Question 1: What is the purpose of 'winglets' on a fixed-wing aircraft?

• Reduce induced drag by limiting wingtip vortices (Correct answer)
• Increase the aircraft's maximum speed
• Provide roll control at low speeds
• Support external fuel tanks

Correct answer: Reduce induced drag by limiting wingtip vortices

Winglets are vertical extensions at the wingtip that reduce the strength of wingtip vortices, decreasing induced drag and improving fuel efficiency.

Question 2: Power is defined as:

• The total work performed
• Force multiplied by mass
• The rate at which work is done (Correct answer)
• Energy stored in a system

Correct answer: The rate at which work is done

Power = Work / Time, measuring how quickly energy is transferred or work is done, expressed in watts (W).

Question 3: Passage: 'Instrument meteorological conditions (IMC) exist when visibility falls below visual flight rules (VFR) minimums. Pilots must transition to instrument flight rules (IFR) procedures and rely on cockpit instruments rather than outside visual references.' According to the passage, what must pilots rely on during IMC?

• Outside visual references from the cockpit windows
• Radio communication with ground controllers exclusively
• Cockpit instruments rather than outside visual references (Correct answer)
• Their previous experience in similar weather conditions

Correct answer: Cockpit instruments rather than outside visual references

The passage states that during IMC, pilots must rely on cockpit instruments rather than outside visual references.

Question 4: An aircraft's attitude indicator shows the aircraft symbol below the artificial horizon line with the wings level. What is the aircraft doing?

• Descending in level wings flight (Correct answer)
• Climbing in level wings flight
• Turning left in level flight
• Hovering in ground effect

Correct answer: Descending in level wings flight

On an attitude indicator, the aircraft symbol below the horizon line indicates a nose-down (descending) attitude. Wings level means no bank (no turn). Therefore: descending, wings level.

Question 5: What is ground effect in helicopter operations?

• Reduced rotor RPM when near the surface
• The tendency of helicopters to drift near the ground
• Turbulence caused by rotor wash hitting the ground
• Increased rotor efficiency when flying within one rotor diameter of the ground (Correct answer)

Correct answer: Increased rotor efficiency when flying within one rotor diameter of the ground

Ground effect occurs when the rotor system is within approximately one rotor diameter of the surface, where interference with ground-reflected airflow reduces induced drag and improves efficiency.

Question 6: A manual states: 'Pre-flight inspection is mandatory before every flight, regardless of the time elapsed since the last inspection or the number of flight hours since the previous pre-flight.' What does 'regardless' signal?

• The rule applies only in certain conditions
• The rule applies universally with no exceptions (Correct answer)
• The rule has exceptions for experienced pilots
• The rule is a guideline, not a requirement

Correct answer: The rule applies universally with no exceptions

'Regardless' indicates that no conditions or circumstances create exceptions to the rule — pre-flight is required every single time.

Question 7: What is 'blade flapping' in a helicopter rotor system?

• The twisting of rotor blades along their span
• The movement of blades forward and backward about a vertical hinge
• The oscillation of rotor blades due to engine surge
• The up-and-down movement of rotor blades about a horizontal hinge (Correct answer)

Correct answer: The up-and-down movement of rotor blades about a horizontal hinge

Blade flapping is the up-and-down movement of rotor blades about a horizontal flapping hinge, which compensates for dissymmetry of lift in forward flight.

Question 8: What is the purpose of the Army Aviation Safety Program?

• To discipline pilots who violate regulations
• To identify and mitigate hazards that could cause accidents or equipment loss, preserving combat power (Correct answer)
• To document all successful flight missions
• To evaluate performance of individual aviators annually

Correct answer: To identify and mitigate hazards that could cause accidents or equipment loss, preserving combat power

The Army Aviation Safety Program aims to prevent accidents through hazard identification, risk mitigation, and safety culture — preserving trained personnel and equipment for combat readiness.

Question 9: Passage: 'Night vision goggles (NVGs) amplify ambient light to improve visibility in low-light conditions. However, NVGs reduce the pilot's field of view and depth perception compared to unaided vision. Pilots must compensate for these limitations through proper training and crew coordination.' What limitation do NVGs impose on pilots according to this passage?

• They interfere with radio communication equipment
• They prevent pilots from reading cockpit instruments
• They reduce field of view and depth perception (Correct answer)
• They require pilots to fly at reduced airspeed

Correct answer: They reduce field of view and depth perception

The passage states that NVGs reduce the pilot's field of view and depth perception compared to unaided vision.

Question 10: Which statement about the difficulty progression within the SIFT Hidden Figures section is most accurate?

• Later items always use larger target shapes to compensate for increasing complexity
• Earlier items tend to use simpler target shapes while later items use more complex backgrounds (Correct answer)
• All items are equally difficult regardless of order
• Difficulty decreases toward the end to reduce test anxiety

Correct answer: Earlier items tend to use simpler target shapes while later items use more complex backgrounds

Like most standardized aptitude tests, the Hidden Figures subtest generally progresses from simpler to more complex items, with increasingly busy backgrounds making the embedded shape harder to find.

Question 11: What is the relationship between wavelength and frequency in a wave?

• Wavelength and frequency are inversely proportional at constant wave speed (Correct answer)
• Longer wavelengths always indicate higher frequencies
• Wavelength and frequency are directly proportional — both increase together
• Wavelength and frequency are independent — they don't affect each other

Correct answer: Wavelength and frequency are inversely proportional at constant wave speed

For a wave at constant speed: v = fλ. If speed is constant and frequency increases, wavelength must decrease proportionally, and vice versa.

Question 12: In US Army aviation, what does 'NOE' stand for?

• Nap-of-the-Earth (Correct answer)
• Navigation Operations Element
• Night Operations Exercise
• Non-standard Operating Environment

Correct answer: Nap-of-the-Earth

NOE stands for Nap-of-the-Earth flying, a low-level flight technique that uses terrain, trees, and buildings as concealment from enemy detection.

Question 13: What is the value of 2³ × 4²?

• 128 (Correct answer)
• 192
• 64
• 48

Correct answer: 128

2³ = 8; 4² = 16; 8 × 16 = 128.

Question 14: How many inches are there in 11 yards 6 feet and 4 inches?

• 472 (Correct answer)
• 476
• 480
• 380

Correct answer: 472

To find the total inches, convert each unit to inches and then sum them. There are 36 inches in 1 yard (3 feet * 12 inches/foot), so 11 yards is 11 * 36 = 396 inches. There are 12 inches in 1 foot, so 6 feet is 6 * 12 = 72 inches. Adding these to the existing 4 inches gives a total of 396 + 72 + 4 = 472 inches.

Question 15: What does 'MOA' stand for in the context of US airspace?

• Military Operations Area (Correct answer)
• Mandatory Obstruction Avoidance zone
• Minimum Obstacle Altitude
• Multi-aircraft Operations Airspace

Correct answer: Military Operations Area

An MOA (Military Operations Area) is a designated airspace block used to separate military training activities from IFR traffic, though VFR pilots may enter at their own risk.

Question 16: An airspeed indicator marked with a yellow arc indicates:

• Caution range — smooth air operations only (Correct answer)
• Flap operating range
• Normal operating range (caution speed)
• Never-exceed speed zone

Correct answer: Caution range — smooth air operations only

The yellow arc on an airspeed indicator represents the caution range where flight should be conducted only in smooth air, between Vno (maximum structural cruising speed) and Vne (never-exceed speed).

Question 17: In a third-class lever, which of the following is located between the other two components?

• The effort (force) (Correct answer)
• The load (resistance)
• The mechanical advantage
• The fulcrum

Correct answer: The effort (force)

The defining characteristic of a third-class lever is that the effort (applied force) is located between the fulcrum (pivot point) and the load (resistance). This arrangement results in a mechanical advantage of less than one but provides gains in speed and range of motion. Examples include tweezers, fishing rods, and the human forearm.

Question 18: What is 'hypoxia' and why is it a concern for aviators?

• Spatial disorientation caused by visual illusions
• Inner ear disorientation caused by rapid altitude changes
• A condition of insufficient oxygen to the brain, causing impaired judgment and unconsciousness at altitude (Correct answer)
• Decompression sickness from rapid descent

Correct answer: A condition of insufficient oxygen to the brain, causing impaired judgment and unconsciousness at altitude

Hypoxia is a deficiency of oxygen reaching body tissues, causing impaired judgment, euphoria, and eventual unconsciousness — particularly dangerous because victims often don't recognize their own impairment.

Question 19: What does 'ceiling' mean in aviation weather?

• Maximum altitude approved for the aircraft type
• The top altitude of controlled airspace
• The height of the lowest broken or overcast cloud layer above ground level (Correct answer)
• The absolute altitude limit set by ATC

Correct answer: The height of the lowest broken or overcast cloud layer above ground level

In aviation weather, ceiling is the height above ground level of the lowest layer of clouds that is reported as broken (5/8 to 7/8 coverage) or overcast (8/8 coverage).

Question 20: An aircraft is heading south at cruise altitude. A long lake runs east-west directly below. How does the lake appear from the cockpit?

• Stretching left and right beneath the aircraft, perpendicular to the nose (Correct answer)
• Barely visible in the upper left corner
• At a 45-degree angle to the right
• Running straight ahead beneath the nose toward the horizon

Correct answer: Stretching left and right beneath the aircraft, perpendicular to the nose

Heading south, an east-west lake is perpendicular to the flight path and appears stretching left and right below the aircraft.

Question 21: What is a 'power check' performed before takeoff in a turbine helicopter?

• A test of the emergency power reserve system before entering instrument conditions
• A check to verify that engine instruments read within normal green arc ranges at idle
• A hover check to verify the aircraft can achieve and maintain a stable hover with available power (Correct answer)
• An administrative verification that the fuel type matches the aircraft specification

Correct answer: A hover check to verify the aircraft can achieve and maintain a stable hover with available power

A power check (hover power check) confirms that the aircraft has sufficient power margin to hover safely at current density altitude, weight, and atmospheric conditions before committing to flight.

Question 22: Passage: 'The SIFT test measures aptitude for flight training, not current flying ability. Candidates with no prior flight experience can excel on the SIFT if they demonstrate strong spatial reasoning, mechanical comprehension, and learning capacity.' What does the passage indicate about prior flight experience?

• It replaces the need for mechanical comprehension skills
• It is required to pass the SIFT test
• It is not necessary to excel on the SIFT (Correct answer)
• It guarantees a high score on spatial reasoning sections

Correct answer: It is not necessary to excel on the SIFT

The passage states that candidates with no prior flight experience can excel on the SIFT, indicating prior experience is not necessary.

Question 23: What does the airspeed indicator measure?

• Ground speed relative to the earth
• GPS-derived velocity
• Engine RPM converted to knots
• The difference between pitot (dynamic) and static pressure (Correct answer)

Correct answer: The difference between pitot (dynamic) and static pressure

The airspeed indicator measures the difference between pitot (ram) air pressure and static air pressure, which corresponds to the aircraft's speed through the air.

Question 24: What is the 'METT-TC' framework used for in Army aviation mission planning?

• A crew qualification verification checklist
• A maintenance checklist for pre-flight inspections
• A risk assessment framework covering Mission, Enemy, Terrain/weather, Troops, Time, and Civil considerations (Correct answer)
• A navigation system using multiple waypoints

Correct answer: A risk assessment framework covering Mission, Enemy, Terrain/weather, Troops, Time, and Civil considerations

METT-TC is the Army's standard mission analysis framework: Mission, Enemy, Terrain/weather, Troops available, Time available, Civil considerations — used to plan and assess military operations.

Question 25: What is the correct squawk code a pilot should set when declaring an emergency?

• 7700 (Correct answer)
• 1200
• 7600
• 7500

Correct answer: 7700

Squawk 7700 is the universal emergency code that alerts all ATC radar facilities that the aircraft is in distress and requires immediate assistance.

Question 26: From outside, an aircraft is seen flying level over the ocean heading toward shore, with the shoreline running left to right in the distance. From the cockpit, the shoreline appears:

• Angled from lower-left to upper-right
• Running away from the pilot straight ahead
• Running left to right across the view near the horizon (Correct answer)
• Behind the aircraft

Correct answer: Running left to right across the view near the horizon

The shoreline runs perpendicular to the approach heading, so it appears across the view left to right near the horizon.

Question 27: What does the 'E6B flight computer' help pilots calculate?

• Only fuel burn rates
• IFR approach procedures and descent rates only
• Wind correction angle, groundspeed, fuel consumption, true airspeed, and density altitude (Correct answer)
• Radio frequencies and NAVAID identifiers

Correct answer: Wind correction angle, groundspeed, fuel consumption, true airspeed, and density altitude

The E6B flight computer (circular slide rule) allows pilots to calculate wind correction angles, groundspeed, true airspeed, time/distance/fuel, and density altitude.

Question 28: Which pair of figures demonstrates a rotation rather than a reflection?

• A 'q' and a 'b'
• A 'p' and a 'b' (Correct answer)
• A 'd' and a 'p'
• A 'b' and a 'd'

Correct answer: A 'p' and a 'b'

'p' rotated 180° becomes 'b', making it a rotation; the others involve reflections across an axis.

Question 29: Which feature of a complex drawing makes finding the embedded shape most difficult?

• The use of curved lines
• Large empty white spaces
• Shaded regions in the background
• Overlapping lines that share segments with the embedded figure's edges (Correct answer)

Correct answer: Overlapping lines that share segments with the embedded figure's edges

When the complex drawing's lines overlap and share edges with the target shape, it becomes hard to distinguish the shape's boundaries from unrelated lines.

Question 30: Danny, a young man from the Northern Hemisphere, is positioned on a scale. Danny is 20 kg heavy. In Newtons, the scale readout is shown. What is Danny's readout?

• 198
• 194
• 190
• 196 (Correct answer)

Correct answer: 196

Weight is a force, measured in Newtons, and is calculated by multiplying an object's mass by the acceleration due to gravity (g). The acceleration due to gravity on Earth is approximately 9.8 meters per second squared (m/s²). Therefore, Danny's weight is 20 kg * 9.8 m/s² = 196 Newtons. The scale readout would display this force.

Question 31: What is the primary hazard of structural icing on a helicopter's main rotor blades?

• Increased rotor RPM beyond limits
• Vibration that locks the anti-torque pedals
• Disruption of the rotor's airfoil shape, reducing lift and increasing drag (Correct answer)
• Magnetic interference with navigation instruments

Correct answer: Disruption of the rotor's airfoil shape, reducing lift and increasing drag

Ice accumulation distorts the rotor blade's airfoil profile, degrading aerodynamic efficiency and potentially causing asymmetric lift and blade imbalance.

Question 32: Which type of lever has the fulcrum located between the effort and the load?

• Second-class lever
• Third-class lever
• Compound lever
• First-class lever (Correct answer)

Correct answer: First-class lever

In a first-class lever, the fulcrum is positioned between the effort force and the load.

Question 33: A hydraulic jack multiplies force by having a small piston with area 2 cm² and a large piston with area 20 cm². What force does the large piston exert if 100 N is applied to the small piston?

• 100 N
• 1000 N (Correct answer)
• 10 N
• 200 N

Correct answer: 1000 N

Pascal's principle: F_large / A_large = F_small / A_small, so F_large = 100 N × (20/2) = 1000 N.

Question 34: What Army publication governs aviation accident prevention and risk management for Army helicopter operations?

• FM 3-04.300 — Airfield and Flight Operations Procedures
• AR 95-1 — Flight Regulations (Correct answer)
• TC 3-04.11 — Commander's Aircrew Training Program
• ATP 3-04.7 — Army Aviation Maintenance

Correct answer: AR 95-1 — Flight Regulations

AR 95-1 (Army Regulation 95-1) is the primary regulatory document governing Army aviation flight regulations, including accident prevention, risk management, and operational requirements.

Question 35: How many simple lettered figures (A–E) are typically presented as answer choices in the SIFT Hidden Figures section?

• Five (Correct answer)
• Six
• Four
• Three

Correct answer: Five

Each question presents five simple geometric figures labeled A through E, and the candidate must identify which one is embedded in the complex drawing.

Question 36: What is 'adverse yaw' in a fixed-wing aircraft?

• Yaw induced by engine torque at full power
• The tendency of the aircraft to yaw toward the lowered (rising) aileron during a roll input (Correct answer)
• Yaw caused by asymmetric thrust in multi-engine aircraft
• The nose-down pitch that occurs when flaps are deployed

Correct answer: The tendency of the aircraft to yaw toward the lowered (rising) aileron during a roll input

Adverse yaw occurs because the down-going aileron (on the rising wing) generates more drag than the up-going aileron, pulling the nose toward the rising wing instead of the direction of roll.

Question 37: A figure shows a 2×2 grid. Top-left: large X; top-right: small X; bottom-left: large O; bottom-right: ?

• Large O
• Large X
• Small X
• Small O (Correct answer)

Correct answer: Small O

The pattern pairs large (left) with small (right) in each row. Large X → small X; large O → small O.

Question 38: What is 'vortex ring state' (settling with power) in helicopters?

• A condition where the rotor vortex improves lift efficiency in a hover
• A situation where the tail rotor enters a vortex from the main rotor
• A dangerous condition where the helicopter descends into its own rotor vortex, losing lift despite high power (Correct answer)
• A condition caused by flying through the wake of another aircraft

Correct answer: A dangerous condition where the helicopter descends into its own rotor vortex, losing lift despite high power

Vortex ring state occurs when the helicopter descends vertically at low airspeed with high power, causing the rotor to descend into its own tip vortex ring, severely reducing lift.

Question 39: During a turn to the north in the Northern Hemisphere, a magnetic compass will typically:

• Remain fixed at the original heading
• Overshoot — indicate past north before settling (Correct answer)
• Undershoot — stop short of north before settling
• Read accurately throughout the turn

Correct answer: Overshoot — indicate past north before settling

Due to compass dip and northerly turning error in the Northern Hemisphere, the compass overshoots when rolling out of a turn to north, requiring the pilot to roll out early.

Question 40: What is the unit of power in the SI system?

• Watt (Correct answer)
• Newton
• Joule
• Pascal

Correct answer: Watt

The watt (W) is the SI unit of power, equal to one joule per second (J/s). Power measures the rate at which work is done or energy is transferred.

Question 41: A lever has an effort arm of 3 m and a load arm of 0.5 m. What is its mechanical advantage?

• 1.5
• 6 (Correct answer)
• 0.17
• 3.5

Correct answer: 6

MA = effort arm / load arm = 3 m / 0.5 m = 6, meaning the lever multiplies the effort force by 6.

Question 42: In a series of five figures, four consist of a square with a small, filled circle in the top-left corner. Which of the following figures would be the 'odd one out'?

• A square with a filled circle in the top-right corner.
• A square with an unfilled circle in the top-left corner. (Correct answer)
• A slightly larger square with a filled circle in the top-left corner.
• A rotated square (diamond shape) with a filled circle in the top-left corner relative to its orientation.

Correct answer: A square with an unfilled circle in the top-left corner.

This question assesses attention to detail. The defining characteristic of the group is a 'filled' circle in a specific corner. A figure with an 'unfilled' circle represents a change in the core attribute of a component, whereas changes in position, size, or overall orientation are less fundamental deviations in this context.

Question 43: From a cockpit view, mountains are visible on the left side and flat terrain on the right. The aircraft is in level flight heading north. Where are the mountains relative to the aircraft's track?

• Directly behind
• To the east of the flight path
• Directly ahead
• To the west of the flight path (Correct answer)

Correct answer: To the west of the flight path

Heading north with mountains on the left means the mountains are to the west (left when facing north).

Question 44: A wheel and axle has a wheel radius of 30 cm and an axle radius of 5 cm. What is its mechanical advantage?

• 150
• 0.17
• 6 (Correct answer)
• 25

Correct answer: 6

MA of a wheel and axle = wheel radius / axle radius = 30 / 5 = 6.

Question 45: What type of stress does a bolt in a bolted joint primarily experience when the joint resists forces that try to slide the two halves sideways?

• Tensile stress
• Compressive stress
• Bending stress
• Shear stress (Correct answer)

Correct answer: Shear stress

When two joined surfaces try to slide sideways past each other, the bolt resists this by being sheared (cut) along its cross-section — this is shear stress.

Question 46: You are presented with a complex geometric pattern containing many overlapping lines and shapes. Which of the following is the most effective initial strategy for locating a simple target shape (e.g., a small triangle) embedded within the pattern?

• Trace every line in the complex pattern from end to end.
• Look for the overall color of the target shape within the pattern.
• Blur your vision slightly to see if the target shape 'pops out'.
• Focus on finding vertices or specific angles of the target shape first. (Correct answer)

Correct answer: Focus on finding vertices or specific angles of the target shape first.

The Hidden Figures subtest measures your ability to find simple geometric shapes within complex drawings. The most efficient method is to scan the complex figure for key features of the simple shape, such as its corners (vertices) or the angles of its lines, rather than trying to see the whole shape at once or tracing every line.

Question 47: What does a 'circuit breaker' do in an electrical system?

• Increases voltage when demand spikes
• Converts AC power to DC power
• Automatically interrupts current flow when it exceeds a safe limit (Correct answer)
• Stores excess electrical charge

Correct answer: Automatically interrupts current flow when it exceeds a safe limit

A circuit breaker is an automatic switch that trips (opens the circuit) when current exceeds a safe level, preventing wires and components from overheating and causing fires.

Question 48: In a simple drawings test item, the target figure is an L-shape. Four answer choices show the same L-shape at different orientations. How do you identify the correct match?

• Choose the largest answer figure
• Select the answer that is a mirror image
• Mentally rotate the target to match each answer choice (Correct answer)
• Pick the one closest to vertical

Correct answer: Mentally rotate the target to match each answer choice

You mentally rotate the target figure and compare it to each answer choice to find the identical orientation.

Question 49: Read the following passage and answer the question below. "Bernoulli's principle is fundamental to understanding lift. It states that an increase in the speed of a fluid is accompanied by a decrease in its pressure. An airfoil, such as a wing or rotor blade, is designed with a curved upper surface and a flatter lower surface. As the airfoil moves through the air, the air that travels over the curved top surface must travel a longer distance than the air traveling along the bottom. Consequently, the air on top moves faster, resulting in lower pressure above the airfoil compared to the higher pressure below it. This pressure differential creates a net upward force, which is known as lift." Based on the passage, an airfoil generates lift because:

• The air pressure above the wing is greater than the pressure below it.
• The air molecules push down on the top of the wing.
• The airfoil's forward motion displaces an equal weight of air.
• The air pressure below the wing is greater than the pressure above it. (Correct answer)

Correct answer: The air pressure below the wing is greater than the pressure above it.

The passage explains that faster-moving air over the top surface creates lower pressure, while slower-moving air underneath creates higher pressure. It explicitly states, 'This pressure differential creates a net upward force, which is known as lift.' Therefore, the higher pressure is below the wing.

Question 50: The artificial horizon in a cockpit shows the sky bar tilted so the right end is up and the left end is down, with the miniature aircraft symbol above the horizon bar. What is true?

• The aircraft is in a right bank, descending
• The aircraft is in a left bank, descending
• The aircraft is in a left bank, climbing
• The aircraft is in a right bank, climbing (Correct answer)

Correct answer: The aircraft is in a right bank, climbing

The right end of the horizon bar up indicates a right bank, and the miniature aircraft above the horizon bar indicates a climb.

Question 51: What is the difference between hovering in ground effect (IGE) and out of ground effect (OGE)?

• IGE requires more power because rotor vortices are trapped under the helicopter
• There is no power difference between IGE and OGE at the same weight
• IGE requires more power because the helicopter is closer to obstacles
• OGE requires more power because the rotor cannot benefit from ground interference with downwash (Correct answer)

Correct answer: OGE requires more power because the rotor cannot benefit from ground interference with downwash

OGE hovering requires significantly more power because the rotor operates without the efficiency benefit of ground effect, and density altitude OGE limits are lower than IGE limits.

Question 52: A helicopter is seen from the side, flying right to left with its nose pointed at the ground at a steep angle. What is it doing?

• Hovering in a crosswind
• Making a steep approach or dive (Correct answer)
• Climbing at maximum angle
• Flying level in strong headwind

Correct answer: Making a steep approach or dive

Nose pointed at the ground at a steep angle while moving forward indicates either a steep approach to land or a dive, not level flight or a climb.

Question 53: A passage reads: 'Crew resource management (CRM) emphasizes that all crew members, regardless of rank, have a responsibility to speak up when they identify a safety concern. A culture where junior crew members feel unable to challenge a senior pilot's decision has historically contributed to preventable accidents.' What does CRM require of junior crew members according to this passage?

• They have a responsibility to speak up when they identify safety concerns (Correct answer)
• They should document concerns in writing after the flight
• They must obtain permission from senior pilots before changing any procedures
• They must defer to senior pilots on all safety decisions

Correct answer: They have a responsibility to speak up when they identify safety concerns

The passage states that CRM emphasizes all crew members, regardless of rank, have a responsibility to speak up when they identify a safety concern.

Question 54: What weather phenomenon is most dangerous for rotary-wing aircraft?

• Moderate winds
• Clear skies
• Light rain
• Icing conditions, which can change rotor blade aerodynamics and add weight (Correct answer)

Correct answer: Icing conditions, which can change rotor blade aerodynamics and add weight

Ice accumulation on rotor blades changes their aerodynamic shape, reduces lift, adds weight, and can cause dangerous vibrations, making icing extremely hazardous for helicopters.

Question 55: What does 'IFR' stand for and when is it required?

• Instrument Flight Rules; required when weather conditions fall below VFR minimums (Correct answer)
• International Flight Rules; required for overseas flights
• Integrated Flight Regulations; required above 18,000 feet
• Instrument Flight Rules; required when flying at night

Correct answer: Instrument Flight Rules; required when weather conditions fall below VFR minimums

IFR (Instrument Flight Rules) applies when weather conditions drop below VFR minimums, requiring pilots to rely on instruments and ATC guidance.

Question 56: The 'anhedral' wing configuration (wings angled downward from root to tip) is primarily used to:

• Improve high-speed performance by reducing lift
• Increase ground clearance for engines
• Reduce lateral (roll) stability for improved maneuverability (Correct answer)
• Improve lateral stability

Correct answer: Reduce lateral (roll) stability for improved maneuverability

Anhedral reduces the dihedral effect, lowering roll stability and making the aircraft more responsive in roll, often used on highly maneuverable or swept-wing aircraft.

Question 57: What is the US Army's primary multi-mission helicopter, used for utility transport and assault operations?

• CH-47 Chinook
• UH-60 Black Hawk (Correct answer)
• OH-58 Kiowa
• AH-64 Apache

Correct answer: UH-60 Black Hawk

The UH-60 Black Hawk is the Army's primary utility helicopter, used for troop transport, medical evacuation, and various other missions.

Question 58: What is the purpose of a 'PIREP' (Pilot Report)?

• A post-flight incident report filed with the NTSB
• A pre-flight inspection checklist required by FAA
• A clearance request for entering Class B airspace
• An in-flight weather observation shared by pilots with ATC or Flight Service (Correct answer)

Correct answer: An in-flight weather observation shared by pilots with ATC or Flight Service

A PIREP is a real-time weather observation reported by a pilot in flight and disseminated by ATC or Flight Service to help other pilots avoid hazards.

Question 59: What is 'autorotation' in helicopter emergency procedures?

• An automatic stabilization system that prevents rotor overspeed
• A flight condition where the rotor is driven by airflow rather than the engine, allowing a controlled descent (Correct answer)
• An emergency engine restart procedure using rotor momentum
• A procedure where the copilot takes over flight controls automatically

Correct answer: A flight condition where the rotor is driven by airflow rather than the engine, allowing a controlled descent

Autorotation is a flight condition where upward airflow through the rotor system drives the rotor blades, enabling the helicopter to descend in a controlled manner without engine power.

Question 60: Which of the following does not refer to a typical helicopter control?

• Cyclic
• Throttle
• Dual (Correct answer)
• Collective

Correct answer: Dual

The primary flight controls of a helicopter are the collective, which changes the pitch of all main rotor blades simultaneously to control altitude; the cyclic, which changes the pitch of individual blades cyclically to control direction; and the anti-torque pedals (or tail rotor control), which control yaw. 'Dual' is not a standard flight control component.

Question 61: What does the term 'semi-monocoque' refer to in aircraft construction?

• A landing gear type with semi-rigid shock absorbers
• A fuselage structure using only an outer skin with no internal framework
• A wing design using composite materials only
• A fuselage structure where the skin shares stress loads with internal framework (Correct answer)

Correct answer: A fuselage structure where the skin shares stress loads with internal framework

Semi-monocoque construction uses a combination of an outer skin and internal structural members (frames, bulkheads, stringers) that share the stress loads.

Question 62: What condition is known as 'retreating blade stall'?

• Loss of rotor RPM below the minimum safe threshold
• Stall caused by pulling the cyclic too far aft
• Engine failure causing all blades to lose lift
• Stall of the retreating blade when its angle of attack exceeds critical limits at high forward speeds (Correct answer)

Correct answer: Stall of the retreating blade when its angle of attack exceeds critical limits at high forward speeds

Retreating blade stall occurs at high forward speeds when the retreating blade's slowed relative airspeed requires excessive pitch to maintain lift, exceeding its critical angle of attack.

Question 63: In a series electrical circuit with two resistors of 4Ω and 6Ω connected to a 20V battery, what is the total current?

• 5 A
• 0.5 A
• 10 A
• 2 A (Correct answer)

Correct answer: 2 A

In a series circuit, total resistance = R₁ + R₂ = 4 + 6 = 10Ω. Current I = V/R = 20/10 = 2 A.

Question 64: Read: 'CRM (Crew Resource Management) failures are implicated in the majority of multi-crew aircraft accidents. Despite high individual skill levels, crews sometimes fail to communicate critical information, challenge incorrect decisions, or divide cockpit tasks effectively.' What is the passage's implication?

• CRM training is too complex for most pilots
• Individual pilot skill is sufficient to prevent accidents
• Multi-crew aircraft are inherently more dangerous than single-pilot aircraft
• CRM failures can occur even among skilled pilots, making communication and task management critical for safety (Correct answer)

Correct answer: CRM failures can occur even among skilled pilots, making communication and task management critical for safety

The passage implies that skill alone is insufficient — CRM failures happen even with skilled individuals, making crew communication and coordination essential safety factors.

Question 65: What is 'settling with power' (vortex ring state) in helicopter flight?

• An overpowered climb that causes the engine to overheat
• A rapid deceleration maneuver used to avoid obstacles
• A condition where the helicopter descends into its own downwash, causing a loss of lift that more power cannot overcome (Correct answer)
• Engine power settling due to high density altitude reducing performance

Correct answer: A condition where the helicopter descends into its own downwash, causing a loss of lift that more power cannot overcome

Vortex ring state (settling with power) occurs when a helicopter descends into its own rotor downwash, disrupting lift; adding power worsens the condition until the aircraft exits the vortex.

Question 66: What is the role of the Army's UH-72 Lakota helicopter?

• Heavy-lift cargo helicopter
• Light utility and training helicopter (Correct answer)
• Armed reconnaissance platform
• Primary attack helicopter

Correct answer: Light utility and training helicopter

The UH-72 Lakota serves as the Army's primary light utility helicopter for training, medical evacuation support, and domestic homeland security missions.

Question 67: An aircraft is in straight and level flight at a constant velocity. Which of the following statements about the four fundamental forces acting on it is true?

• Lift equals drag, and thrust equals weight.
• Thrust is greater than drag.
• Thrust equals drag, and lift equals weight. (Correct answer)
• Lift is greater than weight.

Correct answer: Thrust equals drag, and lift equals weight.

According to Newton's First Law of Motion, an object in motion will stay in motion with the same speed and in the same direction unless acted upon by an unbalanced force. For an aircraft to maintain a constant velocity (unaccelerated, straight, and level flight), all forces must be in equilibrium. This means the forward force (thrust) must be equal to the rearward force (drag), and the upward force (lift) must be equal to the downward force (weight).

Question 68: A 3 kg ball is traveling at 6 m/s. What is its kinetic energy?

• 54 J (Correct answer)
• 108 J
• 18 J
• 9 J

Correct answer: 54 J

KE = ½mv² = ½ × 3 × 6² = ½ × 3 × 36 = 54 J.

Question 69: Which flight instrument uses a gyroscope to indicate the aircraft's pitch and bank attitude relative to the horizon?

• Airspeed Indicator
• Vertical Speed Indicator
• Attitude Indicator (Correct answer)
• Altimeter

Correct answer: Attitude Indicator

The attitude indicator (also called an artificial horizon) uses a gyroscope to display the aircraft's pitch and bank relative to the actual horizon.

Question 70: A simple closed figure has 0 lines of symmetry and rotational symmetry of order 1 only. This describes a:

• Square
• Circle
• Equilateral triangle
• Scalene triangle (Correct answer)

Correct answer: Scalene triangle

A scalene triangle has no equal sides, no lines of symmetry, and only trivial (360°) rotational symmetry.

Question 71: What happens to required tail rotor thrust as altitude increases?

• It increases only when hovering out of ground effect
• It remains constant regardless of altitude
• It decreases because torque decreases at altitude
• It increases because the tail rotor must work harder in thinner air to produce the same anti-torque force (Correct answer)

Correct answer: It increases because the tail rotor must work harder in thinner air to produce the same anti-torque force

At higher altitudes, thinner air reduces tail rotor thrust efficiency, requiring higher pitch angles or limiting the anti-torque authority available to the pilot.

Question 72: An object is accelerating at 3 m/s². If the net force on it is 15 N, what is its mass?

• 18 kg
• 5 kg (Correct answer)
• 0.2 kg
• 45 kg

Correct answer: 5 kg

Using Newton's Second Law: F = ma, so m = F/a = 15/3 = 5 kg.

Question 73: In a fully articulated rotor system, the 'lead-lag hinge' is designed to:

• Change the pitch of the blade
• Lock the rotor during engine startup
• Allow blades to flap up and down
• Allow blades to move fore and aft in the plane of rotation to absorb Coriolis forces (Correct answer)

Correct answer: Allow blades to move fore and aft in the plane of rotation to absorb Coriolis forces

The lead-lag (drag) hinge allows rotor blades to move slightly fore and aft in their plane of rotation, absorbing the Coriolis effect that occurs as blades flap.

Question 74: Which of the following components translates the pilot's cyclic and collective control inputs from the non-rotating fuselage to the rotating main rotor blades?

• Mast
• Transmission
• Rotor hub
• Swashplate (Correct answer)

Correct answer: Swashplate

The swashplate is a critical mechanical assembly that consists of a stationary part and a rotating part. It tilts and moves vertically in response to pilot inputs, transferring these commands to the rotating rotor blades via pitch links, thereby controlling the helicopter's flight.

Question 75: An aircraft is shown from the front, in a right bank, with its nose pitched down slightly. What is the aircraft doing?

• Level flight turning right
• Climbing and turning right
• Descending and turning right (Correct answer)
• Climbing and turning left

Correct answer: Descending and turning right

Right bank = right turn. Nose pitched down = descending. Combined: the aircraft is in a descending right turn.

Question 76: A movable pulley provides a mechanical advantage of 2 because:

• Two rope segments support the load (Correct answer)
• The load is twice the effort
• The rope is twice as long as the height
• The pulley doubles gravity

Correct answer: Two rope segments support the load

A movable pulley has two rope segments pulling upward on the load, so each segment supports half the load, giving MA = 2.

Question 77: A screw is a simple machine that is functionally a modification of which other simple machine?

• A lever
• A pulley
• A wheel and axle
• An inclined plane (Correct answer)

Correct answer: An inclined plane

A screw is best described as an inclined plane wrapped helically around a central axis or cylinder. The threads of the screw act as the sloped surface, converting rotational force (torque) into a linear force along the axis of the screw.

Question 78: During a pre-flight inspection of a UH-60 Black Hawk, a crew chief notices that the main rotor blades can flap and lead/lag. This design feature is essential to compensate for which aerodynamic principle in forward flight?

• Translational Thrust
• Ground Effect
• Dissymmetry of Lift (Correct answer)
• Effective Translational Lift

Correct answer: Dissymmetry of Lift

Blade flapping is a primary method of compensating for dissymmetry of lift. The advancing blade, which produces more lift, flaps upward, decreasing its angle of attack. The retreating blade flaps downward, increasing its angle of attack. This action equalizes lift across the rotor disc.

Question 79: What is translational lift in helicopter flight?

• Lift generated by forward flight that improves rotor efficiency (Correct answer)
• The vertical component of total rotor thrust
• Lift gained by increasing collective pitch
• Lift created by tilting the rotor disc forward

Correct answer: Lift generated by forward flight that improves rotor efficiency

Translational lift occurs when forward airspeed moves the rotor out of its own downwash, allowing each blade to encounter undisturbed air and generate more lift.

Question 80: An inclined plane has a height of 2 m and a length of 8 m. What is its mechanical advantage?

• 0.25
• 16
• 4 (Correct answer)
• 6

Correct answer: 4

MA of an inclined plane = length / height = 8 m / 2 m = 4, meaning it takes one-fourth the force to push something up the ramp versus lifting it straight up.

Question 81: When a ball is thrown upward, its kinetic energy at the peak of its trajectory is:

• Equal to its initial kinetic energy
• Zero (Correct answer)
• Equal to its weight
• Maximum

Correct answer: Zero

At the peak, the ball momentarily stops (velocity = 0), so kinetic energy (½mv²) equals zero; all energy has converted to potential energy.

Question 82: An observer on the ground sees a helicopter flying overhead from south to north. The helicopter is banked, with the east side lower. What turn is the helicopter making?

• Turning south (180° turn)
• Turning west (left bank from pilot's perspective)
• Turning east (right bank from pilot's perspective) (Correct answer)
• Straight flight heading north

Correct answer: Turning east (right bank from pilot's perspective)

Heading north, the pilot's right side is east. East side lower = right wing lower = right bank = right turn (turning east).

Question 83: What is 40% of 250?

• 150
• 100 (Correct answer)
• 25
• 10

Correct answer: 100

40% of 250 = 0.40 × 250 = 100.

Question 84: Which atmospheric layer contains virtually all weather phenomena that affect Army aviation operations?

• Troposphere (Correct answer)
• Mesosphere
• Stratosphere
• Thermosphere

Correct answer: Troposphere

The troposphere, extending from the surface to roughly 36,000 feet, contains almost all of the water vapor and weather that pilots encounter.

Question 85: A hydraulic system has a small piston with area 2 in² and a large piston with area 20 in². What force does the large piston exert when 10 lbs is applied to the small piston?

• 10 lb
• 100 lb (Correct answer)
• 1 lb
• 200 lb

Correct answer: 100 lb

By Pascal's Principle, pressure is transmitted equally. P = F/A = 10/2 = 5 psi. Force on large piston = P × A = 5 × 20 = 100 lb.

Question 86: In a tandem-rotor helicopter (e.g., CH-47 Chinook), how is torque typically counteracted?

• By a conventional tail rotor
• By vectored exhaust nozzles
• By differential collective pitch on a single rotor
• By the two rotors spinning in opposite directions, canceling each other's torque (Correct answer)

Correct answer: By the two rotors spinning in opposite directions, canceling each other's torque

Tandem-rotor helicopters use two counter-rotating rotors whose torques cancel each other out, eliminating the need for a tail rotor.

Question 87: A cockpit view shows the nose well below the horizon with the wings level. Simultaneously, the airspeed is increasing. What maneuver is being performed?

• Wings-level descent (Correct answer)
• Left-bank climb
• Wings-level climb
• Right-bank descent

Correct answer: Wings-level descent

A nose-below-horizon attitude with level wings and increasing airspeed indicates a straight-ahead descent.

Question 88: Passage: 'An author's tone reflects their attitude toward the subject matter. Tone is conveyed through word choice, sentence structure, and the selection of details. A passage describing a battlefield as "a scene of heroic sacrifice" versus "a senseless slaughter" reveals starkly different authorial tones.' What best illustrates how tone is revealed in the example given?

• Through the use of punctuation at the end of each sentence
• Through the number of factual details included in each version
• Through the selection of contrasting descriptive phrases for the same event (Correct answer)
• Through the length of the sentences used in each description

Correct answer: Through the selection of contrasting descriptive phrases for the same event

The passage uses two contrasting phrases for the same battlefield event to show how word choice reveals different authorial tones.

Question 89: A figure shows a right triangle with the right angle at the bottom-left. Which rotation places the right angle at the top-right?

• 180°
• 90° counter-clockwise
• 90° clockwise (Correct answer)
• 270° clockwise

Correct answer: 90° clockwise

Rotating 90° clockwise moves the bottom-left corner to the top-right position.

Question 90: Passage: 'The phonetic alphabet used in military and aviation communication assigns a unique word to each letter of the alphabet. This standardized system prevents miscommunication caused by letters that sound similar, such as B and D or M and N, especially over noisy radio channels.' Why was the phonetic alphabet developed?

• To speed up communication between pilots and controllers
• To create a secret code that enemies cannot decipher
• To replace written communication in cockpit environments
• To prevent miscommunication from letters that sound similar over radio (Correct answer)

Correct answer: To prevent miscommunication from letters that sound similar over radio

The passage states the phonetic alphabet prevents miscommunication caused by letters that sound similar, especially over noisy radio channels.

Question 91: Why is it dangerous to reduce collective during a high-speed autorotation just before touchdown?

• It causes the rotor to overspeed and risk blade separation
• It prevents flare effectiveness and causes a hard landing
• It causes the tail rotor to produce excessive thrust
• Reducing collective too early depletes rotor energy needed for the flare and cushioned touchdown (Correct answer)

Correct answer: Reducing collective too early depletes rotor energy needed for the flare and cushioned touchdown

Rotor RPM stores inertial energy; reducing collective prematurely in autorotation bleeds this energy, leaving insufficient rotor kinetic energy for the flare and cushioned landing.

Question 92: What does the term 'LZ' mean in Army aviation emergency contexts?

• Logistics Zone — a supply area near the forward line of troops
• Low Zone — a designated low-altitude flight corridor
• Landing Zone — a pre-selected area for helicopter landing or extraction (Correct answer)
• Loss Zone — an area with known navigation signal interference

Correct answer: Landing Zone — a pre-selected area for helicopter landing or extraction

LZ stands for Landing Zone, a specific area designated for helicopter landing, often selected based on obstacle clearance, approach/departure paths, and surface conditions.

Question 93: If a helicopter must climb 4,500 feet over a horizontal distance of 9 miles, what is the climb gradient in feet per mile?

• 200 feet/mile
• 2,000 feet/mile
• 900 feet/mile
• 500 feet/mile (Correct answer)

Correct answer: 500 feet/mile

Climb gradient = altitude change / horizontal distance = 4,500 ft / 9 miles = 500 ft/mile.

Question 94: In Army aviation, what is the significance of 'Class A mishap' classification?

• A mishap causing only minor equipment damage under $2,000
• A training exercise mishap with no injuries
• The most serious mishap category, involving fatalities, permanent disability, or property damage exceeding $2.5 million (Correct answer)
• A mishap occurring only during peacetime operations

Correct answer: The most serious mishap category, involving fatalities, permanent disability, or property damage exceeding $2.5 million

Class A mishaps are the most severe category, involving a fatality, permanent total disability, or property damage of $2.5 million or more — triggering mandatory formal investigation.

Question 95: Which type of turbulence is caused by mechanical disruption of airflow as wind passes over irregular terrain such as hills or ridgelines?

• Clear-air turbulence (CAT)
• Thermal turbulence
• Wake turbulence
• Mechanical turbulence (Correct answer)

Correct answer: Mechanical turbulence

Mechanical turbulence results from the physical disruption of wind flow by surface obstacles like hills, buildings, or trees, creating eddies and unpredictable air movements.

Question 96: Which material has the highest thermal conductivity (transmits heat best)?

• Copper (Correct answer)
• Glass
• Wood
• Rubber

Correct answer: Copper

Copper is an excellent thermal conductor, which is why it is used in heat sinks, cooking pans, and electrical wiring. Wood, glass, and rubber are much poorer conductors (good insulators).

Question 97: A pilot flying west at low altitude sees a city directly ahead and a mountain range to the left. The mountain range runs roughly north-south. What direction does the range run relative to the pilot's heading?

• At a 45-degree angle ahead
• Diagonally behind the aircraft
• Perpendicular to the flight path (Correct answer)
• Parallel to the flight path

Correct answer: Perpendicular to the flight path

A north-south mountain range is perpendicular to a westbound flight path.

Question 98: What does the 'collective' control on a helicopter primarily regulate?

• Engine fuel flow only
• Direction of flight
• Overall pitch of all rotor blades simultaneously (Correct answer)
• Tail rotor thrust

Correct answer: Overall pitch of all rotor blades simultaneously

The collective changes the pitch angle of all main rotor blades simultaneously, controlling the total lift produced and vertical movement.

Question 99: Which cognitive ability is most directly measured by the SIFT Hidden Figures subtest?

• Short-term auditory memory
• Numerical reasoning
• Verbal comprehension
• Field independence and visual discrimination (Correct answer)

Correct answer: Field independence and visual discrimination

Hidden Figures measures field independence — the ability to isolate a relevant visual element from a distracting, complex background.

Question 100: The entire tail assembly of an aircraft, including the vertical and horizontal stabilizers, rudder, and elevators, is collectively known as the:

• Empennage (Correct answer)
• Fuselage
• Aileron assembly
• Cockpit section

Correct answer: Empennage

The empennage is the correct term for the entire tail assembly of an aircraft. Its purpose is to provide stability and control. The fuselage is the main body of the aircraft.

Question 101: A pulley system has a mechanical advantage of 4. If a 200 N load is lifted, how much effort force is required (ignoring friction)?

• 100 N
• 50 N (Correct answer)
• 200 N
• 800 N

Correct answer: 50 N

Mechanical advantage = Load / Effort, so Effort = 200 N / 4 = 50 N.

Question 102: In a matrix of 3×3 shapes where each row contains a circle, triangle, and square (in some order), and the first row is circle-triangle-square, second row is triangle-square-circle, what completes the third row starting with square?

• Circle-square-triangle
• Square-circle-triangle
• Triangle-circle-square
• Square-triangle-circle (Correct answer)

Correct answer: Square-triangle-circle

Each row is a rotation of the set. Row 1: C-T-S; Row 2: T-S-C (shifted left once); Row 3: S-C-T (shifted left again), so it's square-circle-triangle.

Question 103: A passage states: 'An author's purpose may be to inform, to persuade, or to entertain. Informative passages present facts objectively, persuasive passages advocate for a particular viewpoint, and entertaining passages prioritize engaging the reader. A single passage may blend more than one purpose.' What does the final sentence of this passage add?

• It clarifies that these purposes are not always mutually exclusive in a single passage (Correct answer)
• It contradicts the definitions provided in the earlier sentences
• It acknowledges that passages are often written for a single pure purpose
• It identifies which author purpose is most common in military training materials

Correct answer: It clarifies that these purposes are not always mutually exclusive in a single passage

The final sentence clarifies that a single passage may blend more than one purpose, meaning these categories are not always mutually exclusive.

Question 104: Read: 'A passage's organizational structure can affect how readers interpret its content. Common structures include cause-and-effect, compare-and-contrast, problem-solution, and chronological order. Identifying the structure helps readers anticipate how information will be presented and locate specific details efficiently.' Why is identifying a passage's organizational structure useful?

• It helps readers identify which sentences can be skipped safely
• It allows readers to determine the author's educational background
• It reveals hidden meanings embedded in the passage's vocabulary
• It helps readers anticipate information presentation and locate details efficiently (Correct answer)

Correct answer: It helps readers anticipate information presentation and locate details efficiently

The passage states that identifying organizational structure helps readers anticipate how information will be presented and locate specific details efficiently.

Question 105: A pilot looks out of the cockpit and sees the horizon line tilted down to the right and positioned in the upper half of their view. Which of the following correctly describes the aircraft's attitude?

• Climbing and banking to the right.
• Climbing and banking to the left.
• Descending and banking to the left. (Correct answer)
• Descending and banking to the right.

Correct answer: Descending and banking to the left.

When the horizon appears in the upper half of the view, it means the aircraft's nose is pointed below it, indicating a descent. A horizon line tilted down to the right means the left wing is down, which corresponds to a left bank. Therefore, the aircraft is descending and banking to the left.

Question 106: What does 'TOLD card' stand for in Army aviation pre-flight planning?

• Target Orbit and Landing Diagram card
• Terrain Obstacle and Low-Level Data card
• Tactical Operations and Logistics Data card
• Takeoff and Landing Data card, used to calculate performance figures for a given flight profile (Correct answer)

Correct answer: Takeoff and Landing Data card, used to calculate performance figures for a given flight profile

A TOLD card contains Takeoff and Landing Data, including calculations for hover ceiling, rate of climb, and landing distance based on current density altitude, weight, and conditions.

Question 107: Which figure has rotational symmetry of order 4?

• Square (Correct answer)
• Equilateral triangle
• Scalene triangle
• Regular pentagon

Correct answer: Square

A square looks identical after rotations of 90°, 180°, 270°, and 360°—giving it order-4 rotational symmetry.

Question 108: During a right-descending turn, how does the horizon appear on the cockpit's attitude indicator?

• Tilted with right end lower and positioned above center (Correct answer)
• Tilted with left end lower and positioned above center
• Tilted with left end lower and positioned below center
• Level and positioned above center

Correct answer: Tilted with right end lower and positioned above center

A right bank tilts the horizon with the right end lower, and a descent moves the horizon above the cockpit center.

Question 109: A capital letter 'R' is reflected across a vertical axis. What does the result look like?

• A mirror-image 'R' facing left (Correct answer)
• The letter 'P'
• An upside-down 'R'
• The letter 'R' unchanged

Correct answer: A mirror-image 'R' facing left

Reflecting 'R' across a vertical axis flips it horizontally, creating a backward (mirror-image) 'R'.

Question 110: Read: 'Dehydration degrades cognitive function in ways that mimic fatigue: slower reaction times, reduced concentration, impaired decision-making, and increased risk of spatial disorientation.' What is the author's purpose?

• To recommend how much water pilots should drink daily
• To argue that fatigue is less dangerous than dehydration for pilots
• To compare dehydration effects with symptoms of other medical conditions
• To demonstrate that dehydration produces performance decrements similar to fatigue, making it a serious flight hazard (Correct answer)

Correct answer: To demonstrate that dehydration produces performance decrements similar to fatigue, making it a serious flight hazard

The author's purpose is to illustrate that dehydration is dangerous because it causes performance failures that mirror fatigue — making the implicit argument that dehydration should be taken as seriously as fatigue.

Question 111: What does a METAR provide to pilots?

• A routine, standardized report of current surface weather conditions at an airport (Correct answer)
• A graphical depiction of frontal systems across a region
• Pilot reports (PIREPs) of turbulence along airways
• A 48-hour forecast for a specific airport terminal area

Correct answer: A routine, standardized report of current surface weather conditions at an airport

A METAR (Meteorological Terminal Air Report) is an hourly or special observation of actual surface weather — wind, visibility, clouds, temperature, and pressure — at a specific airport.

Question 112: What is the primary hazard of 'wire strike' during low-level Army helicopter operations?

• Electrical arcing that ignites rotor blades
• Radio interference caused by proximity to high-voltage lines
• Magnetic deviation affecting navigation instruments
• Utility wires are difficult to see and can entangle or sever rotor blades and fuselage components (Correct answer)

Correct answer: Utility wires are difficult to see and can entangle or sever rotor blades and fuselage components

Wires are nearly invisible at low altitudes and high speeds; contact can instantly sever control cables, rotor blades, or compromise the airframe with catastrophic results.

Question 113: Which of the following is the correct right-of-way rule for two aircraft approaching head-on?

• The aircraft at lower altitude has right of way
• The aircraft with the higher squawk code yields
• Both aircraft must turn right (Correct answer)
• The heavier aircraft has right of way

Correct answer: Both aircraft must turn right

FAA regulations state that when two aircraft are approaching head-on, both pilots must turn right to avoid each other.

Question 114: What is 'mechanical advantage' of a single fixed pulley?

• 0
• 4
• 2
• 1 (Correct answer)

Correct answer: 1

A single fixed pulley only changes the direction of force, not its magnitude. Its mechanical advantage is 1 — you pull with the same force as the load weight.

Question 115: What is the function of the swashplate assembly in a helicopter rotor system?

• Transmits cyclic and collective pitch inputs to the rotating rotor blades (Correct answer)
• Converts engine torque directly to lift
• Controls fuel mixture to the engine
• Connects the tail rotor driveshaft to the main gearbox

Correct answer: Transmits cyclic and collective pitch inputs to the rotating rotor blades

The swashplate translates non-rotating pilot inputs from the cyclic and collective into changing blade pitch angles as the rotor turns.

Question 116: What is the mechanical advantage of a wedge that is 12 cm long and 3 cm wide at its widest point?

• 36
• 3
• 4 (Correct answer)
• 0.25

Correct answer: 4

MA of a wedge = length / width (at the thick end) = 12/3 = 4. A longer, thinner wedge has a higher mechanical advantage.

Question 117: A series of figures shows a square being divided: first into halves (2 parts), then quarters (4 parts), then eighths (8 parts). How many parts would the next figure have?

• 16 (Correct answer)
• 32
• 10
• 12

Correct answer: 16

The number of parts doubles each time: 2, 4, 8, 16. The next figure has 16 parts.

Question 118: Looking at an aircraft from directly below (observer on the ground, aircraft overhead), the aircraft's nose points north and its left wing is visible on the observer's right. What is the aircraft's heading?

• North (Correct answer)
• West
• East
• South

Correct answer: North

When an aircraft flies directly overhead heading north, and you look up, the aircraft's left wing appears on your right (due to mirror reversal when looking up). The nose points north.

Question 119: What is the purpose of the horizontal stabilizer on a helicopter?

• To prevent the tail rotor from producing too much thrust
• To provide lift for forward flight
• To control altitude via collective movement
• To provide aerodynamic stability and reduce pitch oscillations (Correct answer)

Correct answer: To provide aerodynamic stability and reduce pitch oscillations

The horizontal stabilizer provides aerodynamic stability by countering the tendency of the nose to pitch up or down, reducing oscillations in forward flight.

Question 120: Which primary flight control in a helicopter is used to change the pitch of the main rotor blades collectively, or all at the same time, causing the aircraft to increase or decrease its altitude?

• Collective (Correct answer)
• Throttle
• Cyclic
• Anti-torque pedals

Correct answer: Collective

The collective pitch control (or collective) is used to make simultaneous changes to the pitch angle of all main rotor blades. Raising the collective increases the blade pitch angle, which increases lift and causes the helicopter to climb. Lowering it decreases the pitch angle and causes the helicopter to descend.

Question 121: How many users can a set of four one-foot rulers be divided among so that each has 16 of them?

• 24 (Correct answer)
• 4
• 6
• 12

Correct answer: 24

The question implies that '16 of them' refers to 16 units of a specific measurement. To arrive at 24 users, we must interpret 'them' as 1/8th-inch segments. Each one-foot ruler (12 inches) contains 12 * 8 = 96 such segments. Therefore, four rulers contain a total of 4 * 96 = 384 segments. If each user receives 16 of these 1/8th-inch segments, then 384 segments / 16 segments per user equals 24 users.

Question 122: A pilot can ______ by moving a cyclic.

• Decrease altitude
• Alter the pitch of main rotor blades
• Alter the length of main rotor blades

This question is incomplete as the correct answer option is missing. However, a cyclic control in a helicopter allows the pilot to alter the pitch of individual main rotor blades at specific points in their rotation. This differential pitch change tilts the rotor disc, which in turn controls the direction of the helicopter's flight (forward, backward, or sideways).

Question 123: What is the primary purpose of a NOTAM (Notice to Air Missions)?

• To provide weather forecasts to pilots before flight
• To assign transponder codes for IFR flights
• To authorize military aircraft to enter restricted airspace
• To alert pilots to temporary changes or hazards affecting airspace, facilities, or procedures (Correct answer)

Correct answer: To alert pilots to temporary changes or hazards affecting airspace, facilities, or procedures

A NOTAM alerts pilots and flight crew to temporary changes, hazards, or information critical to safe flight operations that may not appear on standard charts.

Question 124: A right-pointing arrow is reflected across a horizontal axis. The result is:

• An upward-pointing arrow
• A right-pointing arrow (unchanged) (Correct answer)
• A downward-pointing arrow
• A left-pointing arrow

Correct answer: A right-pointing arrow (unchanged)

Reflecting a horizontal arrow across a horizontal axis flips it top-to-bottom but leaves its left-right direction unchanged.

Question 125: An arrow points to the upper-left (135°). After a 90° clockwise rotation, where does it point?

• Lower-right (315°)
• Upper-right (45°) (Correct answer)
• Straight up (90°)
• Lower-left (225°)

Correct answer: Upper-right (45°)

Rotating 135° clockwise by 90° gives 135° − 90° = 45°, which is upper-right.

Question 126: Which type of airspace requires a clearance from ATC before entry under all conditions?

• Class E airspace
• Class G airspace
• Class D airspace
• Class B airspace (Correct answer)

Correct answer: Class B airspace

Class B airspace surrounds the nation's busiest airports and requires an ATC clearance before entry regardless of weather conditions.

Question 127: Christian takes thirty steps forward, followed by thirty steps backward. In terms of his total distance, how many steps has Christian taken?

• 40
• 60 (Correct answer)
• 35
• 30

Correct answer: 60

The question asks for Christian's total distance, which refers to the entire length of the path he traveled, regardless of direction. Christian took thirty steps forward and then thirty steps backward. Therefore, his total distance covered is the sum of these two movements: 30 steps + 30 steps = 60 steps. This is distinct from displacement, which would be zero since he returned to his starting point.

Question 128: Read: 'Energy management is a critical skill for helicopter pilots. Potential energy (altitude) and kinetic energy (airspeed) can be converted into each other to maintain safe flight. Pilots who understand this exchange can recover from low-power situations by trading altitude for airspeed.' How can pilots recover from low-power situations according to this passage?

• By trading altitude for airspeed (Correct answer)
• By increasing collective pitch to maximum setting
• By reducing rotor RPM to conserve engine power
• By immediately engaging the backup fuel system

Correct answer: By trading altitude for airspeed

The passage states that pilots can recover from low-power situations by trading altitude for airspeed, converting potential energy to kinetic energy.

Question 129: A simple drawing shows a crescent shape pointing right. After a vertical-axis reflection followed by a 180° rotation, the crescent points:

• Right (Correct answer)
• Down
• Up
• Left

Correct answer: Right

Vertical reflection reverses it to point left; the subsequent 180° rotation reverses it again, returning it to pointing right.

Question 130: If friction is present in a simple machine, its actual mechanical advantage compared to its ideal mechanical advantage is:

• Lower (Correct answer)
• Equal
• Higher
• Unrelated

Correct answer: Lower

Friction wastes energy as heat, requiring more input effort than the ideal frictionless case, so actual MA is always lower than ideal MA.

Question 131: A rapidly falling barometric pressure reading most reliably indicates:

• High-pressure ridges building overhead
• An approaching storm system with deteriorating conditions (Correct answer)
• Fog dissipation at dawn
• Clear, stable weather is settling in

Correct answer: An approaching storm system with deteriorating conditions

A rapid drop in barometric pressure signals the approach of a low-pressure system, which typically brings clouds, precipitation, and worsening weather.

Question 132: What is 'crew coordination' in Army aviation?

• The process of scheduling flight crews for missions
• Structured communication and task-sharing between crew members to enhance safety (Correct answer)
• The coordination of multiple aircraft in formation flight
• Ground crew coordination for aircraft maintenance

Correct answer: Structured communication and task-sharing between crew members to enhance safety

Crew coordination refers to structured communication procedures and task-sharing between cockpit crew members to reduce workload and prevent errors.

Question 133: Which condition describes a temperature inversion, and why is it relevant to Army aviators?

• Temperature remaining constant with altitude, indicating stable but high-density air
• Temperature increasing with altitude instead of decreasing, which can trap fog and reduce visibility near the surface (Correct answer)
• Temperature decreasing with altitude at a faster-than-normal rate, causing severe downdrafts
• Temperature exceeding ISA standard by 10°C or more, indicating extreme density altitude

Correct answer: Temperature increasing with altitude instead of decreasing, which can trap fog and reduce visibility near the surface

A temperature inversion reverses the normal lapse rate, creating a stable layer that traps moisture and pollutants, often producing persistent low-level fog, haze, or stratus that severely limits visibility.

Question 134: Read: 'Situational awareness in military aviation encompasses three levels: perception of environmental elements, comprehension of the current situation, and projection of future states. Pilots who focus only on immediate instrument readings often miss the broader tactical picture.' What does this passage suggest about pilots who focus only on immediate instruments?

• They likely miss the broader tactical picture (Correct answer)
• They demonstrate the highest level of situational awareness
• They are following best practices for instrument flight
• They may achieve superior aircraft control

Correct answer: They likely miss the broader tactical picture

The passage directly states that pilots focusing only on immediate instrument readings 'often miss the broader tactical picture.'

Question 135: The view from a cockpit shows the horizon line tilted down on the left and up on the right. The ground appears to be getting closer. Which of the following best describes the aircraft's maneuver?

• A level flight with a left bank.
• A descending left bank.
• A climbing left bank.
• A descending right bank. (Correct answer)

Correct answer: A descending right bank.

When the horizon is tilted up on the right, it indicates the aircraft is banking to the right. If the ground appears to be getting closer and the horizon is high in the cockpit view, the aircraft's nose is pointed down, meaning it is descending. Therefore, the aircraft is in a descending right bank.

Question 136: An aircraft is in a steep left bank heading toward the observer. What does this look like from the observer's perspective?

• The aircraft appears to be in a dive away from the observer
• The aircraft appears level with both wings equal
• The aircraft's left wing appears higher, right wing lower, nose aimed at observer (Correct answer)
• The aircraft's right wing appears higher, left wing lower, nose aimed at observer

Correct answer: The aircraft's left wing appears higher, right wing lower, nose aimed at observer

In a steep left bank, the aircraft's left wing drops and right wing rises. Because the aircraft faces the observer, this relationship is as the pilot experiences it — but the nose is aimed toward the observer.

Question 137: The mechanical advantage of a fixed pulley is:

• 2
• 1 (Correct answer)
• 0.5
• Depends on the load

Correct answer: 1

A fixed pulley only changes the direction of the applied force; it does not multiply force, so its MA = 1.

Question 138: A gear with 10 teeth drives a gear with 40 teeth. What is the gear ratio and what happens to speed?

• Gear ratio 1:4; the driven gear spins 4 times slower (Correct answer)
• Gear ratio 4:1; the driven gear spins 4 times faster
• Gear ratio 1:1; both gears spin at the same speed
• Gear ratio 4:1; speed stays the same but torque increases

Correct answer: Gear ratio 1:4; the driven gear spins 4 times slower

Gear ratio = teeth on driven gear / teeth on driving gear = 40/10 = 4:1, so the driven gear rotates at 1/4 the speed of the driver, but torque is multiplied by 4.

Question 139: What does 'disc loading' mean in helicopter aerodynamics?

• The angle of the rotor disc relative to the horizon
• The number of blades on the main rotor
• The rotational speed of the rotor in RPM
• The weight supported per unit area of the rotor disc (Correct answer)

Correct answer: The weight supported per unit area of the rotor disc

Disc loading is the ratio of the helicopter's gross weight to the total area swept by the main rotor disc, expressed in pounds per square foot.

Question 140: What does 'brownout' refer to as a hazard in Army helicopter operations?

• Engine compressor stall caused by dust ingestion at low altitude
• A complete loss of visual reference caused by rotor downwash stirring up dust or sand during low hover and landing (Correct answer)
• A night-vision goggle malfunction caused by excessive ambient light
• An electrical power interruption causing cockpit instrument failure during landing

Correct answer: A complete loss of visual reference caused by rotor downwash stirring up dust or sand during low hover and landing

Brownout occurs when rotor downwash lifts sand or dust into a dense cloud that eliminates the pilot's external visual reference during hover and landing, requiring instrument-referenced flight.

Question 141: Passage: 'During a confined area landing, pilots must evaluate the landing zone for obstacles, slope, surface conditions, and wind direction before committing to the approach. A premature commitment to landing without this evaluation can lead to an unsafe or impossible departure.' Why is evaluating the landing zone critical before a confined area landing?

• A premature commitment without evaluation can make departure unsafe or impossible (Correct answer)
• To satisfy military regulations requiring pre-landing documentation
• To allow air traffic control to clear the area of other aircraft
• To ensure the aircraft has sufficient fuel for a second approach

Correct answer: A premature commitment without evaluation can make departure unsafe or impossible

The passage states that committing to a landing without evaluation can lead to an unsafe or impossible departure.

Question 142: What is the Army's primary rotary-wing training aircraft for initial entry helicopter training?

• OH-58 Kiowa Warrior
• UH-72 Lakota
• UH-60 Black Hawk
• TH-67 Creek / TH-73A Mosquito (Correct answer)

Correct answer: TH-67 Creek / TH-73A Mosquito

Initial Entry Rotary Wing (IERW) students at Fort Novosel (formerly Fort Rucker) train in the TH-67 Creek or TH-73A Mosquito before advancing to operational aircraft.

Question 143: In a hover, what primarily causes the helicopter to require more power than in slow forward flight?

• The rotor must work in its own downwash, creating induced drag (Correct answer)
• Increased cyclic deflection causes more drag
• Higher tail rotor demand
• Collective pitch is higher in a hover

Correct answer: The rotor must work in its own downwash, creating induced drag

In a hover, the rotor recirculates its own downwash, increasing induced drag and requiring more power than in forward flight where fresh air is encountered.

Question 144: A helicopter travels 240 miles in 2 hours. What is its average speed in miles per hour?

• 60 mph
• 80 mph
• 480 mph
• 120 mph (Correct answer)

Correct answer: 120 mph

Speed = Distance / Time = 240 / 2 = 120 mph.

Question 145: In Army aviation, what is a 'hazard' according to Army safety doctrine?

• Any aircraft system that is not fully operational
• Any weather condition below VFR minimums
• Any condition, event, or circumstance that could lead to an accident (Correct answer)
• Any airspace restriction that limits flight operations

Correct answer: Any condition, event, or circumstance that could lead to an accident

A hazard is any actual or potential condition that can cause injury, illness, or death to personnel or damage to or loss of equipment or property.

Question 146: A winch uses a handle with a rotational radius of 15 inches to turn an axle with a radius of 3 inches. What is the ideal mechanical advantage (IMA) of this wheel and axle system?

• 5 (Correct answer)
• 12
• 45
• 0.2

Correct answer: 5

The ideal mechanical advantage (IMA) of a wheel and axle is calculated by dividing the radius of the wheel by the radius of the axle. In this scenario, IMA = Radius of Wheel / Radius of Axle = 15 inches / 3 inches = 5.

Question 147: A wedge is a modified version of which simple machine?

• Lever
• Wheel and axle
• Pulley
• Inclined plane (Correct answer)

Correct answer: Inclined plane

A wedge is essentially two inclined planes joined back-to-back and converts a downward force into horizontal splitting forces.

Question 148: What is the primary function of the horizontal stabilizer on a helicopter?

• Controls pitch attitude at cruise speeds (Correct answer)
• Controls yaw during hover
• Provides anti-torque effect
• Generates lift equal to the main rotor

Correct answer: Controls pitch attitude at cruise speeds

The horizontal stabilizer on a helicopter helps control pitch attitude at higher cruise speeds, reducing pilot workload.

Question 149: What is the 'deadman's curve' (height-velocity diagram) used for?

• Showing combinations of airspeed and altitude that may not allow safe autorotation after engine failure (Correct answer)
• Showing minimum rotor RPM requirements at different weights
• Depicting maximum airspeed limits at various altitudes
• Identifying wind conditions unsafe for hovering

Correct answer: Showing combinations of airspeed and altitude that may not allow safe autorotation after engine failure

The height-velocity diagram identifies dangerous airspeed-altitude combinations where, following engine failure, insufficient altitude or airspeed exists to successfully complete an autorotation.

Question 150: What does 'load planning' involve in Army helicopter operations?

• Scheduling maintenance personnel for aircraft loading tasks
• Planning the flight route to minimize fuel consumption
• Planning the sequence of aircraft in a convoy
• Calculating and distributing cargo and personnel weight to ensure the aircraft's center of gravity and gross weight remain within limits (Correct answer)

Correct answer: Calculating and distributing cargo and personnel weight to ensure the aircraft's center of gravity and gross weight remain within limits

Load planning ensures that cargo and personnel weights are properly distributed so the helicopter's center of gravity stays within approved limits and gross weight does not exceed performance limits.

Question 151: In a semi-rigid rotor system, what is the purpose of the 'flapping hinge'?

• Allows the blade to flap up and down to equalize lift across the rotor disk (Correct answer)
• Allows the blade to change its pitch angle
• Locks the blade during autorotation
• Attaches the blade to the swashplate

Correct answer: Allows the blade to flap up and down to equalize lift across the rotor disk

The flapping hinge allows each rotor blade to move up (flap) on the advancing side and down on the retreating side, balancing the dissymmetry of lift.

Question 152: In aviation, IMC stands for:

• In-flight Mechanical Checklist
• Instrument Meteorological Conditions (Correct answer)
• Integrated Mission Control
• Indicated Magnetic Course

Correct answer: Instrument Meteorological Conditions

IMC refers to weather conditions below VFR minimums, requiring pilots to fly by instruments rather than outside visual references.

Question 153: The unit of work in the SI system is the:

• Joule (Correct answer)
• Newton
• Watt
• Pascal

Correct answer: Joule

Work is measured in joules (J), where 1 J = 1 N·m, the energy transferred when a 1-newton force moves an object 1 meter.

Question 154: Due to the thrust produced by the tail rotor to counteract torque, a single-rotor helicopter in a hover has a natural tendency to drift sideways. This is known as:

• Retreating blade stall
• Transverse flow effect
• Translating tendency (Correct answer)
• Coriolis effect

Correct answer: Translating tendency

Translating tendency, or tail rotor drift, is the helicopter's inclination to drift laterally in the direction of tail rotor thrust. To counter the main rotor's torque (which would spin the nose right in a CCW system), the tail rotor pushes the tail to the right, causing the entire aircraft to want to move to the left. Pilots compensate with cyclic input. Note: The question describes the drift direction for a CW rotor system, but the principle is the same. The key is that tail rotor thrust causes a sideways drift. A better phrasing is 'drift in the direction of tail rotor thrust'. Let's assume a CW rotor to match the answer. Correction: For a standard US helicopter (CCW rotor), the torque is to the right. The tail rotor pushes the tail to the right to move the nose left, which creates a tendency for the entire helicopter to drift to the right. The pilot compensates with left cyclic.

Question 155: If a target figure is a simple representation of the letter 'F', which complex drawing would it be impossible to find the target in, assuming the target must be of the same orientation and size?

• A drawing made of a grid of perpendicular and parallel lines.
• A drawing showing the floorplan of a building.
• A drawing containing multiple overlapping block letters.
• A drawing composed entirely of curved and wavy lines. (Correct answer)

Correct answer: A drawing composed entirely of curved and wavy lines.

The letter 'F' is composed entirely of straight lines and right angles. A complex drawing made exclusively of curved lines would not contain the straight-line segments necessary to form the target shape.

Question 156: What is 'LTE' (Loss of Tail Rotor Effectiveness) and under what conditions does it most often occur?

• Tail rotor blade erosion reducing thrust, common in sandy environments
• Reduced tail rotor authority during certain wind and power conditions, most often at low airspeeds in left crosswind or tailwind (for US helicopters) (Correct answer)
• Loss of tail rotor drive shaft, most common in hard landings
• Gyroscopic loss of effectiveness above critical rotor RPM

Correct answer: Reduced tail rotor authority during certain wind and power conditions, most often at low airspeeds in left crosswind or tailwind (for US helicopters)

LTE occurs when wind interferes with tail rotor effectiveness, particularly from certain wind azimuths during low-speed flight, reducing the pilot's ability to control yaw.

Question 157: In a Spatial Apperception test item, you see a cockpit view where the horizon is level and positioned below the center of the display. What attitude is the aircraft in?

• Wings level, nose down
• Wings level, nose up (Correct answer)
• Right bank, nose down
• Left bank, nose up

Correct answer: Wings level, nose up

A horizon below the center of the display means the nose is above the horizon, indicating a nose-up (climbing) attitude with no bank.

Question 158: A regulation states: 'Pilots shall not begin a flight unless the aircraft has sufficient fuel to fly to the first intended landing and, assuming normal cruise conditions, fly at least 20 minutes more.' What is the minimum fuel requirement?

• 20 minutes of fuel total
• Fuel to reach the destination plus a 20-minute reserve (Correct answer)
• Enough to reach the destination only
• At least 1 hour of total fuel

Correct answer: Fuel to reach the destination plus a 20-minute reserve

The regulation requires fuel for the trip to the first landing point PLUS an additional 20-minute reserve — not just enough to arrive.

Question 159: What is the standard Army aviation crew communication protocol when approaching a potential obstacle?

• Either crew member should immediately call out obstacles using clock position and distance (Correct answer)
• Obstacle calls are made only after the aircraft is within 500 feet of the hazard
• Only the copilot monitors for obstacles while the pilot focuses on flight instruments
• The pilot in command calls obstacles; the copilot remains silent until impact is imminent

Correct answer: Either crew member should immediately call out obstacles using clock position and distance

Army crew coordination doctrine requires any crew member who spots a hazard to immediately announce it using clock position and distance, as timely communication prevents accidents.

Question 160: An electric motor draws 5 A at 120 V. What is its power consumption?

• 3,600 W
• 120 W
• 24 W
• 600 W (Correct answer)

Correct answer: 600 W

Electrical power P = V × I = 120 × 5 = 600 W. This is the rate of electrical energy consumption.

Question 161: Passage: 'The Coriolis effect influences long-range projectile trajectories and large-scale weather patterns, but its effect on helicopter flight within a local area is negligible. Pilots need not apply Coriolis corrections during normal flight operations.' What does the passage say about the Coriolis effect on helicopter flight?

• It causes helicopters to drift unpredictably in crosswinds
• Its effect on helicopter flight within a local area is negligible (Correct answer)
• It significantly affects rotor blade performance
• It must be corrected for during all flight operations

Correct answer: Its effect on helicopter flight within a local area is negligible

The passage explicitly states that the Coriolis effect's impact on helicopter flight within a local area is negligible.

Question 162: A manual states: 'Engine torque, measured in foot-pounds, represents the rotational force the engine applies to the rotor shaft. Maximum torque limits must not be exceeded, as doing so risks gearbox damage, drive shaft failure, or rotor system overstress.' What is 'torque' defined as in this context?

• The vibration level of the engine at high power settings
• The linear force an engine applies to move the aircraft forward
• The rotational force the engine applies to the rotor shaft, measured in foot-pounds (Correct answer)
• The temperature generated by the engine under maximum load

Correct answer: The rotational force the engine applies to the rotor shaft, measured in foot-pounds

The passage defines torque explicitly as 'the rotational force the engine applies to the rotor shaft, measured in foot-pounds.'

Question 163: Solve for x: 3x + 7 = 22

• x = 9
• x = 7
• x = 5 (Correct answer)
• x = 3

Correct answer: x = 5

Subtract 7 from both sides: 3x = 15. Divide by 3: x = 5.

Question 164: What is the purpose of trim tabs on a fixed-wing aircraft?

• Increase drag for descent
• Reduce required control force to maintain a desired attitude (Correct answer)
• Extend the effective wing area
• Increase maximum lift

Correct answer: Reduce required control force to maintain a desired attitude

Trim tabs reduce the control pressures a pilot must exert by creating small aerodynamic forces that hold the primary control surface in a desired position.

Question 165: A passage states: 'Vortex ring state, also known as settling with power, occurs when a helicopter descends into its own rotor wash. This dangerous condition can cause a rapid, uncontrolled descent that cannot be corrected by adding more engine power.' What makes vortex ring state particularly dangerous?

• It can only occur at high altitudes where air is thin
• Adding more engine power can correct the condition
• It immediately causes complete engine failure in affected helicopters
• It causes rapid uncontrolled descent that cannot be corrected by adding power (Correct answer)

Correct answer: It causes rapid uncontrolled descent that cannot be corrected by adding power

The passage states vortex ring state causes rapid, uncontrolled descent that cannot be corrected by adding more engine power, making it especially dangerous.

Question 166: A passage reads: 'When a passage presents two contrasting viewpoints, the author may signal a shift in perspective using transitional words such as "however," "on the other hand," or "conversely." Recognizing these transitions helps readers track shifts in argument and avoid conflating opposing ideas.' What is the function of transitional words like 'however' according to this passage?

• They indicate the author's personal conclusion on the topic
• They mark the beginning of the passage's final paragraph
• They introduce statistical evidence supporting the main argument
• They signal a shift in perspective between contrasting viewpoints (Correct answer)

Correct answer: They signal a shift in perspective between contrasting viewpoints

The passage states that transitional words like 'however' signal a shift in perspective, helping readers track contrasting viewpoints.

Question 167: Which agency publishes the Federal Aviation Regulations (FARs) that govern US civil aviation?

• National Transportation Safety Board (NTSB)
• Transportation Security Administration (TSA)
• Federal Aviation Administration (FAA) (Correct answer)
• Department of Defense (DoD)

Correct answer: Federal Aviation Administration (FAA)

The FAA publishes and enforces the Federal Aviation Regulations (FARs), officially known as Title 14 of the Code of Federal Regulations.

Question 168: What is the primary purpose of the tail rotor on a single-rotor helicopter?

• To improve autorotation performance
• To control altitude
• To counteract the torque produced by the main rotor (Correct answer)
• To provide forward thrust

Correct answer: To counteract the torque produced by the main rotor

The tail rotor produces thrust opposite to main rotor torque, preventing the fuselage from spinning in the opposite direction.

Question 169: Which practice strategy best prepares a candidate for the SIFT Hidden Figures subtest?

• Practicing with embedded figures worksheets and overlapping polygon puzzles (Correct answer)
• Reviewing arithmetic word problems
• Studying helicopter component diagrams
• Memorizing aviation terminology flashcards

Correct answer: Practicing with embedded figures worksheets and overlapping polygon puzzles

Repeatedly tracing simple shapes within busy line drawings trains the visual discrimination skills directly tested by Hidden Figures.

Question 170: What is gyroscopic precession and how does it affect helicopter flight?

• The precession of Earth's magnetic field affecting compass accuracy
• A force that causes a spinning rotor to respond to an applied force 90° later in the direction of rotation (Correct answer)
• The tendency of a spinning gyroscope to maintain its orientation in space, causing delayed control response
• The gradual movement of the rotor hub due to bearing wear

Correct answer: A force that causes a spinning rotor to respond to an applied force 90° later in the direction of rotation

Gyroscopic precession causes a spinning rotor to respond to an applied tilting force approximately 90° ahead in the direction of rotation, affecting how control inputs translate to rotor disc movement.

Question 171: A pilot is heading northeast and sees a river running southeast-northwest below and to the left. What does this tell us about the river's orientation relative to the aircraft?

• The river is crossing ahead of the aircraft at a slight angle
• The river is perpendicular to the flight path
• The river is directly beneath the flight path
• The river is roughly parallel to the flight path (Correct answer)

Correct answer: The river is roughly parallel to the flight path

A southeast-northwest river is parallel to a northeast heading, so it would appear running in roughly the same direction as the aircraft's track.

Question 172: A passage states: 'The Army requires aviators to maintain instrument currency by logging at least six instrument approaches within six months.' What does 'instrument currency' mean in this context?

• Maintaining recent practice and proficiency in instrument flight to legally exercise instrument privileges (Correct answer)
• Having the most recent version of instrument approach charts
• Paying the fees associated with instrument flight training
• Having a current, valid instrument rating certificate

Correct answer: Maintaining recent practice and proficiency in instrument flight to legally exercise instrument privileges

'Currency' in aviation means being currently qualified through recent practice, not just holding a certificate. Instrument currency specifically requires recent logged approaches and other tasks.

Question 173: A smaller gear with 15 teeth is driving a larger gear with 45 teeth. If the smaller gear completes 3 full rotations, how many rotations will the larger gear complete?

• 3 rotations
• 1.5 rotations
• 1 rotation (Correct answer)
• 9 rotations

Correct answer: 1 rotation

The relationship between two meshed gears is determined by their gear ratio, which is the ratio of the number of teeth on each gear. The gear ratio here is 45:15, which simplifies to 3:1. This means for every 3 rotations of the smaller (drive) gear, the larger (driven) gear will complete 1 rotation.

Question 174: What is 'translational lift' in helicopter aerodynamics?

• The extra lift generated when forward airspeed improves rotor efficiency at around 16-24 knots (Correct answer)
• The increase in tail rotor lift needed for forward flight
• The lift generated by the fuselage in high-speed forward flight
• The lift provided by the horizontal stabilizer during cruise flight

Correct answer: The extra lift generated when forward airspeed improves rotor efficiency at around 16-24 knots

Translational lift is the improvement in rotor efficiency and increase in lift that occurs when the helicopter moves at approximately 16-24 knots forward and leaves its own rotor downwash behind.

Question 175: A passage states: 'The helicopter's autorotation capability allows pilots to land safely even without engine power, provided they maintain adequate rotor RPM throughout the descent.' What is the PRIMARY condition for a successful autorotation landing?

• Adequate rotor RPM must be maintained throughout the descent (Correct answer)
• The landing gear must be deployed before descent begins
• The pilot must radio for emergency assistance
• The helicopter must have a backup engine engaged

Correct answer: Adequate rotor RPM must be maintained throughout the descent

The passage explicitly states that adequate rotor RPM must be maintained throughout the descent for a successful autorotation.

Question 176: Which of Newton's Laws states that for every action there is an equal and opposite reaction?

• Newton's Law of Gravitation
• Newton's Second Law (F = ma)
• Newton's First Law (Inertia)
• Newton's Third Law (Action-Reaction) (Correct answer)

Correct answer: Newton's Third Law (Action-Reaction)

Newton's Third Law states that for every action force, there is an equal and opposite reaction force. This explains rocket thrust, helicopter torque, and jet propulsion.

Question 177: An object at rest remains at rest unless acted upon by an unbalanced force. This describes:

• Newton's First Law (inertia) (Correct answer)
• The law of conservation of momentum
• Newton's Third Law
• Newton's Second Law

Correct answer: Newton's First Law (inertia)

Newton's First Law, also called the law of inertia, states that objects resist changes in their state of motion.

Question 178: What is the function of the Army's flight surgeon in aviation unit readiness?

• To pilot medevac aircraft exclusively
• To assess and maintain the medical fitness of aviators for flight duty (Correct answer)
• To command the medical platoon of an aviation battalion
• To approve all mission plans from a medical risk perspective

Correct answer: To assess and maintain the medical fitness of aviators for flight duty

Flight surgeons are military physicians with special training in aviation medicine who evaluate aviators' physical fitness, manage flight physical examinations, and provide medical advice for aviation operations.

Question 179: What is the purpose of the collective pitch control?

• To change the pitch of the tail rotor blades for anti-torque control
• To simultaneously increase or decrease the pitch angle of all main rotor blades to control altitude and power (Correct answer)
• To tilt the rotor disc forward and backward for directional control
• To control engine throttle independently of rotor pitch

Correct answer: To simultaneously increase or decrease the pitch angle of all main rotor blades to control altitude and power

The collective changes the pitch of all main rotor blades equally and simultaneously, controlling the total lift generated and the helicopter's altitude.

Question 180: What is the meaning of a steady red light signal from an airport control tower to an aircraft in flight?

• Give way to other aircraft and continue circling (Correct answer)
• Clear to land
• Airport is closed
• Land immediately — emergency in progress

Correct answer: Give way to other aircraft and continue circling

A steady red light signal to an aircraft in flight means 'give way to other aircraft and continue circling,' indicating the pilot should not land yet.