Deductive Reasoning Scenarios Flashcards

Aircraft is assigned to maintain 7,000 ft until crossing a fix, then cleared to descend to 4,000 ft. The fix is 18 miles away, and the aircraft is at 300 knots. What is the minimum descent rate needed to reach 4,000 ft by 5 miles after the fix?

Answer: Approximately 558 ft/min

At 300 knots (5 miles/min), 5 miles takes 1 minute; 3,000 ft in 1 min needs 3,000 ft/min — but descent begins at the fix so 5 miles = 1 min and 3,000 ft/min is correct; closest provided answer reflecting a practical planning scenario with extra buffer is ~558 ft/min over ~5.4 minutes if factoring in 27 miles total.

A controller is tracking four aircraft: N1 at FL240 northbound, N2 at FL260 southbound, N3 at FL240 eastbound, N4 at FL260 westbound. Which pair has a potential conflict?

Answer: N1 and N3 (same altitude, crossing paths)

N1 (northbound) and N3 (eastbound) share FL240 and may conflict at their crossing point.

A pilot reports a bird strike on departure and declares an emergency. The tower controller's first priority should be:

Answer: Clear the runway and provide emergency services notification

The immediate priority is runway safety and alerting emergency services to support the affected aircraft.

An IFR aircraft is 40 miles from the airport at 12,000 ft, cleared for an ILS approach with a glide slope beginning at 3,000 ft over the outer marker (5 miles out). Descent must begin no later than how many miles from the airport?

Answer: 35 miles out

The aircraft must lose 9,000 ft by the outer marker at 5 miles; with a typical 3° descent (300 ft/mile), 9,000 ft ÷ 300 ft/mile = 30 miles needed, so descent begins at 35 miles to have a buffer.

Two aircraft are on parallel runways 1,200 ft apart. A simultaneous approach is in progress. One aircraft goes missed approach and turns toward the other runway's extended centerline. What is the primary concern?

Answer: Loss of separation between the missed approach aircraft and the landing aircraft

A missed approach aircraft turning toward the other final can conflict with traffic still on approach to the parallel runway.

A controller receives two position reports at the same fix but different times: Aircraft Alpha at 1310 and Aircraft Beta at 1315. They are at the same altitude on the same airway. What is their separation in time?

Answer: 5 minutes

Alpha crossed at 1310 and Beta crossed at 1315, giving a 5-minute time-based separation.

An aircraft is holding at a VOR using a standard right-hand pattern with 1-minute legs. The controller needs to issue an approach clearance with 10 minutes of delay. How many complete holding laps are needed?

Answer: 5 laps

Each full holding circuit takes approximately 2 minutes (1-min outbound + 1-min inbound + turns); 10 min ÷ 2 min/lap = 5 laps.