Aircraft Systems and Performance Flashcards

What is the purpose of the aircraft's fuel selector valve?

Answer: To select which fuel tank supplies fuel to the engine

The fuel selector valve allows the pilot to choose which fuel tank feeds the engine, or to shut off fuel flow entirely.

Which condition increases the risk of carburetor ice formation most significantly?

Answer: Temperatures between 20°F and 70°F with visible moisture or high humidity

Carburetor icing is most likely between 20°F and 70°F when moisture is present, as the venturi cooling effect can drop temperatures well below freezing.

What does the green arc on an airspeed indicator represent?

Answer: Normal operating range between VS1 and VNO

The green arc spans from VS1 (stall speed, clean) to VNO (maximum structural cruising speed) and represents the normal operating speed range.

How does an increase in gross weight affect an aircraft's takeoff distance?

Answer: Takeoff distance increases because more speed and lift are required

A heavier aircraft requires more lift, which means a higher takeoff speed and therefore a longer ground roll before liftoff.

What is the function of the aircraft's voltage regulator?

Answer: To maintain a constant voltage output from the alternator to the electrical bus

The voltage regulator controls the alternator's field current to maintain a steady output voltage regardless of engine RPM or electrical load.

What effect does a tailwind have on landing distance?

Answer: Landing distance increases because the aircraft has higher groundspeed at touchdown

A tailwind increases groundspeed without changing indicated airspeed, resulting in a faster touchdown and longer rollout.

What does the aircraft Pilot's Operating Handbook (POH) define as 'service ceiling'?

Answer: The maximum altitude at which the aircraft can maintain a 100 FPM climb rate

Service ceiling is the density altitude at which the aircraft can maintain a maximum rate of climb of only 100 feet per minute.