FAA General Written Test Questions and
Answers Latest Version Already Passed
What is the primary purpose of a vortex generator on an aircraft wing?
✔✔ To delay airflow separation and improve control effectiveness at high angles of attack.
Why is it important to check the security of cowling fasteners before flight?
✔✔ Loose fasteners can lead to in-flight detachment, causing drag and potential engine damage.
How does humidity affect aircraft engine performance?
✔✔ High humidity reduces air density, decreasing engine power output and efficiency.
What is the function of a torque link on a landing gear strut?
✔✔ It prevents the inner and outer strut from rotating independently, ensuring proper alignment.
Why are aircraft fuel tanks vented?
✔✔ To maintain pressure balance and prevent vacuum formation that could restrict fuel flow.
1
,How does an altimeter sense changes in altitude?
✔✔ It measures changes in atmospheric pressure using aneroid wafers that expand or contract.
What is the purpose of static wicks on an aircraft?
✔✔ To dissipate static electricity and reduce radio interference.
How does a magneto generate electrical power for an aircraft ignition system?
✔✔ It uses a rotating magnet to induce a high-voltage current in a coil.
Why is it important to sump aircraft fuel tanks before flight?
✔✔ To remove water and contaminants that could cause engine failure.
How does a pitot tube measure airspeed?
✔✔ It captures ram air pressure, which is compared to static pressure to determine speed.
Why do aircraft engines use cowl flaps?
✔✔ To regulate engine cooling by controlling airflow around the cylinders.
2
,What is the purpose of a gust lock?
✔✔ To prevent control surface movement when the aircraft is parked.
How does an aircraft’s stall warning system alert the pilot?
✔✔ It activates a horn, light, or stick shaker before reaching the critical angle of attack.
Why are hydraulic fluids used in aircraft systems?
✔✔ They are incompressible and provide smooth, reliable power transmission.
How does the electrical system prevent damage from overvoltage conditions?
✔✔ A voltage regulator or overvoltage relay protects the system by limiting excess voltage.
Why is it necessary to inspect an aircraft tire for tread wear and sidewall damage?
✔✔ Excessive wear or damage can lead to blowouts or loss of control during landing.
What is the purpose of an aircraft’s trim system?
✔✔ To reduce control pressures and maintain steady flight with minimal pilot input.
3
, How does a propeller governor regulate propeller speed?
✔✔ It adjusts oil pressure to change blade pitch, maintaining a constant RPM.
Why must aircraft weight and balance calculations be accurate?
✔✔ Incorrect loading can affect stability, control, and overall flight safety.
How does carburetor heat affect engine performance?
✔✔ It reduces the risk of ice formation but may slightly decrease power output.
Why are aircraft control cables tensioned to a specific value?
✔✔ To ensure precise control surface movement and prevent excessive slack.
What is the function of an aircraft’s ground power unit (GPU)?
✔✔ It provides electrical power for starting the engine and operating systems on the ground.
Why are composite materials used in modern aircraft construction?
✔✔ They provide strength with reduced weight, improving fuel efficiency.
4
Answers Latest Version Already Passed
What is the primary purpose of a vortex generator on an aircraft wing?
✔✔ To delay airflow separation and improve control effectiveness at high angles of attack.
Why is it important to check the security of cowling fasteners before flight?
✔✔ Loose fasteners can lead to in-flight detachment, causing drag and potential engine damage.
How does humidity affect aircraft engine performance?
✔✔ High humidity reduces air density, decreasing engine power output and efficiency.
What is the function of a torque link on a landing gear strut?
✔✔ It prevents the inner and outer strut from rotating independently, ensuring proper alignment.
Why are aircraft fuel tanks vented?
✔✔ To maintain pressure balance and prevent vacuum formation that could restrict fuel flow.
1
,How does an altimeter sense changes in altitude?
✔✔ It measures changes in atmospheric pressure using aneroid wafers that expand or contract.
What is the purpose of static wicks on an aircraft?
✔✔ To dissipate static electricity and reduce radio interference.
How does a magneto generate electrical power for an aircraft ignition system?
✔✔ It uses a rotating magnet to induce a high-voltage current in a coil.
Why is it important to sump aircraft fuel tanks before flight?
✔✔ To remove water and contaminants that could cause engine failure.
How does a pitot tube measure airspeed?
✔✔ It captures ram air pressure, which is compared to static pressure to determine speed.
Why do aircraft engines use cowl flaps?
✔✔ To regulate engine cooling by controlling airflow around the cylinders.
2
,What is the purpose of a gust lock?
✔✔ To prevent control surface movement when the aircraft is parked.
How does an aircraft’s stall warning system alert the pilot?
✔✔ It activates a horn, light, or stick shaker before reaching the critical angle of attack.
Why are hydraulic fluids used in aircraft systems?
✔✔ They are incompressible and provide smooth, reliable power transmission.
How does the electrical system prevent damage from overvoltage conditions?
✔✔ A voltage regulator or overvoltage relay protects the system by limiting excess voltage.
Why is it necessary to inspect an aircraft tire for tread wear and sidewall damage?
✔✔ Excessive wear or damage can lead to blowouts or loss of control during landing.
What is the purpose of an aircraft’s trim system?
✔✔ To reduce control pressures and maintain steady flight with minimal pilot input.
3
, How does a propeller governor regulate propeller speed?
✔✔ It adjusts oil pressure to change blade pitch, maintaining a constant RPM.
Why must aircraft weight and balance calculations be accurate?
✔✔ Incorrect loading can affect stability, control, and overall flight safety.
How does carburetor heat affect engine performance?
✔✔ It reduces the risk of ice formation but may slightly decrease power output.
Why are aircraft control cables tensioned to a specific value?
✔✔ To ensure precise control surface movement and prevent excessive slack.
What is the function of an aircraft’s ground power unit (GPU)?
✔✔ It provides electrical power for starting the engine and operating systems on the ground.
Why are composite materials used in modern aircraft construction?
✔✔ They provide strength with reduced weight, improving fuel efficiency.
4
