Flight Engineer Licensure Exam Practice

Flight Engineer Licensure Exam Practice Test Questions And Correct Answers (Verified Answers) Plus Rationales 2026 Q&A | Instant Download Pdf

Subjects Covered: Aerodynamics, Aircraft Systems, Powerplant, Flight

Operations, Meteorology, Air Law & Regulations, and Navigation.

• What is the primary purpose of a flight engineer?
• To pilot the aircraft during cruise
• To monitor and manage aircraft systems in flight
• To communicate with air traffic control
• To perform in-flight cabin duties

Rationale: The flight engineer oversees and controls all major aircraft

systems (fuel, electrical, hydraulics, pressurization) ensuring optimal operation during all phases of flight.

• What is the standard sea-level pressure in inches of mercury? 1 / 4

• 29.62 inHg
• 29.92 inHg
• 30.12 inHg
• 28.92 inHg

Rationale: Standard atmosphere is defined as 29.92 inHg at sea level

(1013.25 hPa).

3. The Bernoulli Principle states that:

• Pressure increases as velocity increases
• Pressure decreases as velocity increases
• Pressure and velocity are unrelated
• Density increases with temperature

Rationale: Bernoulli’s principle explains lift: as airflow speed increases over a wing, static pressure decreases, creating lift.

4. The main function of the bleed air system is:

• To supply fuel to the engines
• To control flight surfaces
• To provide air for pressurization and anti-icing
• To lubricate turbine blades

Rationale: Engine bleed air is tapped for cabin pressurization, air

conditioning, and anti-icing systems. 2 / 4

5. The EPR (Engine Pressure Ratio) is a measure of:

• Fuel pressure
• Engine temperature
• Thrust produced by a jet engine
• Oil pressure

Rationale: EPR compares turbine discharge pressure to compressor inlet

pressure to indicate jet engine thrust.

• What happens to the lift produced if air density decreases?
• Lift increases
• Lift decreases
• Lift remains constant
• Lift fluctuates randomly

Rationale: Lift is directly proportional to air density; at higher altitudes or

temperatures, density decreases and lift reduces.

7. The function of the APU (Auxiliary Power Unit) is to:

• Provide thrust during takeoff
• Supply electrical and pneumatic power on the ground
• Control engine temperatures
• Pressurize the fuel tanks 3 / 4

Rationale: The APU powers aircraft systems and starts main engines

without external ground support.

8. The Mach number represents the ratio of:

• Altitude to temperature
• True airspeed to the speed of sound
• Indicated airspeed to wind speed
• Groundspeed to density altitude

Rationale: Mach = True Airspeed ÷ Local Speed of Sound; used to describe

high-speed flight regimes.

9. The main advantage of a turbofan engine over a turbojet is:

• Lower fuel consumption and noise
• Higher fuel consumption but simpler design
• No need for fan blades
• Lower thrust at low altitudes

Rationale: Turbofans improve efficiency and reduce noise by bypassing

some air around the core.

• Which component regulates cabin pressure?
• / 4