Airforce Mission, Logistics & Operations Quiz

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  • 1/281 Questions

    What type of fuel pumps are used for engine feed in the forward and AFT reservoir tanks of a fighter aircraft?

    • Single-impeller, turbine-driven
    • Single-impeller, electrically driven
    • Dual-impeller, turbine-driven
    • Dual-impeller, electrically driven
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About This Quiz

How much do you know about the airforce logistics and operations? Would you be able to pass the quiz? The logistics system of the Air Force is extensive? Do you know what are the major operations in logistics? Take the quiz and learn interesting facts with every question you attempt.

Airforce Mission, Logistics & Operations Quiz - Quiz

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  • 2. 

    What type valve is the crossfeed valve in a fighter aircraft?

    • Fuel pressure-operated gate

    • Hydraulic-operated gate

    • Motor-operated butterfly

    • Solenoid-operated butterfly

    Correct Answer
    A. Fuel pressure-operated gate
    Explanation
    The crossfeed valve in a fighter aircraft is a fuel pressure-operated gate. This means that it is controlled by the pressure of the fuel in the system. When the fuel pressure reaches a certain level, it opens the valve to allow fuel to flow from one fuel tank to another. This type of valve is commonly used in aircraft fuel systems to ensure proper fuel distribution and balance between tanks during flight.

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  • 3. 

    What position would you place the ENGINE FEED switch in order to correct a fuel imbalance caused by to much fuel in the forward fuel system of a fighter aircraft?

    • AFT

    • FWD

    • BALANCE

    • NORMAL

    Correct Answer
    A. FWD
    Explanation
    To correct a fuel imbalance caused by too much fuel in the forward fuel system of a fighter aircraft, the ENGINE FEED switch should be placed in the "FWD" position. This would allow the excess fuel in the forward fuel system to be used by the engine, helping to balance the fuel distribution between the forward and aft systems.

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  • 4. 

    What tanks must be operating to use body tank fuel to feed the engines on a tanker aircraft?

    • Air refueling

    • Alternate

    • Main tank

    • Override

    Correct Answer
    A. Air refueling
    Explanation
    To use body tank fuel to feed the engines on a tanker aircraft, air refueling tanks must be operating. Air refueling allows the tanker aircraft to receive fuel from another aircraft during flight, enabling it to transfer fuel to other aircraft. This is essential for extending the range and endurance of the tanker aircraft, as well as for conducting aerial refueling operations. The other options mentioned, such as alternate, main tank, and override, do not specifically pertain to the process of using body tank fuel for engine feeding in a tanker aircraft.

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  • 5. 

    What valves must be open to feed all engines from the center wing tank on a tanker aircraft?

    • Air refueling to engine manifold

    • Gravity feed

    • Tank to manifold

    • Override wing

    Correct Answer
    A. Tank to manifold
    Explanation
    To feed all engines from the center wing tank on a tanker aircraft, the valves that must be open are the "Tank to manifold" valves. These valves allow the fuel to flow from the center wing tank to the manifold, which distributes the fuel to the engines. By opening these valves, the fuel can be transferred efficiently and effectively to all engines, ensuring proper fuel supply during flight.

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  • 6. 

    What causes fuel to transfer from the reserve tank on a tanker aircraft during flight?

    • Air pressure

    • Boost pump pressure

    • Gravity

    • Override pump pressure

    Correct Answer
    A. Gravity
    Explanation
    Fuel transfers from the reserve tank on a tanker aircraft during flight due to gravity. Gravity causes the fuel to flow from a higher level (the reserve tank) to a lower level (the main tank) through the fuel system. This natural force allows the fuel to be transferred without the need for any additional mechanisms or external pressures.

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  • 7. 

    Why is the output pressure and the flow ratings of a centrifugal pump greater then the amount the system needs?

    • Provide fuel to the engines during negative gravity or inverted flight conditions.

    • Prevent reverse flow of fuel from a pump with a greater pressure output.

    • Prevent fuel boiling and evaporation in the wing tanks at high altitudes.

    • Provide an ample supply of fuel in case of a single pump failure.

    Correct Answer
    A. Provide an ample supply of fuel in case of a single pump failure.
    Explanation
    The output pressure and flow ratings of a centrifugal pump are greater than the amount the system needs in order to provide an ample supply of fuel in case of a single pump failure. By having a pump that can deliver more fuel than necessary, there is a backup in case one pump fails, ensuring that the engines continue to receive fuel and preventing any potential loss of power or performance. This redundancy is crucial for the safety and reliability of the system.

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  • 8. 

    What type of centrifugal pump is used when fuel supply is required during negative gravity conditions?

    • In-line ejector

    • Dual-impeller

    • Rotary-vane

    • Top-mounted

    Correct Answer
    A. Dual-impeller
    Explanation
    A dual-impeller centrifugal pump is used when fuel supply is required during negative gravity conditions. This type of pump is designed with two impellers, which allows it to provide a higher pressure and suction capability, making it suitable for pumping fuel against the force of gravity. The dual-impeller design ensures efficient fuel transfer even in challenging conditions, making it the most appropriate choice for this specific application.

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  • 9. 

    What item prevents foreign objects from holding the bypass valve open  in a dual-impeller pump?

    • An inlet screen

    • An in-line filter

    • A one-way check valve

    • A two-way check valve

    Correct Answer
    A. An inlet screen
    Explanation
    An inlet screen prevents foreign objects from holding the bypass valve open in a dual-impeller pump. The purpose of an inlet screen is to filter out any debris or foreign objects that may be present in the fluid being pumped. By capturing these objects, the screen prevents them from entering the pump and potentially interfering with the operation of the bypass valve. This ensures that the bypass valve can function properly and maintain the desired flow rate without any obstructions.

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  • 10. 

    What does the arrow stamped on the body of a check valve indicate?

    • Valve installation position to prevent air entrapment

    • Location of manufactures data block

    • Direction of fuel flow

    • Direction of by-pass fuel flow

    Correct Answer
    A. Direction of fuel flow
    Explanation
    The arrow stamped on the body of a check valve indicates the direction of fuel flow. This arrow serves as a visual indicator for the user to ensure that the valve is installed in the correct orientation to allow the fuel to flow in the intended direction.

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  • 11. 

    What feature prevents excess pressure from building up in trapped lines or within the body of a sliding gate valve?

    • One-way check valves

    • Spring-loaded check valves

    • Pressure relief valve

    • Thermal relief valve

    Correct Answer
    A. Thermal relief valve
    Explanation
    A thermal relief valve is designed to prevent excess pressure from building up in trapped lines or within the body of a sliding gate valve by releasing the pressure when it reaches a certain temperature. As the temperature increases, the thermal relief valve opens, allowing the excess pressure to escape and preventing any damage or failure of the system. This feature is crucial in ensuring the safety and efficiency of the system, as it prevents the pressure from reaching dangerous levels and causing potential hazards.

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  • 12. 

    What type of seal is between the disc and the valve body on a disc-type valve?

    • O-ring

    • V-ring

    • Gasket

    • Metal-to-Metal

    Correct Answer
    A. O-ring
    Explanation
    The correct answer is O-ring. An O-ring is a type of seal that is commonly used between the disc and the valve body on a disc-type valve. O-rings are circular in shape and made of rubber or elastomer material. They provide a tight and reliable seal by filling the gap between the disc and the valve body, preventing any leakage of fluids or gases. O-rings are known for their flexibility, durability, and resistance to high pressures and temperatures, making them an ideal choice for sealing applications in valves.

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  • 13. 

    The best method for troubleshooting a fighter engine feed system component you suspect of leaking is to

    • Operate the component and check for leaks.

    • Pressurize the manifold with air and check for leaks.

    • Pressurize the manifold with fuel and check for leaks.

    • Stand test with fuel for 30 minutes and listen for leaks.

    Correct Answer
    A. Pressurize the manifold with fuel and check for leaks.
    Explanation
    Pressurizing the manifold with fuel and checking for leaks is the best method for troubleshooting a fighter engine feed system component suspected of leaking. This is because the fuel is the substance that the component is designed to handle, so by pressurizing the manifold with fuel, any leaks will be immediately apparent. This method allows for a more accurate assessment of the component's condition and ensures that any leaks are detected and addressed promptly.

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  • 14. 

    What is first checked when operating a boost pump problem on a fighter aircraft?

    • Continuity across the pressure switch

    • Direct fuel pressure reading of the pump

    • Fuel pressure switch reading

    • Power to the boost pump

    Correct Answer
    A. Direct fuel pressure reading of the pump
    Explanation
    When operating a boost pump problem on a fighter aircraft, the first thing that is checked is the direct fuel pressure reading of the pump. This is important because it allows the operator to verify that the pump is functioning properly and delivering the correct amount of fuel pressure. By checking the direct fuel pressure reading, any issues or abnormalities with the pump can be identified and addressed promptly to ensure the aircraft's fuel system is working efficiently and safely.

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  • 15. 

    On a tanker aircraft, what prevents the engine from running out of fuel and flaming out if its main tank is hit by small arms fire?

    • Automatic fuel monitoring system

    • Engine flameout protection device

    • Crossfeed system

    • Fuel tank and engine sensing device

    Correct Answer
    A. Crossfeed system
    Explanation
    The crossfeed system prevents the engine from running out of fuel and flaming out if its main tank is hit by small arms fire. This system allows fuel to be transferred from one tank to another, ensuring a continuous fuel supply to the engine. By redirecting fuel from an undamaged tank to the engine, the crossfeed system maintains engine operation and prevents flameout in the event of damage to the main tank.

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  • 16. 

    You are troubleshooting a malfunction of the crossfeed system on a tanker aircraft when you determine the is no pressure available to route fuel to the crossfeed manifold. The most probable cause of this malfunction is

    • A malfunctioning boost pump.

    • FOD stuck in a shutoff valve.

    • An inoperative pressure transmitter.

    • A stuck open check valve.

    Correct Answer
    A. A malfunctioning boost pump.
    Explanation
    The most probable cause of the malfunction in the crossfeed system is a malfunctioning boost pump. This is because the boost pump is responsible for providing the necessary pressure to route fuel to the crossfeed manifold. If the boost pump is not functioning properly, it would result in a lack of pressure and therefore prevent fuel from being routed to the crossfeed manifold.

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  • 17. 

    What is the most probable cause when a circuit breaker for a shutoff valve continues to "pop?"

    • An open in the shut off valve circuit

    • A defective circuit breaker

    • Too much pressure in the system

    • The valve motor has shorted out

    Correct Answer
    A. The valve motor has shorted out
    Explanation
    The most probable cause when a circuit breaker for a shutoff valve continues to "pop" is that the valve motor has shorted out. This means that there is an electrical issue with the motor of the valve, causing it to malfunction and draw excessive current. As a result, the circuit breaker is tripping to protect the circuit from further damage.

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  • 18. 

    What is the purpose of the power transfer method of transferring fuel on a fighter jet?

    • Pressurize and scavenge the tanks

    • Augment fuel transfer and scavenge the tanks

    • Pressurize the tanks

    • Augment fuel transfer

    Correct Answer
    A. Augment fuel transfer and scavenge the tanks
    Explanation
    The purpose of the power transfer method of transferring fuel on a fighter jet is to augment fuel transfer and scavenge the tanks. This means that the method not only helps in transferring fuel from one tank to another but also enhances the efficiency of the fuel transfer process. Additionally, it also helps in removing any excess fuel or contaminants from the tanks, ensuring that the fuel system remains clean and functional.

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  • 19. 

    How many boost pumps are used on a fighter aircraft power transfer system?

    • 2

    • 4

    • 6

    • 8

    Correct Answer
    A. 6
    Explanation
    Fighter aircraft power transfer systems typically use six boost pumps. Boost pumps are responsible for transferring fuel from the aircraft's fuel tanks to the engine. Having multiple boost pumps ensures a continuous and reliable fuel supply to the engine, especially during high-performance maneuvers and combat situations. Using six boost pumps allows for redundancy and enhances the safety and efficiency of the aircraft's power transfer system.

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  • 20. 

    Which fuel tanks will transfer fuel first in a fighter aircraft?

    • External centerline

    • Left wing external

    • Right wing external

    • Left and right wing external

    Correct Answer
    A. External centerline
    Explanation
    The external centerline fuel tank in a fighter aircraft will transfer fuel first. This is because the external centerline tank is usually the largest and carries the most fuel compared to the wing external tanks. Additionally, the external centerline tank is often located closer to the aircraft's center of gravity, allowing for more efficient fuel transfer.

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  • 21. 

    You are troubleshooting a problem on a fighter aircraft. You find that none of the external tanks transferred fuel with the selection switch in the NORM position; however, the external wing tanks did transfer fuel with the switch in the WING FIRST position. The most probable cause of this malfunction is

    • Centerline refuel/transfer valve is inoperative.

    • External vent and pressurization valve is bad.

    • External transfer shutoff valve is bad.

    • Inoperative wing float valve.

    Correct Answer
    A. Centerline refuel/transfer valve is inoperative.
    Explanation
    The most probable cause of this malfunction is that the centerline refuel/transfer valve is inoperative. This is because the question states that none of the external tanks transferred fuel with the selection switch in the NORM position, but the external wing tanks did transfer fuel with the switch in the WING FIRST position. This suggests that there is a problem specifically with the centerline refuel/transfer valve, as it is not allowing fuel to transfer in the NORM position.

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  • 22. 

    How is the fuel level control valve on a cargo aircraft operated and controlled respectively?

    • Solenoid/manually

    • Hydro mechanically/solenoid

    • Fuel pressure/solenoid

    • Hydro mechanically/fuel pressure

    Correct Answer
    A. Hydro mechanically/solenoid
    Explanation
    The fuel level control valve on a cargo aircraft is operated and controlled hydro mechanically, meaning it is controlled by a hydraulic mechanism. Additionally, it is operated by a solenoid, which is an electromechanical device that controls the flow of fuel.

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  • 23. 

    What cargo aircraft component is designed to sense fuel pressure and transmit a signal to an indicator on the fuel management panel to allow determination of the boost pump output pressure?

    • Pressure sensing element

    • Pressure transmitter

    • Pressure switch

    • Pressure gauge

    Correct Answer
    A. Pressure transmitter
    Explanation
    A pressure transmitter is a component in a cargo aircraft that is specifically designed to sense fuel pressure and transmit a signal to an indicator on the fuel management panel. This allows the pilot or fuel management personnel to determine the output pressure of the boost pump. The pressure transmitter is responsible for accurately measuring and relaying this information, ensuring that the fuel system operates efficiently and safely.

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  • 24. 

    Which indication shows that a boost pump on a cargo aircraft  is putting out sufficient pressure?

    • PRESS LOW light goes off

    • PRESS LOW light illuminates

    • Pressure indicator reads 16 psi

    • Pressure indicator reads 20 psi

    Correct Answer
    A. PRESS LOW light goes off
    Explanation
    When the PRESS LOW light goes off, it indicates that the boost pump on a cargo aircraft is putting out sufficient pressure. This means that the pressure in the system is within the acceptable range and there is no need to be concerned about low pressure.

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  • 25. 

    TO prevent the introduction of foreign objects into the fuel transfer system of a cargo aircraft, the jettison mast is equipped with a

    • Flapper.

    • Check valve.

    • Safety wire device.

    • Flame arrester screen.

    Correct Answer
    A. Flame arrester screen.
    Explanation
    The jettison mast is a part of the fuel transfer system in a cargo aircraft. It is designed to allow the aircraft to quickly release fuel in case of an emergency. To prevent the introduction of foreign objects into the fuel transfer system, the jettison mast is equipped with a flame arrester screen. This screen acts as a barrier, preventing any foreign objects or flames from entering the system and potentially causing a fire or explosion. This safety measure ensures the integrity and functionality of the fuel transfer system during emergency fuel release operations.

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  • 26. 

    Which kind of fuel valves control the flow of fuel through the jettison system?

    • Transfer

    • Refuel

    • Dump

    • Vent

    Correct Answer
    A. Dump
    Explanation
    Dump valves control the flow of fuel through the jettison system. These valves are specifically designed to release or dump excess fuel from the aircraft's fuel tanks. This is typically done to reduce the aircraft's weight in emergency situations or to balance the fuel load between tanks. Dump valves allow the fuel to be safely and quickly expelled from the aircraft, ensuring the safety and stability of the aircraft during flight.

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  • 27. 

    What safety feature in the bomber aircraft fuel jettison system prevents the accidental loss of fuel while the aircraft is on the ground?

    • The DUMP switch cover is safety-wired closed.

    • The DUMP switch is spring loaded to the OFF position.

    • The landing gear must be in the airborne position.

    • A shorting plug must be connected for the dump valve to open.

    Correct Answer
    A. The landing gear must be in the airborne position.
    Explanation
    The correct answer is that the landing gear must be in the airborne position. This safety feature ensures that the fuel jettison system cannot be activated while the aircraft is on the ground, preventing the accidental loss of fuel. By requiring the landing gear to be in the airborne position, it ensures that the aircraft is in a safe and stable state before allowing the fuel jettison system to be activated. This helps to prevent any potential hazards or accidents that could occur if fuel were to be jettisoned while the aircraft is on the ground.

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  • 28. 

    In addition to the dump valve, which valve(s) on a bomber aircraft must be open to allow fuel into the wing transfer lines to be dumped overboard?

    • Ballast tank isolation valve

    • Forward weapons bay vent disconnect valve

    • Ballast tank isolation valve and forward weapons bay vent disconnect valve

    • Main pressure actuated vent valve and forward weapons bay vent disconnect valve

    Correct Answer
    A. Ballast tank isolation valve
    Explanation
    The ballast tank isolation valve must be open to allow fuel into the wing transfer lines to be dumped overboard. This valve controls the flow of fuel from the ballast tank to the wing transfer lines. By opening this valve, fuel can be transferred from the ballast tank to the wing transfer lines and then dumped overboard. This helps to reduce the weight of the aircraft and improve its performance. The other valves listed in the options do not play a role in allowing fuel into the wing transfer lines for dumping.

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  • 29. 

    Which would most likely be used to control the automatic pump shutoff, when all fuel is depleted from a fuel tank?

    • Pressure switch

    • Toggle switch

    • Float switch

    • Float valve

    Correct Answer
    A. Float switch
    Explanation
    A float switch is a device that is commonly used to control the automatic pump shutoff when all fuel is depleted from a fuel tank. It consists of a floating ball or buoyant object that rises and falls with the liquid level. When the fuel level drops below a certain point, the float switch is triggered and sends a signal to the pump to shut off. This ensures that the pump does not continue running when there is no fuel left in the tank, preventing damage to the pump and conserving energy.

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  • 30. 

    Refueling by using the fuel-level control valves is a much safer operation than filler neck refueling because the valves will

    • Provide an automatic refueling of a tank to any desired level.

    • Automatically stop the flow of fuel into a tank prior to overflow.

    • Signal the refueling monitor when to stop the fuel flow.

    • Shut down the refueling vehicle if the tanks start to overflow.

    Correct Answer
    A. Automatically stop the flow of fuel into a tank prior to overflow.
    Explanation
    The correct answer is "automatically stop the flow of fuel into a tank prior to overflow." This is because fuel-level control valves are designed to regulate the flow of fuel and prevent overfilling. These valves are equipped with sensors that detect when the tank is reaching its maximum capacity and automatically shut off the flow of fuel to prevent overflow. This feature ensures safety during refueling operations and minimizes the risk of fuel spills or accidents.

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  • 31. 

    What principle is used to control the fuel-level control valve?

    • Pneumatic-electrical

    • Electrical-mechanical

    • Pneumatic-mechanical

    • Hydro mechanical

    Correct Answer
    A. Hydro mechanical
    Explanation
    The principle used to control the fuel-level control valve is hydro mechanical. This means that the control valve is operated by a combination of hydraulic and mechanical forces.

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  • 32. 

    What part of a piston-type fuel-level control valve prevents fuel from entering the tank?

    • A spring

    • The float

    • A pilot valve

    • The diaphragm

    Correct Answer
    A. A pilot valve
    Explanation
    A pilot valve is the part of a piston-type fuel-level control valve that prevents fuel from entering the tank. It is responsible for regulating the flow of fuel and ensuring that it does not enter the tank when it is not needed. The pilot valve acts as a gatekeeper, allowing fuel to flow only when necessary and preventing any overflow or leakage.

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  • 33. 

    Approximately how much air space is left at the top of the fuel tanks of a cargo aircraft after ground refueling?

    • 1%

    • 3%

    • 5%

    • 7%

    Correct Answer
    A. 3%
    Explanation
    After ground refueling, approximately 3% of air space is left at the top of the fuel tanks of a cargo aircraft. This means that the tanks are filled up to 97% of their total capacity, leaving a small amount of room for expansion and contraction of the fuel during flight.

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  • 34. 

    Which cargo aircraft components should be operationally checked during the first few minutes of ground refueling?

    • Single point receptacle drain pump and valve

    • Refueling isolation shutoff valves

    • Fuel-level control valves

    • Separation shutoff valves

    Correct Answer
    A. Fuel-level control valves
    Explanation
    During the first few minutes of ground refueling, it is important to operationally check the fuel-level control valves in a cargo aircraft. These valves are responsible for controlling the fuel levels in the aircraft's fuel tanks. By checking these valves, the ground crew can ensure that the fuel is being properly distributed and that there are no leaks or malfunctions that could affect the aircraft's fuel system. This is crucial for the safety and efficiency of the refueling process.

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  • 35. 

    During refueling on a fighter aircraft, fuel was vented overboard the refueling operation would not stop. The most probable cause of the is an inoperative

    • Refuel/transfer float valve

    • Refuel shutoff valve

    • Selective refueling shutoff valve

    • Refuel/transfer control valve

    Correct Answer
    A. Refuel shutoff valve
    Explanation
    The most probable cause of the fuel venting overboard during refueling on a fighter aircraft is an inoperative refuel shutoff valve. This valve is responsible for stopping the refueling operation once the desired amount of fuel has been transferred. If the valve is not functioning properly, it would not be able to close off the fuel flow, resulting in the fuel being vented overboard.

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  • 36. 

    What light on a bomber aircraft aerial refueling system  if all conditions are satisfied prior to boom and receptacle connection? 

    • Amber DISC light

    • Blue STATUS light

    • Green LATCHED light

    • Blue READY/NWS light

    Correct Answer
    A. Blue READY/NWS light
    Explanation
    The blue READY/NWS light indicates that all conditions are satisfied prior to boom and receptacle connection in a bomber aircraft aerial refueling system. This light serves as a signal to the crew that it is safe to proceed with the refueling process.

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  • 37. 

    The aerial refueling circuitry on a bomber aerial refueling system is energized by the cam-operated aerial refuel

    • Master switch.

    • Pressure switch.

    • Pull-to-refuel switch.

    • Pull-to-refuel-handle.

    Correct Answer
    A. Pull-to-refuel switch.
    Explanation
    The correct answer is "pull-to-refuel switch." In an aerial refueling system on a bomber, the circuitry is energized by the pull-to-refuel switch. This switch is designed to activate the refueling process by initiating the necessary electrical connections and signals. It allows the pilot or operator to easily control and initiate the refueling operation by simply pulling the switch. This ensures a smooth and efficient refueling process during aerial operations.

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  • 38. 

    What action(s) will generate command output signals from the electrical multiplex bus (EMUX) and energize the aerial refuel power supply on a bomber aircraft?

    • Pushing up on the PULL REFUEL T-handle and placing the MODE switch in the NORM position.

    • Pulling down on the PULL REFUEL T-handle and placing the MODE switch in the NORM position.

    • Pulling down on the PULL REFUEL T-handle.

    • Place the MODE switch in the NORM position.

    Correct Answer
    A. Pulling down on the PULL REFUEL T-handle and placing the MODE switch in the NORM position.
  • 39. 

    Which condition will result in an automatic disconnect of the boom and receptacle during aerial refueling on a bomber aircraft?

    • Boom travel limits are exceeded

    • Reset trigger on pilot's stick is pressed

    • Low pressure condition exists

    • Fuel center of gravity is off balance

    Correct Answer
    A. Boom travel limits are exceeded
    Explanation
    If the boom travel limits are exceeded during aerial refueling on a bomber aircraft, it will result in an automatic disconnect of the boom and receptacle. This safety measure is in place to prevent any damage or accidents that could occur if the boom extends beyond its designated limits.

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  • 40. 

    A manual disconnect of the tanker and receiver on a bomber aircraft has been accomplished. What action will reset the Universal Aerial Refueling Receptacle Slipway Instillation (UARRSI) and signal amplifier, causing the READY/NWS light to illuminate?

    • Cycling the slipway to closed and open.

    • Pressing the aerial refueling RESET button.

    • Placing the pilot trigger switch to the first detent.

    • Placing the MODE switch to the NORM position.

    Correct Answer
    A. Placing the pilot trigger switch to the first detent.
    Explanation
    Placing the pilot trigger switch to the first detent will reset the Universal Aerial Refueling Receptacle Slipway Installation (UARRSI) and signal amplifier, causing the READY/NWS light to illuminate. This action indicates that the system is ready for aerial refueling.

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  • 41. 

    You are troubleshooting a malfunction in a bomber aerial refueling system. The fault code of the malfunction is 28-25-AM. What does the letter A indicate?

    • The faulty component within the system

    • Corrective action required to fix the problem

    • The faulty system or subsystem

    • A fault isolation diagram is provided

    Correct Answer
    A. A fault isolation diagram is provided
    Explanation
    The letter A in the fault code 28-25-AM indicates that a fault isolation diagram is provided. This means that there is a diagram available that can help in identifying and isolating the specific fault within the bomber aerial refueling system. The fault isolation diagram will provide guidance on how to troubleshoot and fix the malfunction.

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  • 42. 

    You are troubleshooting a problem on a bomber aircraft. At a certain point, the fault isolation diagram requests that you enter a parameter monitor code (PMC). To comply with the request you would enter the code on the

    • System status panel in the aft crew station.

    • System status panel on the windshield center post.

    • CITS control and display panel on the windshield center post.

    • CITS control and display panel in the aft crew station.

    Correct Answer
    A. CITS control and display panel in the aft crew station.
    Explanation
    The correct answer is the CITS control and display panel in the aft crew station. The fault isolation diagram specifically requests the entry of a parameter monitor code (PMC), and the CITS control and display panel is the appropriate location for entering such codes. The system status panel on the windshield center post is not mentioned in relation to entering the PMC. Therefore, the CITS control and display panel in the aft crew station is the most suitable option.

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  • 43. 

    What is the purpose of the tank scavenge system on a cargo aircraft?

    • Drain fuel from the low sump areas of the tank.

    • Reduce the amount of unusable fuel in the tank.

    • Prevent the vent boxes from venting fuel overboard.

    • Ensure an un interrupted flow of fuel to the engines.

    Correct Answer
    A. Ensure an un interrupted flow of fuel to the engines.
    Explanation
    The purpose of the tank scavenge system on a cargo aircraft is to ensure an uninterrupted flow of fuel to the engines. This system helps to prevent any fuel starvation or interruptions in fuel supply, which could lead to engine failure or loss of power. By scavenging fuel from low sump areas of the tank, the system helps to maintain a consistent and continuous fuel supply to the engines, ensuring their proper functioning throughout the flight.

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  • 44. 

    What type displacement jet/ejector pumps are in the tank scavenge system of a cargo aircraft?

    • Constant

    • Positive

    • Variable

    • Venturi

    Correct Answer
    A. Variable
    Explanation
    Variable displacement jet/ejector pumps are used in the tank scavenge system of a cargo aircraft. These pumps are designed to vary the amount of fluid they move based on the demand of the system. This allows for efficient scavenging of fuel or other fluids from the tanks, as the pump can adjust its output to match the needs of the system. Variable displacement pumps are commonly used in applications where the flow rate needs to be adjusted dynamically, making them suitable for the tank scavenge system in a cargo aircraft.

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  • 45. 

    Combined with the ejector pumps, what cargo aircraft components keep the boost pump inlet submerged in fuel at all times?

    • Vent box

    • Float valve

    • Surge box

    • Check valve

    Correct Answer
    A. Surge box
    Explanation
    The surge box, combined with the ejector pumps, ensures that the boost pump inlet remains submerged in fuel at all times. The surge box helps to maintain a steady fuel supply by absorbing any fluctuations or surges in fuel flow, preventing the boost pump inlet from being exposed to air. This ensures proper functioning and prevents any potential damage to the fuel system. The other options, vent box, float valve, and check valve, are not directly related to keeping the boost pump inlet submerged in fuel.

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  • 46. 

    You can determine whether the tank scavenge system on cargo aircraft is operating properly by checking the

    • Fuel quantity indicators

    • Sump low lights

    • Fuel pressure indicators and the fuel quantity indicators

    • Sump low lights and fuel quantity indicators

    Correct Answer
    A. Sump low lights and fuel quantity indicators
    Explanation
    To determine whether the tank scavenge system on a cargo aircraft is operating properly, it is necessary to check the sump low lights and fuel quantity indicators. The sump low lights indicate if there is a low level of fuel in the tank, which could be a sign of a problem with the scavenge system. Additionally, the fuel quantity indicators provide information about the amount of fuel in the tank, allowing for further assessment of the system's functionality. By monitoring both the sump low lights and fuel quantity indicators, one can ensure that the tank scavenge system is operating as intended.

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  • 47. 

    On a cargo aircraft, how much fuel must be present in a tank to perform a scavenge system operational check?

    • 6,000 lbs

    • 12,000 lbs

    • 18,000 lbs

    • 24,000 lbs

    Correct Answer
    A. 12,000 lbs
    Explanation
    The scavenge system is a process used to remove residual fuel from tanks in order to prevent contamination. To perform an operational check of the scavenge system on a cargo aircraft, a certain amount of fuel must be present in the tank. In this case, the correct answer is 12,000 lbs, indicating that this is the minimum amount of fuel required for the scavenge system operational check.

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  • 48. 

    Which situation will cause the tank scavenge system's ejector pumps to not operate at full efficiency?

    • Trapped fuel in surge box.

    • Boost pump inlet screen clogged.

    • Jet pump control inoperative.

    • Low boost pump pressure.

    Correct Answer
    A. Boost pump inlet screen clogged.
    Explanation
    If the boost pump inlet screen is clogged, it will restrict the flow of fuel into the ejector pumps, causing them to not operate at full efficiency. The boost pump is responsible for supplying fuel to the ejector pumps, and if its inlet screen is blocked, it will reduce the fuel flow and hinder the performance of the ejector pumps. Therefore, a clogged boost pump inlet screen is the situation that will cause the tank scavenge system's ejector pumps to not operate at full efficiency.

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  • 49. 

    What effect, if any, would a missing flapper valve have on the operation of the tank scavenge system?

    • None.

    • Undesired fuel would flow into the sump box.

    • Fuel would be allowed to flow out of the surge box.

    • Fuel would be stuck in the sump box.

    Correct Answer
    A. Fuel would be allowed to flow out of the surge box.
    Explanation
    If the flapper valve is missing in the tank scavenge system, fuel would be allowed to flow out of the surge box. The flapper valve is responsible for regulating the flow of fuel in the system. Without it, there would be no barrier to prevent fuel from flowing out of the surge box, leading to a potential fuel leak or loss.

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Quiz Review Timeline (Updated): Mar 21, 2023 +

Our quizzes are rigorously reviewed, monitored and continuously updated by our expert board to maintain accuracy, relevance, and timeliness.

  • Current Version
  • Mar 21, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Mar 22, 2018
    Quiz Created by
    Ffasds78

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