Trivia Quiz : ATM And APU Emergency Shutdown Procedures!

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  • 1/39 Questions

    When operating the APU / ATM system in hangers not equipped with automatic Fire Suppression System (FSS), two 150 lbs Halon fire extinguishers are required one near running APU / ATM and a major CRASH/RIRE/RESUE (CFR) vehicle must be on standby outside the hangar.

    • True
    • False
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About This Quiz

This is a trivia quiz for the Atm and Apu emergency shutdown procedures course we covered this week. It was designed to refresh the things we covered so far about the topic and what would be expected of a practitioner during this period. Think you can tackle it? Take up the test below and get to find out. All the best!

Trivia Quiz : ATM And APU Emergency Shutdown Procedures! - Quiz

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  • 2. 

    Where are the APU fire extinguisher bottles located on the aircraft?

    • In the lower aft corner of #4 MLG wheel well

    • In the lower aft corner of #2 MLG wheel well

    • Inboard side of #2 and #3 engine pylons

    • In the right aft APU compartment

    Correct Answer
    A. In the lower aft corner of #4 MLG wheel well
    Explanation
    The APU fire extinguisher bottles are located in the lower aft corner of the #4 MLG (Main Landing Gear) wheel well.

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  • 3. 

    What should you do if the "GEN FAIL" light comes on?

    • Start up alternate APU

    • Switch "BATT" to off

    • Shut down immediately

    Correct Answer
    A. Shut down immediately
    Explanation
    If the "GEN FAIL" light comes on, it indicates a failure in the generator system. Continuing to operate the system could cause further damage or potentially lead to a more serious issue. Therefore, the best course of action is to shut down immediately to prevent any potential harm or damage.

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  • 4. 

    To operate the ATM's, PTU's or the engines pumps the #2 and #3 main fuel tanks must have a minimum of ______ lbs of fuel to provide case drain fluid cooling for the hydraulic systems.

    • 2000 lbs

    • 4000 lbs

    • 4500 lbs

    • 6500 lbs

    Correct Answer
    A. 4500 lbs
    Explanation
    To operate the ATM's, PTU's or the engine pumps, a minimum of 4500 lbs of fuel is required in the #2 and #3 main fuel tanks. This amount of fuel is necessary to provide case drain fluid cooling for the hydraulic systems.

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  • 5. 

    During the operation of the ATM, a qualified operator will be located where?

    • At the pilot's position

    • At the loadmaster's forward control panel

    • At the flight engineer's station

    • At the APU/ATM compartment door

    Correct Answer
    A. At the flight engineer's station
    Explanation
    During the operation of the ATM (Assault Tactical Mobility), a qualified operator will be located at the flight engineer's station. This position is responsible for monitoring and controlling the aircraft's systems, including the engines, fuel, and electrical systems. The flight engineer works closely with the pilot and provides assistance and support during the flight. They ensure the smooth operation of the aircraft and are trained to handle any technical issues that may arise during the mission.

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  • 6. 

    What is the location of the APU fire extinguisher bottle select switches?

    • Pilot's center instrument panel

    • Flight engineer panel and loadmaster forward control panel

    • Loadmaters forward control panel and pilot's center panel

    • Flight engineer's panel and loadmaster aft control panel

    Correct Answer
    A. Flight engineer panel and loadmaster forward control panel
    Explanation
    The correct answer is Flight engineer panel and loadmaster forward control panel. The APU fire extinguisher bottle select switches are located on both the flight engineer panel and the loadmaster forward control panel.

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  • 7. 

    On INBD ELEVATOR panel ensure left system 3 and right system 2 hydraulic power switches are set to OFF before pressurizing the number 2 and number 3 hydraulic systems.

    • True

    • False

    Correct Answer
    A. True
    Explanation
    The explanation for the given correct answer is that in order to pressurize the number 2 and number 3 hydraulic systems on the INBD ELEVATOR panel, it is necessary to ensure that the left system 3 and right system 2 hydraulic power switches are set to OFF. This step is important to avoid any potential issues or malfunctions during the pressurization process. Therefore, the statement "True" indicates that this is the correct procedure to follow.

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  • 8. 

    For cooling purposes, the APU should be run unloaded for ________ prior to shutting down?

    • 30 seconds

    • 1 minute

    • 2 minutes

    • 3 minutes

    Correct Answer
    A. 2 minutes
    Explanation
    The APU should be run unloaded for 2 minutes prior to shutting down for cooling purposes. Running the APU unloaded helps to reduce the temperature of the system before shutting it down, preventing any potential damage or overheating. This allows the APU to cool down gradually and ensures that it is in a safe state before shutting off completely.

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  • 9. 

    Emergency Procedures What will be indicated if an APU fire occurs during APU operation?

    • A fire lilght on the pilot's enunciator panel flashing and the audible warning sounds.

    • A steady lilgtht in applicable APU fire pull handles; an APU fire light on the pilot's enunciator panel flashes and the audible horn sounds.

    • A flashing light on/ in an APU fire handle and a buzzing sound.

    • A steady FSS fire light and PTU zone light on at  the Flight Eengeneer's panel and audible horn sounding.

    Correct Answer
    A. A steady lilgtht in applicable APU fire pull handles; an APU fire light on the pilot's enunciator panel flashes and the audible horn sounds.
    Explanation
    During APU operation, if an APU fire occurs, a steady light will be indicated in the applicable APU fire pull handles. Additionally, an APU fire light on the pilot's enunciator panel will flash and an audible horn will sound.

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  • 10. 

    What is to be done if the battery voltage check shows less than 22.5 Volts in a battery?

    • The battery shall be replaced or the battery electrical plug shall be disconnected.

    • The battery should be charged from external power before it is used.

    • The battery should be monitored closely during APU operation.

    • The battery shall be left connected but not used during APU operation

    Correct Answer
    A. The battery shall be replaced or the battery electrical plug shall be disconnected.
    Explanation
    If the battery voltage check shows less than 22.5 Volts in a battery, the correct action to take is to either replace the battery or disconnect the battery electrical plug. This is necessary because a battery with a voltage lower than 22.5 Volts may not provide sufficient power for proper functioning and could potentially cause malfunctions or failures in the system it is powering. Therefore, replacing the battery or disconnecting the electrical plug ensures that a fully charged and functional battery is used.

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  • 11. 

    If the APU GEN FAIL light comes on during APU operations, what must you do?

    • Place generator switch to off position

    • Select the other APU generator

    • Place gen control switch to off and continue to operate

    • Immediately shut down the APU

    Correct Answer
    A. Immediately shut down the APU
    Explanation
    If the APU GEN FAIL light comes on during APU operations, it indicates a failure in the APU generator. This failure can lead to a loss of power supply from the APU, which can be critical for the aircraft's operations. Therefore, the appropriate action to take in this situation is to immediately shut down the APU to prevent any further damage or potential safety risks.

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  • 12. 

    APU warm-up time prior to applying load

    • 2 minutes

    • 5 minutes

    • 15 minutes

    Correct Answer
    A. 2 minutes
    Explanation
    The correct answer is 2 minutes because the APU (Auxiliary Power Unit) requires a warm-up time before it can handle any load. This warm-up time allows the APU to reach its optimal operating temperature and ensures that it is ready to provide power efficiently. A warm-up time of 2 minutes is sufficient for the APU to stabilize and be able to handle the load effectively.

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  • 13. 

    Emergency Procedures In the event an APU /ATM fire occurs during operation, after pulling the APU fire handle, why must you wait five seconds before placing the battery switch off?

    • Allow time for the fire bottle to discharge.

    • Allow time for the fuel valves to open.

    • Allow time for the fuel valves to close.

    • Allow time for hydraulic suction and pressure line shutoff valves to close.

    Correct Answer
    A. Allow time for the fuel valves to close.
    Explanation
    After pulling the APU fire handle, it is necessary to wait five seconds before placing the battery switch off in order to allow time for the fuel valves to close. This is important because closing the fuel valves will cut off the fuel supply to the fire, helping to extinguish it. By waiting for the fuel valves to close, the risk of the fire spreading or reigniting is minimized.

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  • 14. 

    What must be available if the APU is to be operated with the APU compartment door open?

    • A fireguard with an adequate fire extingusher must be stationed at the APU compartment

    • Crash/fire/rescue (CFR) standing by the nose of the aircraft

    • A fireguard must be available with a two way radio and a APU tester

    • A fireguard with an adequate communication system must be at the compartment

    Correct Answer
    A. A fireguard with an adequate fire extingusher must be stationed at the APU compartment
    Explanation
    In order to operate the APU with the APU compartment door open, it is necessary to have a fireguard present at the APU compartment. This fireguard should have an adequate fire extinguisher to handle any potential fire hazards that may arise during the operation. The presence of a fireguard with a fire extinguisher ensures that any fire incidents can be promptly and effectively addressed, minimizing the risk of damage or harm.

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  • 15. 

    With either APU generator supplying aircraft power, the operator will find all buses powered.

    • Except number 2 and 3 main ac buses

    • Except the monitor buses

    • Except the dc powered buses

    • Except the number 2 and 3 dc buses

    Correct Answer
    A. Except the monitor buses
    Explanation
    The given statement implies that when either APU generator is supplying power to the aircraft, all buses except the monitor buses will be powered. This means that the number 2 and 3 main AC buses, the DC powered buses, and the number 2 and 3 DC buses will all receive power from the APU generator. However, the monitor buses will not be powered by the APU generator.

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  • 16. 

    With the APU operating, what is the maximum continuous EGT?

    • 691 degress C

    • 715 degrees C

    • 630 degrees C

    • 714 degrees C

    Correct Answer
    A. 691 degress C
    Explanation
    The maximum continuous EGT with the APU operating is 691 degrees C. This means that the APU can operate continuously at this temperature without any risk of overheating or damage. It is important to monitor the EGT to ensure that it stays within the acceptable range to maintain the safe and efficient operation of the APU.

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  • 17. 

    What must be operating before starting the ATM's to recharge the APU start accumulators?

    • System pressure must be 300 psi

    • Bleed manifold pressure must be 50 psi

    • The electric suction boost pumps must be on

    • All power transfer switches must be on

    Correct Answer
    A. The electric suction boost pumps must be on
    Explanation
    Before starting the ATM's to recharge the APU start accumulators, the electric suction boost pumps must be turned on. This is necessary to ensure proper suction and circulation of fuel to the APU start accumulators, allowing them to be recharged effectively. The boost pumps help maintain the required fuel pressure for the APU start accumulators, ensuring their proper functioning.

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  • 18. 

    Emergency Procedures If an APU fire occurs during operation and the APU fire extinguisher bottle(s) does not extinguish the fire, how can a fire extinguisher be discharged into the APU compartment?

    • Through the APU compartment push-in door.

    • Through the APU compartment access door.

    • Through the APU inlet door.

    • Through the ATM access service door.

    Correct Answer
    A. Through the APU compartment push-in door.
    Explanation
    The correct answer is through the APU compartment push-in door. This is because the APU compartment push-in door is specifically designed to allow access to the APU compartment in case of emergencies, such as a fire. By discharging a fire extinguisher through this door, it can effectively reach the APU compartment and help extinguish the fire.

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  • 19. 

    Normal ATM pumps pressure is__________.

    • 2800-3000 PSI

    • 2850-3150 PSI

    • 2850-3050 PSI

    • 2800-3150 PSI

    Correct Answer
    A. 2850-3150 PSI
    Explanation
    The correct answer is 2850-3150 PSI. This range represents the normal pressure for ATM pumps.

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  • 20. 

    To prevent APU hot starts the accumulator pressure should be not less than _________ PSI.

    • 2700 psi

    • 3000 psi

    • 2800 psi

    • 3150 psi

    Correct Answer
    A. 2800 psi
    Explanation
    To prevent APU hot starts, it is necessary to maintain a minimum accumulator pressure. The correct answer is 2800 psi. This pressure ensures that there is sufficient fuel flow and ignition for a successful start without causing excessive heat buildup. Lower pressures may result in inadequate fuel flow, leading to a hot start where the APU combustor ignites before the fuel-air mixture is properly established. Higher pressures may not be necessary and could potentially cause other issues. Therefore, maintaining an accumulator pressure of at least 2800 psi is crucial for preventing APU hot starts.

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  • 21. 

    Start time for APU

    • The "ON SPEED" light shall come on within 60 seconds (0* F & above) or 30 seconds (-65 F to 0* F) after the APU "START" light comes on

    • The "ON SPEED" light shall come on within 20 seconds (715*C to 824*C) or 10 seconds (-65 F to 0* F) after the APU "START" light comes on

    • The "ON SPEED" light shall come on within 30 seconds (0* F & above) or 60 seconds (-65 F to 0* F) after the APU "START" light comes on

    Correct Answer
    A. The "ON SPEED" light shall come on within 30 seconds (0* F & above) or 60 seconds (-65 F to 0* F) after the APU "START" light comes on
    Explanation
    The correct answer states that the "ON SPEED" light should come on within 30 seconds if the temperature is 0°F and above, or within 60 seconds if the temperature is -65°F to 0°F, after the APU "START" light comes on. This means that the "ON SPEED" light indicates that the APU has reached its operating speed within the specified time frame, ensuring that it is ready to be used.

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  • 22. 

    Which hydraulic systems are used to pressurize the APU accumulators?

    • Left APU accumulator from #4 system and the right APU accumulator from #1 system.

    • Left APU accumulator from #2 system and the right APU accumulator from #3 system.

    • Left APU accumulator from #1 system and the right APU accumulator from #4 system.

    • Left APU accumulator from #3 system and the right APU accumulator from #2 system.

    Correct Answer
    A. Left APU accumulator from #1 system and the right APU accumulator from #4 system.
    Explanation
    The left APU accumulator from #1 system and the right APU accumulator from #4 system are used to pressurize the APU accumulators.

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  • 23. 

    How long can an ATM operate without normal hydraulic pressure?

    • 5 Seconds

    • 15 Seconds

    • 30 Seconds

    • 60 Seconds

    Correct Answer
    A. 15 Seconds
    Explanation
    An ATM can operate without normal hydraulic pressure for up to 15 seconds. This means that if there is a temporary loss of hydraulic pressure, the ATM will still be able to function for a short period of time before it completely stops working. This could be due to a power outage or a malfunction in the hydraulic system. However, after 15 seconds, the lack of hydraulic pressure will likely cause the ATM to shut down and become inoperable.

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  • 24. 

    During normal operation, the APU generator ac load meter should not exceed which limit?

    • Loadmeter reading 0.5

    • Loadmeter reading 1.0

    • Loadmeter reading 1.25

    • Loadmeter reading 1.50

    Correct Answer
    A. Loadmeter reading 1.0
    Explanation
    During normal operation, the APU generator ac load meter should not exceed a reading of 1.0. This limit is set to ensure that the load on the APU generator does not exceed its capacity and cause damage or failure. If the load meter reading exceeds 1.0, it indicates that the load on the generator is too high and corrective actions should be taken to reduce the load and prevent any potential issues.

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  • 25. 

    During APU start, which of the following EGT reading would indicate a malfunction?

    • 630-691 degree C

    • 691-715 degree C

    • 716-824 degree C

    • 325-575 degree C

    Correct Answer
    A. 716-824 degree C
    Explanation
    During APU start, the EGT (Exhaust Gas Temperature) reading usually ranges between 630-691 degree C. However, if the EGT reading goes beyond this range and reaches 716-824 degree C, it indicates a malfunction. This higher EGT reading suggests that there may be an issue with the APU, such as a fuel problem or a malfunctioning component. It is important to address this malfunction to ensure the safe operation of the APU.

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  • 26. 

    What effect would have the aircraft on jacks, or two main landing gear cross knelled, or #1 touchdown relay circuit breaker pulled have on the APU?

    • The audible horn will not sound

    • The APU door will not open fully and the audible horn will not sound.

    • The APU low oil pressure switch will be overridden prohibiting low oil prssure protection and the APU fire warning audible horn will not sound.

    • The APU low oil pressure switch will be overridden, prohibiting low oil protection: the APU door will not open fully:  the APU fire warning horn wil not sound.

    Correct Answer
    A. The APU low oil pressure switch will be overridden prohibiting low oil prssure protection and the APU fire warning audible horn will not sound.
    Explanation
    If the aircraft is on jacks, or if the two main landing gear cross knelled, or if the #1 touchdown relay circuit breaker is pulled, the APU low oil pressure switch will be overridden. This means that the low oil pressure protection for the APU will be disabled. Additionally, the APU fire warning audible horn will not sound in this situation.

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  • 27. 

    On the initial start, with the compartment door open following APU fuel/oil system component removal or installation, a fireguard with a serviceable fire extinguisher will be required to leak check the APU during start. His/Her duties are_______________________________. 

    • The fireguard will be positioned at the APU station and will establish communication with the flight engineer's station.

    • During the start, the fireguard will closely examine th APU for evidence of leaks (fuel, oil, or hydraulic).

    • If any leaks or substandard conditions are noted, the fireguard will notify the flight engineer's station. The start will be aborted and the leaks or substandard conditions corrected prior to attempting another start.

    • The fireguard will comply with all the above.

    Correct Answer
    A. The fireguard will comply with all the above.
    Explanation
    The fireguard's duties include positioning themselves at the APU station, establishing communication with the flight engineer's station, closely examining the APU for leaks or substandard conditions, notifying the flight engineer's station if any issues are found, and aborting the start if necessary. The correct answer states that the fireguard will comply with all of these duties.

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  • 28. 

    What is the APU's max start time from the start light to "ON SPEED" 0 degrees F and above?

    • 80 Seconds

    • 60 Seconds

    • 30 Seconds

    • 20 Seconds

    Correct Answer
    A. 30 Seconds
    Explanation
    The APU's max start time from the start light to "ON SPEED" at 0 degrees F and above is 30 seconds.

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  • 29. 

    Operating minimum time to fully charge left and right start accumulators are

    • 2 minutes

    • 5 minutes

    • 15 minutes

    Correct Answer
    A. 5 minutes
    Explanation
    The operating minimum time to fully charge the left and right start accumulators is 5 minutes. This means that it takes a minimum of 5 minutes to charge both accumulators to their maximum capacity.

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  • 30. 

    What position must the battery switch be in for a fire hanle shutdown?

    • Must be in NORM or STBY position, if modified by TCTO 1C-5-736 ON position.

    • Must be in NORM position, if modified by TCTO 1C-5-736 ON position.

    • Must be in the OFF position, if modified by TCTO 1C-5-736 ON position.

    • Must be in EXTERNAL PWR position, if modified by TCTO 1C-5-736 ON position.

    Correct Answer
    A. Must be in NORM or STBY position, if modified by TCTO 1C-5-736 ON position.
    Explanation
    The battery switch must be in the NORM or STBY position if it has been modified by TCTO 1C-5-736 to the ON position. This suggests that the TCTO 1C-5-736 modification allows for the battery switch to be in either the NORM or STBY position when the ON position is selected.

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  • 31. 

    Why must one battery be serviceable and connected to the battery bus during operation of an APU?

    • To provide emergency power for radio operations.

    • To provide power for APU fire extinguishing and amergency APU shutdown.

    • To provide power for APU fire extinguishing and emergency radio operations.

    • To provide emergency radio operation an power for emergency APU shut down.

    Correct Answer
    A. To provide power for APU fire extinguishing and amergency APU shutdown.
    Explanation
    During the operation of an APU (Auxiliary Power Unit), it is essential to have one battery that is serviceable and connected to the battery bus. This is necessary to provide power for APU fire extinguishing and emergency APU shutdown. In the event of a fire on the APU or the need to shut it down immediately, having a battery connected to the bus ensures that there is a reliable power source for these critical functions. Without a serviceable battery connected, the APU fire extinguishing system may not be able to function properly, which could lead to a dangerous situation. Additionally, an emergency APU shutdown may be required in certain situations, and having a connected battery ensures that this can be done effectively.

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  • 32. 

    When starting an APU without external power (battery start) what equipment must be available?

    • A fireguard with a portable fire extinguisher.

    • A fireguard with a two way radio.

    • A fire truck shall stand by until power is available.

    • A fire truck shall stand by during starting and single APU operation.

    Correct Answer
    A. A fire truck shall stand by during starting and single APU operation.
    Explanation
    When starting an APU without external power (battery start), it is necessary to have a fire truck stand by during starting and single APU operation. This is because starting an APU involves the use of fuel and there is a potential risk of fire. Having a fire truck on standby ensures quick response in case of any fire-related emergencies during the APU start-up and operation.

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  • 33. 

    During APU start, what is the maximum duration for transient EGT between 715E and 824E C?

    • 10 Seconds.

    • 20 Seconds.

    • 30 Seconds.

    • No limit.

    Correct Answer
    A. 20 Seconds.
    Explanation
    During the start of an APU (Auxiliary Power Unit), there is a maximum duration for the transient EGT (Exhaust Gas Temperature) between 715E and 824E C, which is 20 seconds. This means that the EGT can reach and stay within this temperature range for a maximum of 20 seconds during the APU start process.

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  • 34. 

    How long can the APU operate with the EGT reading between 691E and 746E C?

    • 30 Seconds

    • 1 Minute

    • 2 Minutes

    • 3 Minutes

    Correct Answer
    A. 3 Minutes
    Explanation
    The APU can operate with the EGT (Exhaust Gas Temperature) reading between 691E and 746E C for a maximum of 3 minutes. This means that if the EGT exceeds these temperatures, the APU should be shut down or cooled down to prevent any damage or malfunction.

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  • 35. 

    AC system panel AC Voltmeter should read

    • 115 +/- 3

    • 110 +/- 2

    • 112 to 118

    Correct Answer(s)
    A. 115 +/- 3
    A. 112 to 118
    Explanation
    The correct answer is 115 +/- 3. This means that the AC Voltmeter should read a value between 112 and 118, with the ideal reading being 115 volts. This range allows for a small margin of error, ensuring that the voltage is within an acceptable range for the AC system panel.

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  • 36. 

    What should system 1 and/or system 4 gauge indicate during ATM/APU operations?

    • 2,850 to 3,150 PSIG

    • 3000 +/-150 PSIG

    • 2000 +/- 150 PSIG

    Correct Answer(s)
    A. 2,850 to 3,150 PSIG
    A. 3000 +/-150 PSIG
    Explanation
    System 1 and/or system 4 gauges should indicate a pressure range of 2,850 to 3,150 PSIG and a specific pressure of 3000 +/- 150 PSIG during ATM/APU operations.

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  • 37. 

    AC system panel CPS frequency meter should read

    • 300Hz +/-3

    • 400Hz +/-6

    • 394 to 406 Hz

    Correct Answer(s)
    A. 400Hz +/-6
    A. 394 to 406 Hz
    Explanation
    The AC system panel CPS frequency meter should read 400Hz +/-6, which means that the acceptable frequency range is from 394 to 406 Hz. This indicates that the frequency of the AC system should ideally be at 400Hz, but a variation of up to +/-6Hz is permissible. The given answer accurately represents the acceptable range for the CPS frequency meter reading.

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  • 38. 

    Emergency Procedures In the event of an APU / ATM fire, you will notify _______________________________________________________________ and provide the following information.

    Correct Answer(s)
    Ground control/control tower, giving ACRFT tail number, location and type of emergency. Request fire department assistance.
    Explanation
    In the event of an APU/ATM fire, it is important to notify ground control or the control tower immediately. They should be informed of the aircraft's tail number, location, and the type of emergency, in this case, a fire. Additionally, it is necessary to request assistance from the fire department to handle the situation effectively and ensure the safety of everyone involved.

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  • 39. 

    Emergency Procedures If an APU /ATM fire is indicated, write the first three steps in the proper order that must be accomplished by the operator.

    Correct Answer(s)
    Unaffected electrical power source - selected
    Applicable APU fire pull handle - pulled
    With bottle select switch in NORM, applicable agend discharge button - depressed
    Explanation
    The first step in the proper order is to select the unaffected electrical power source. Then, the operator must pull the applicable APU fire pull handle. Finally, with the bottle select switch in NORM, the operator should depress the applicable agent discharge button.

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Quiz Review Timeline (Updated): Mar 16, 2023 +

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

  • Current Version
  • Mar 16, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Aug 22, 2011
    Quiz Created by
    C5_Crewchief
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