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28 Cards in this Set
- Front
- Back
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External air leakage from the APU heat shield is allowable?
(True or False) |
True
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In the event of an APU fire, how many possible locations are available to shutdown the APU?
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3
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When number 3 Tank FWD boost pump switch light is not turned on within 2 minutes, APU will appear on the WAP.
(True or False) |
True
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An APU fire is indicated by which of the following?
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MASTER WARNING lights on INSTRUMENT panel, APU is displayed on CUE, LOOP A and LOOP B lights on ENVIR panel, Central Aural Warning System (CAWS) and APU warning horns, FIRE light on APU panel.
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Activation of the APU Off/ARM switchlight on the APU panel will provide an automatic shutdown of the APU.
(True or False) |
True
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When the APU access doors are open, the aircraft mounted fire extinguisher system is not sufficient to extinguish the fire.
(True or False) |
True
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How can the APU be started if the external electrical power is not available?
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Battery power may be used when external power is not available
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Set start control switch on APU panel to start and release and identify which parameters are increasing?
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Exhaust Gas Temperature (EGT) and Revolutions Per Minute (RPM's)
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What area must the operator ensure is clear prior to an APU start?
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Ensure APU inlet and exhaust areas are clear.
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An automatic shutdown occurs when APU EGT exceeds _______ above 95% RPM.
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621º degrees celcius
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When External Power and the APU generator PWR switch is in use the AC TIED light shall go off.
(True or False) |
True
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What action should be taken when the APU fails to speed up during battery start?
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Reset the APU start circuit breakers
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Maximum EGT during APU startup is 485º degrees celcius.
(True or False) |
False
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The APU Start Control Switch is spring loaded to the run position.
(True or False) |
True
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To prevent injury to personnel or damage to equipment, do not operate the APU under the following?
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With the fire detection system loop A and loop B inoperative
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The APU fuel consumption per hour is _______
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500 lbs per hour
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After setting the APU Start Control switch to start position, what EGT indication are you looking for?
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EGT increases and stabilizes
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An automatic shutdown occurs when the APU RPM exceeds_________?
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104%
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What are the indications of a successful APU loop A and loop B test on the enviornmental panel?
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Loop A and Loop B lights come on, CAWS sounds, Master warning press to reset lights on glareshield comes on, Fire light on APU comes on, WAP displays APU
(ALL OF THE ABOVE) |
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The APU PWR switch on the electrical panel shall remain on until the APU is completely shutdown.
(True or False) |
True
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What does a HIGH light and an automatic shutdown of the APU during normal operations indicate?
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Overspeed Condition
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Press and hold which switch light to test all lights and digital indicators?
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ANN/DIGT test switchlight
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Allow APU to operate with no load for a minumum of _____ prior to shutdown.
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2 minutes
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What is the position of the APU off/arm switchlight during normal APU operation on overhead PNL?
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OFF/raised
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What is the APU starter motor duty cycle?
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Do not exceed 3 starts or attempts in one hour with a minimum of one minute between starts of attempts.
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Where are the 3 APU emergency shutdown locations?
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Cockpit, loadmaster, SPR
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What are the cockpit APU emergency shutdown procedures?
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Press OFF/ARM, lift and press AGENT/DISCH, press 3 Tank FWD, set START CONTR switch to OFF, open APU CTRL PWR/PSDAU 1 (C15), set EXT PWR switch to OFF, set BATT switch of OFF, shutdown generator set
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What are the APU emergency shutdown procedures for the loadmaster and SPR locations?
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Place FIRE CONTROL on APU FIRE pnl to OFF/SILIENCE then to AGENT ARM
Raise guard, set AGENT DISCH to DISCH |
