C-17 APU OPERATION QUESTIONS AND ANSWERS
When temperature is 32 degrees fahrenheit, or lower, batt sel switch on the
maintenance interface panel shall be set to ______________? - answers - both
Apu system operation shall not be accomplished with open circuit breakers unless
otherwise specified. (t/f) - answers - true
When firex agent discharge 1power circuit breaker on overhead circuit breaker panel,
row e, column 13, is found open, the __________________ switchlight on apu panel
will be inoperative - answers - agent dischpersonnel will position start control switch to
the run position for ___________ second(s) prior to starting apu - answers - two
seconds
An automatic shutdown occurs when apu rpm exceeds _____________? - answers -
104%
What is the position of the apu off/arm switchlight during normal apu operation on the
overhead pnl? - answers - off/raised
The apu pwr switch on the electrical panel shall remain on until after the apu is
completely shutdown (t/f) - answers - true
What does a hot light and an auto matrix shutdown of the apu during normal operation
indicate? - answers - overtemperature condition
In the event of an apu fire, how many possible locations are available to shut down the
apu ? - answers - 3
What is the approximate time for the apu inlet door assembly to open? - answers - 9
seconds
How can the apu be started if external power is not available? - answers - battery power
The apu fuel consumption rate is ________? - answers - 500 pounds per hour
When number 3 tank fwd or aft boost pump switch light is not turned on within two
minutes, apu will be displayed on the wap. (t/f) - answers - true
What is the apu stabilized rpm? - answers - 97%-101%
What does a high light and an automatic shutdown of the apu during normal
Operations indicate? - answers - overspeed condition
When temperature is 32 degrees fahrenheit, or lower, batt sel switch on the
maintenance interface panel shall be set to ______________? - answers - both
Apu system operation shall not be accomplished with open circuit breakers unless
otherwise specified. (t/f) - answers - true
When firex agent discharge 1power circuit breaker on overhead circuit breaker panel,
row e, column 13, is found open, the __________________ switchlight on apu panel
will be inoperative - answers - agent dischpersonnel will position start control switch to
the run position for ___________ second(s) prior to starting apu - answers - two
seconds
An automatic shutdown occurs when apu rpm exceeds _____________? - answers -
104%
What is the position of the apu off/arm switchlight during normal apu operation on the
overhead pnl? - answers - off/raised
The apu pwr switch on the electrical panel shall remain on until after the apu is
completely shutdown (t/f) - answers - true
What does a hot light and an auto matrix shutdown of the apu during normal operation
indicate? - answers - overtemperature condition
In the event of an apu fire, how many possible locations are available to shut down the
apu ? - answers - 3
What is the approximate time for the apu inlet door assembly to open? - answers - 9
seconds
How can the apu be started if external power is not available? - answers - battery power
The apu fuel consumption rate is ________? - answers - 500 pounds per hour
When number 3 tank fwd or aft boost pump switch light is not turned on within two
minutes, apu will be displayed on the wap. (t/f) - answers - true
What is the apu stabilized rpm? - answers - 97%-101%
What does a high light and an automatic shutdown of the apu during normal
Operations indicate? - answers - overspeed condition
