APU

Question 1

The APU is limited to

Answer 1

ground use only

(PTM pg6-1)

Question 2

What does the APU provide?

Answer 2

Electrical power
Pneumatic/bleed air

Question 3

What will happen in the event of an APU fire?

Answer 3

a horn will sound, the APU will shutdown and automatically dispense Halon extinguishing agent

Question 4

The APU Fire Push S/I is wired directly to the right Emergency Hot Bus and will

Answer 4

activate when pushed even though the aircraft batteries may be off

Question 5

The pilot must wait ___ in order to complete the system BIT check before starting the APU

Answer 5

10 seconds after depressing the APU Master switch

Question 6

After selecting the APU Bleed switch “ON,” there will be _____ before the white “ON” is illuminated in the switch indicator

Answer 6

a short delay of several seconds

(PTM 6-9)

Question 7

If the APU Fan Fail light in the tailcone access area illuminates, can the pilot attempt to reset it?

Answer 7

yes

Question 8

If the APU Fan Fail light in the tailcone access area is illuminated and cannot be reset, can the APU still be used?

Answer 8

Yes, only if the ramp temperature is 100° F (38° C) or less

PTM 6-5

Question 9

During normal APU shutdown, the operator should wait ( ) before turning off the APU Master switch allowing for shutdown and associated BIT checks

Answer 9

30 seconds

Question 10

How much fuel does the APU burn?

Answer 10

approximately 100 lb per hour

Question 11

If the blue APU FAIL/FAULT light is illuminated during preflight, can the APU still be used?

Answer 11

Yes

PTM 6-13

Question 12

If the APU ADD OIL light is illuminated during preflight, can the APU still be used?

Answer 12

Yes

PTM 6-13

Question 13

If the APU OIL LOW light is illuminated during preflight, can the APU still be used?

Answer 13

Yes, but the operator has 5 hours of operation until oil must be added to the APU gearbox

PTM 6-13

Question 14

If the APU does an uncommanded shutdown, what must then take place?

Answer 14

a visual inspection prior to takeoff

AFM 4-12

Question 15

The amber APU FAIL CAS message is present and cannot be cleared, can you take off?

Answer 15

No

AFM 4-12

Question 16

Which wing tank does the APU burn fuel from?

Answer 16

the right wing tank only

Question 17

The ( ) will automatically activate and remain on while the APU is running

Answer 17

Right Standby pump

Question 18

Waiting period between APU start attempts

Answer 18

First - 1 min
Second - 2 mins
Third - 15 mins

Question 19

Maximum continuous amperage on the APU generator

Answer 19

300 amps