APU Flashcards
How much oil can can the APU hold?
8.7 quarts
5.7 in the gearbox
3 in the lines
While starting the APU during a move what point must you pass?
Solid red line on the flight line
What are the altitude limitations for using APU for bleed air start?
17000
Wind restrictions for opening APU door?
40 knots
Purpose of the APU?
Provide bleed air for engine starting or air conditioning?
Where does the electrical power to start the APU come from?
1 transfer bus or the airplane main battery
When starting the APU?
Make sure the battery switch is on, or else the APU will automatically shut off
How long should you run the APU prior to using it for bleed air source?
1 full minute
What indication for an APU fire?
APU fire warning light flashes red
How long is the start cycle for the APU?
120 sec
What happens to the fuel when the APU is running?
It is heated to prevent icing
APU emergency procedures
APU fire control switch, confirm, pull and rotate to stop. Hold for 1 sec, APU switch off
Proper steps for starting APU
Check ADB for any existing gripes, talk to MC about starting the APU, check out cranial, PC pouch and radio, check for FOD, grounding strap, chocks, pins, covers, leaks, APU/ stab components and circuit breakers
Proper steps for starting APU
Check ADB for any existing gripes, talk to MC about starting the APU, check out cranial, PC pouch and radio, check for FOD, grounding strap, chocks, pins, covers, leaks, APU/ stab components and circuit breakers
APU pulls fuel from which tank?
1 portside tank