APU Flashcards
1
Q
Where does the APU get its fuel?
A
- AC power AVAIL: Main tank 2, Pump 2 AFT
AC power not AVAIL: DC pump in Main tank 2
2
Q
How can I tell if the APU is running?
A
- EICAS status msg “APU RUNNING”
- APU GEN “AVAIL” light
- Line of APU info on STAT page
3
Q
Can I start the APU in flight?
A
No
4
Q
Can the APU be operated in flight?
A
Yes (pneumatics up to 15,000ft)
5
Q
Can I use the APU generators in flight?
A
No
6
Q
What does the APU gen AVAIL light indicate?
A
APU generator power is acceptable
7
Q
With #1 and #2 APU AVAIL light illuminated, what bus is being powered?
A
#1- Ground Handling Bus #2- Main Deck Cargo Handling Bus
8
Q
What are some of the items on the Ground Handling Bus?
A
- Lower Cargo Handling and Lights
- Fueling System
- Aux. HYD pump 4
9
Q
On the secondary EICAS check, what quantities are you looking for?
A
HYDs- .80
O2- 1200
APU Oil- .55
Eng. Oil- 16 qts
10
Q
When will the APU automatically shut down?
A
whenever a parameter is exceeded
