APU Flashcards
Kva rating
90 kva thereforer sufficient to power entire ac
APU start limit altitude for ground start and operation
-2,000 up to 14,600ft
APU bleed air supply altitude and start limit on battery
Both 25k
APU supplies what
AC power 115b 90kva
Bleed air (up to 25k)
Fuel source
TK 3
Battery start Tk 4 (AC ESS powers 6 seconds earlier than number 3) plus x-feed 3+4
At what N speed does available on here
95%
Which battery used APU start
Batt 2 - 1 attempt
Where can you shut down the APU
FD
LMWS
Refuel panel
Ground power panel
How thin should the EGT light up
Within 45 secs
When you can you press the APU start button
When flap moving on SD
When do you start the stopwatch for APU start
When flap open on SD
APU start limits
1 start no cool
2 starts <5 mins 30 min
3 starts- 60 min
APU operating envelope
-2,000 - 14,600 for ground operations for ground start and operation
Up to what height can APU supply bleed air
25,000