APU Panel Flashcards
What do you see when you press the APU Master Switch?
o Blue light in PB
o APU page appears and the when fully open, FLAP OPEN appears
What is the difference between the blue ON light in the start switch and the green
AVAIL light?
o The blue ON light appears during the start sequence, the green AVAIL light
means APU is on speed and start is complete, APU avail for electric’s and air.
With the APU running and supplying bleed air, how do you shut it down?
o APU BLEED pb OFF
o APU MASTER SW OFF
o APU will cool down (60-120 seconds) and then shut down
With the APU green AVAIL light ON and the EXT PWR green AVAIL light on, which
system is powering the aircraft?
APU
An amber FAULT light in the APU MASTER SW pb indicates?
o An APU auto shutdown has occurred.
What does an amber FAULT light in the APU BLEED pb mean?
o An APU bleed leak.
Can you use APU bleed air inflight?
o Yes.
o Use of APU Bleed with Wing Anti-Ice is prohibited.
