Study Guide-APU Panel

Question 1

What do you see when you press the APU Master switch?

Answer 1

-Blue ON light on the pb.
-APU page opens, and FLAP OPEN appears when it’s fully open.

Question 2

What is the difference between the blue ON light in the start switch and the green AVAIL light?

Answer 2

The blue ON light appears during the start sequence, the green AVAIL light means APU is on speed and start is completed, APU is available for electric’s and air.

Question 3

With the APU running and supplying bleed air, how do you shut it down.

Answer 3

-APU BLEED pb OFF.
-APU MASTER switch OFF.
-APU will cool down (60-120 sec) and then shuts down.

Question 4

With the APU green AVAIL light ON and the EXT PWR green AVAIL light ON, which system is powering the aircraft?

Answer 4

APU

Question 5

An amber FAULT light in the APU MASTER SW pb indicates?

Answer 5

An APU auto-shutdown has occurred.

Question 6

What does an amber FAULT light in the APU BLEED pb mean?

Answer 6

An APU bleed leak.

Question 7

Can you use APU bleed air in flight?

Answer 7

-Yes.
-Use of APU bleed with Wing Anti-Ice is prohibited.