APU

Question 1

1 | What does the green AVAIL light on the APU START pushbutton indicate? [ FCOM-DSC-49-20 ]

Answer 1

º APU N is above 99.5% or 2 secs after N reaches 95%

Question 2

2 | With the APU green AVAIL light ON and the EXT PWR green AVAIL light on, which system is powering the aircraft? [ FCOM-DSC-24-10-30-10, FCOM-DSC-24-20 ]

Answer 2

º APU

Question 3

3 | What does an amber FAULT light in the APU MASTER SW pushbutton indicate? [ FCOM-DSC-49-20 ]

Answer 3

º The Electronic Control Box (ECB) commanded an auto shutdown of the APU

Question 4

4 | How long should you wait to push the APU START pushbutton after engaging the APU MASTER switch?
[ FCOM-PRO-NOR-SOP-08 ]

Answer 4

º 3 sec

Question 5

5 | What does an amber FAULT light in the APU BLEED pushbutton indicate? [ FCOM-DSC-36-20 ]

Answer 5

º An APU bleed leak