General OPS: AC Power/APU

Question 1

When should External AC Power be used?

Answer 1

When aircraft is at the Gate.

Question 2

At what point should External AC power be removed?

Answer 2

10 minutes prior to pushback

Question 3

A powered aircraft should not be left unattended for how long?

Answer 3

5 minutes

Question 4

When should the APU be started on the ground?

Answer 4

10 minutes prior to pushback

Question 5

When should the APU be started after landing?

Answer 5

• Time until departure is less than 30 minutes
• Environmental conditions require APU Bleed air
• External AC power is unavailable at the gate

Question 6

How long should you wait before establishing APU Bleed air on the ground?

Answer 6

2 minutes

Question 7

What APU starting procedure is used under extremely cold temps?

Answer 7

Momentarily select START/STOP first, then momentarily select PWR/FUEL. Resume normal start procedures

Question 8

What is the required bleed configuration for FFOD takeoffs?

Answer 8

Engine bleeds shall be closed

Question 9

When would you operate the APU in flight?

Answer 9

• PAX comfort
• CRJ200 Missed approach perf with wing/cowl anti-ice ON
• Abnormal or Emergency procedure

Question 10

How are bleeds established with the engine off?

Answer 10

• L 10th Stage: Closed
• APU LCV: Open
• 10th Stage ISOL Valve: Open
• R 10th Stage: Closed

Question 11

When APU shutdown, when can the APU GEN remain in the ON position?

Answer 11

Engines operating