APU

Question 0

Max altitude for starting APU

Answer 0

FL 370

Question 1

Can you run both pack plus electrical on the ground using only APU?

Answer 1

Yes

Question 2

Can you use APU pneumatics in flight?

Answer 2

No

Question 3

Which tank does the APU feed from?

Answer 3

Right fuel tank

Question 4

Are the APU fuel pumps AC or DC?

Answer 4

Both

Question 5

Which battery is used to start the APU?

Answer 5

Aircraft battery

Question 6

When can you expect to see the APU low oil light?

Answer 6

On start. Light should extinguish at 35% but can last as long as 95%

Question 7

When will the APU bleed valve open during APU start?

Answer 7

After the APU has been in operation for 60 seconds

Question 8

Is there an APU cool down period?

Answer 8

Yes, 60 seconds

Question 9

What are the requirements for an APU windmill start?

Answer 9

Below FL300

A/C must be off

Question 10

When will the APU shut down immediately?

Answer 10

ESSENTIAL SHUTDOWN

Question 11

Will the APU shut down during a NON-ESSENTIAL SHUTDOWN?

Answer 11

Not in flight but will shut down at touch down +10 minutes