APU

Question 1

Generator load limit

Answer 1

Sundstrand = 1.0

PATS = .67

Question 2

APU start limit

Answer 2

1 = 1min on, 2min off
2 = 1min on, 2min off
3 = 1min on, 2min off

Question 3

What happens if APU is left on during takeoff?

Answer 3

Auto shut down

Question 4

When must the APU fire detect test be performed?

Answer 4

Prior to APU start

Question 5

Do the cockpit and cabin auto/man AC modes also control temp using APU bleed?

Answer 5

Yes

Question 6

If the YELLOW starter and GREEN run advisory lights illuminate after APU start, what is the pilots action?

Answer 6

Remove APU power

Question 7

Which buses are powered by the APU?

Answer 7

All DC buses

Question 8

What happens to the APU bleed valve of CABIN DUCT HOT or FLT COMP DUCT HOT caution lights illuminate?

Answer 8

APU bleed valve closes

Question 9

What is the meaning of the yellow WRN advisory light on APU Gen switch?

Answer 9

APU off line or failed

Question 10

When is APU fuel supply available for use?

Answer 10

When the APU power switch is pushed

Question 11

What is indicated by illumination of RBY OHT advisory light?

Answer 11

Rear bay where APU located has over heated

Question 12

Three conditions that cause APU caution light illumination?

Answer 12

APU shut down by ESU due malfunction or fire

APU fire detection test conducted

APU Gen not online or failed