APU

Question 1

If an APU Fire is detected on the ground:

Answer 1

The APU automatically shuts down and the halon extinguisher is automatically discharged.

Question 2

The APU may be started and operated in flight. Which of the following is also true?

Answer 2

The APU may be operated up to the maximum certified pressure altitude of 39,000 feet.

Question 3

You have just selected the APU MASTER SW pb to ON. You now select the APU START pb to ON. Which statement is correct?

Answer 3

The ECB will not engage the electric starter until the power-up self test is completed satisfactorily and the air intake flap is fully open.

Question 4

How do you start the APU?

Answer 4

Press the APU MASTER SW pushbutton, followed 3 seconds later, by the APU START pushbutton.

Question 5

Normally, how do you shut down the APU?

Answer 5

Press the APU MASTER SW pushbutton only.

Question 6

The APU generator has the same power output as an engine generator.

Answer 6

True

Question 7

Fuel for APU operation is normally supplied from:

Answer 7

The left fuel feed line, through the engine 1 feed line.

Question 8

How do you start the APU?

Answer 8

Press the APU MASTER SW pushbutton, followed 3 seconds later, by the APU START pushbutton.

Question 9

Normally, how do you shut down the APU?

Answer 9

Press the APU MASTER SW pushbutton only.

Question 10

The APU Systems Display shows that the APU is providing bleed air.

Answer 10

True

Question 11

The APU bleed duct is connected to the right side of the aircraft’s pneumatic system.

Answer 11

False

Question 12

Which APU status is correctly displayed?

Answer 12

APU Shutdown

Question 13

Which APU status is correctly displayed?

Answer 13

APU operating, supplying bleed air and electrical power

Question 14

Which APU status is correctly displayed?

Answer 14

APU operating, supplying electrical power only