CRJ 900 Systems APU

Question 1

The APU is equipped with a ____ generator.

Answer 1

40 KVA

Question 2

The APU supplies pneumatic power for

Answer 2

Main engine starts and air conditioning

Question 3

The APU ECU controls the APU during

Answer 3

All phases of operation

Question 4

The APU control system ensures priority is given to

Answer 4

Electric loads

Question 5

Pressurized fuel is supplied to the APU by the

Answer 5

APU fuel pump

Question 6

What is the purpose of the internal bypass valve

Answer 6

Allows the APU to continue to run if APU pump fails

Question 7

APU RPM is displayed on the

Answer 7

EICAS status page

Question 8

APU bleed air is controlled by a mondulating

Answer 8

APU LCV

Question 9

APU bleed pressure readout can be monitored on

Answer 9

EICAS “ECS” synoptic page

Question 10

APU “AVAIL” will illuminate at

Answer 10

99% RPM and 2 seconds later

Question 11

The APU gauges (RPM and EGT) appear on EICAS when

Answer 11

APU POWER/FUEL switch/light pressed in

Question 12

“APU OVERSPEED” warning message is displayed when RPM exceeds

Answer 12

106%

Question 13

Where is the APU located?

Answer 13

tail cone

Question 14

APU intake door is located

Answer 14

upper right hand (rear side of aircraft)

Question 15

APU secondary function(s)

Answer 15

1. Supplies bleed air for air condition

2. Supplies air for engine starting

Question 16

If APU door position is unknown or opened, airspeed is restricted to

Answer 16

220 Kias if the APU is not operating

Question 17

The APU door position is displayed on the

Answer 17

EICAS status page