Dash 1 - APU

Question 1

Which fwd fuel boost pump supplies fuel to the APU

Answer 1

3

Question 2

With an illum LOW press light, an APU/MC will illum after

Answer 2

120 sec

Question 3

During start, gravity fed fuel from which tank is used to fuel the APU

Answer 3

3 - After start, turn on #3 fwd bost pump

Question 4

Place the START CONT switch to RUN for ___sec to verify 0 RPM

Answer 4

2

Question 5

If start is aborted and switched to off RPM must return to 0 w/in___seconds

Answer 5

5 sec - Aircraft may be flown without APU if RPM is zero

Question 6

If RPM does not return to 0, pull CB OVHD__

Answer 6

C15

Question 7

RPM indicator may flash a value of approx ___ once or twice after switch is released to run

Answer 7

85%

Question 8

If the indicator flashes ___ times or more, perform APU abnormal start procedure

Answer 8

5

Question 9

At ___, the EGT should start to wind down

Answer 9

50%

Question 10

Ignition occurs at what RPM ( evidenced by EGT increase)

Answer 10

7%

Question 11

What is the normal operating temp

Answer 11

375 deg C

Question 12

Ignition is deenergized at ____ and 2 seconds later the APU gen and bleed air are enabled

Answer 12

95%

Question 13

The APU stabalizes at aprox ____

Answer 13

100% RPM

Question 14

Approx ___ seconds after reaching 95%, the APU AVAIL light illum

Answer 14

2 sec

Question 15

At max load, what will the EGT of the APU be

Answer 15

600 deg C

Question 16

The APU inlet door will not close until RPM is less than

Answer 16

7%

Question 17

Allow the APU to operate for a minimum of ___ before switching it off

Answer 17

2 min

Question 18

APU shutdown is initiated when the ECU detects an overspeed of

Answer 18

104%

Question 19

The APU DOOR DISAGREE mssg on the WAP may illum for up to

Answer 19

15 sec

Question 20

If the APU is still running __ sec after the overspeed, the ECU will close the APU fuel valve

Answer 20

20 sec

Question 21

When less than __%, the fuel fire shutoff valve on Rt wing spar and APU door will close

Answer 21

7%