ENGINES AND APU

Question 1

The maximum altitude the APU can be used for Pack operation is _____.

Answer 1

22,000 feet

Question 2

If AC power is not available, the DC pump in the ______ tank provides APU fuel.

Answer 2

left main

Question 3

If the APU starts automatically in flight, it _____.

Answer 3

can be shut down by positioning the selector to ON, then OFF.

Question 4

With AC power available, and the APU selector to ON, the _______ and cannot be turned off on the
ground.

Answer 4

left forward fuel pump operates automatically

Question 5

What occurs when the APU selector is turned to OFF?

Answer 5

Initiates normal shutdown.

Question 6

Oil pressure, temperature, and quantity are ______.

Answer 6

displayed on the secondary engine display

Question 7

The START/IGNITION selectors control the ______ and provide continuous ignition capability.

Answer 7

starter air valves

Question 8

During takeoff, the EGT indication is _____.

Answer 8

often in the amber band

Question 9

What does the autostart system NOT monitor during engine start?

Answer 9

Oil pressure and oil temperature

Question 10

How does the EEC shift from NORM to the soft alternate mode of operation?

Answer 10

If the required signals are not available to operate in the normal mode

Question 11

The ALTN mode of EEC operation provides _______.

Answer 11

overspeed protection

Question 12

In the alternate mode, the EEC uses _____ as the controlling parameter.

Answer 12

N1

Question 13

During a ground Autostart with the FUEL CONTROL switch in RUN, at the appropriate ______ the engine
valve opens and the ignitor(s) energize.

Answer 13

N2 RPM

Question 14

How many starters does the APU have?

Answer 14

Two, one electric and one air turbine

Question 15

In flight, the APU will automatically shut down with no cool-down period for ______.

Answer 15

an overspeed

Question 16

How can pilots be certain that the APU is operating normally?

Answer 16

The message APU RUNNING is displayed on EICAS.

Question 17

Regarding the Thrust Reverser System, the EECs also provide thrust limits protection in which mode?

Answer 17

Reverse operation.

Question 18

Secondary engine indications are automatically displayed when _______.

Answer 18

the fuel control switch is moved to CUTOFF in flight

Question 19

If the EGT limit is exceeded during an inflight engine restart, ______.

Answer 19

the start is temporarily discontinued

Question 20

The normal power source for engine ignition is main AC power. The backup source for ignition is ______.

Answer 20

standby AC power

Question 21

During an inflight engine autostart, if the EGT limit is exceeded, the _______.

Answer 21

start is temporarily discontinued to allow engine cooling; however, the autostart is not
aborted

Question 22

Forward throttle movement is mechanically restricted until _______.

Answer 22

the reverse thrust lever is fully down.

Question 23

Engine failure WARNINGs occur when the engine produces less than commanded thrust ______.

Answer 23

during takeoff below 400 feet radio altitude and between 65 knots and 6 knots less than V1

Question 23

On the ground with the engines not running, the APU shuts down with no cool-down period if which of
the following occurs: _____.

Answer 23

APU controller failure

Question 24

During an inflight engine start, how does the EEC interact with the ignitors?

Answer 24

it selects both ignitors

Question 24

An auto-relight is initiated anytime a flameout is detected. A flameout is detected by the EEC when____.

Answer 24

N2 is less than idle RPM

Question 25

During a ground engine start, what action does AUTOSTART perform?

Answer 25

It may abort, and then re-initiate the start

Question 26

With autostart switch selected OFF, the spar and engine fuel valves open, allowing fuel flow to the
engine, when the _______.

Answer 26

engine fire handle is in, and the FUEL CONTROL switch is in RUN

Question 27

How would you know that the EEC had switched to the soft alternate mode (200A/B)?

Answer 27

EPR indication is blank

Question 28

The NORM mode of EECs (200A/B) operation provides _______.

Answer 28

thrust limit and overspeed protection

Question 29

On the ground, the autostart system will attempt a maximum of _______ start(s) (200A/B)

Answer 29

2

Question 30

APU fuel can be provided by _____.

Answer 30

any AC fuel pump supplying fuel to the left fuel manifold

Question 31

In flight, the APU automatically starts regardless of APU selector position under which of these
conditions?

Answer 31

Loss of power to both AC transfer busses.

Question 32

When the START/IGNITION switch is in the NORM position, continuous ignition is automatically provided
_______.

Answer 32

with the flap lever out of the UP position

Question 33

The EEC automatically selects approach idle when _____.

Answer 33

flaps are commanded to 25 or greater

Question 34

The autostart system will attempt a second start for all the following conditions EXCEPT for _____.

Answer 34

insufficient air pressure

Question 35

The autostart system will not attempt a second start on the ground if _______.

Answer 35

there is no N1 rotation

Question 36

The main airplane battery powers the APU _______.

Answer 36

inlet door, fuel valve, and fire detection system

Question 37

The APU continues to operate in the attended mode and the EICAS message APU LIMIT displays for a
______ fault.

Answer 37

high EGT