Power Plant

Question 1

How is nose cone de-iced?

Answer 1

By a number of bleed air holes around the
tip of cone

Question 2

What accessories are mounted on the
engine?

Answer 2

H-hydraulic pump
O-oil pump and tank
P-permanent magnet alternator
F-fuel control unit
I-integrated drive generator
B-breather

Question 3

What’s the meaning of engine oil
shutdown quantity?

Answer 3

It’s a ten (10) minute after shutdown
snapshot quantity

Question 4

How is oil filling accomplished?

Answer 4

By conventional gravity filling or through
remote replenishing system

Question 5

When does EEC channel transition
from A to B, or B to A?

Answer 5

When FUEL CONTROL switch is
positioned from RUN to OFF. Note:
ground - air - ground transition also req’d.

Question 6

What’s the only time you’re
completely FADEC protected during
start?

Answer 6

On the ground

Question 7

What can you consider if starter air
valve fails to open?

Answer 7

It has a manual override

Question 8

What is rotor bow or thermal bowing?

Answer 8

N1 and N2 shafts warp or bow due to
asymmetrical cooling after shutdown

Question 9

During what mode would the EEC
energize both igniters continuously at
high spark rate and schedule fuel flow
until rpm stabilizes?

Answer 9

Flameout detection

Question 10

What mode provides auto relight if
FUEL CONTROL switch is selected
to OFF and then back to ON within 20
seconds?

Answer 10

Quick relight

Question 11

Which component, driven by
accessory gearbox, is dedicated source
of power to EEC when the engine is
running?

Answer 11

Permanent Magnetic Alternator (PMA)

Question 12

What are some benefits of FADEC?

Answer 12

P-prolonged engine life
I- improved handling
B- better fuel efficiency
E- engine protection

Question 13

How can autothrottles be
disconnected?

Answer 13

Push either quick disconnect switch,
toggle either engage/disengage button, or
manually adjust throttles.

Question 14

What’s the purpose of hold mode on
takeoff?

Answer 14

Any changes in bleed air are ignored by
EECs which prevents N1 changes during
takeoff roll, rotation, and climbout to 400’
AGL

Question 15

Under what conditions will drag
devices be required for descent?

Answer 15

WAI on and TAT < 0°C

Question 16

When do engines go to approach idle?

Answer 16

Gear extended or flaps 39°

Question 17

Which AT auto-engage conditions can
be inhibited?

Answer 17

Vertical mode change: other reasons are
safety related (i.e., during EDM, speed
protection, and for FLCH mode
descending through 2000’) and cannot be
inhibited

Question 18

When is MCT authorized for use and
for what time limit?

Answer 18

It’s intended for infrequent use at pilot
discretion and available without time limit

Question 19

When does TO/GA power change to
MCT thrust?

Answer 19

As altitude and forward speed increases;
TO/GA is available within takeoff
envelope

Question 20

What’s the caution associated with
selection of ENGINE CONTROL
switches to ALT?

Answer 20

Move affected engine power lever to
midrange to avoid a thrust bump

Question 21

Describe thrust reverser operation.

Answer 21

Electrically controlled and hydraulically
operated

Question 22

REV appears inside N1 gauges during
thrust reverser operation. Describe
color indications.

Answer 22

White for in transit, green for full
deployment, amber for umcommanded
deployment on ground, and red for
uncommanded deployment inflight

Question 23

What happens to the engine during
uncommanded thrust reverser
deployment?

Answer 23

FADEC commands engine to idle