Engines and APU Flashcards

1
Q

Define N1

A

Speed of low-pressure compressor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define N2

A

Speed of high-pressure compressor

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What are the start lever positions?

A

IDLE and CUTOFF

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is required for selection of reverse thrust?

A

Related forward thrust lever is at idle

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

What fuel valve(s) close when an engine Start Lever is moved to CUTOFF?

A

Associated engine and spar fuel valves

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What component controls and monitors engine parameters?

A

Electronic Engine Control (EEC)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The Electronic Engine Control (EEC) provides exceedance protection for which
parameter(s) in normal mode?

A

N1 over-speed, N2 over-speed, and over-boost

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

In Normal Mode, what does the Electronic Engine Control (EEC) use to calculate N1
thrust ratings?

A

Sensed flight conditions and bleed air demand

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What are the possible EEC modes with the Engine EEC switch showing both the ON
(white) and ALTN (amber) displays illuminated?

A

Soft or hard alternate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Compare thrust in EEC HARD ALTERNATE Mode to normal mode for a given thrust
lever position

A

Thrust is at least as high as commanded

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What does an ENGINE CONTROL (amber) light mean?

A

Non-dispatchable engine fault

Light illuminated when:

Non-dispatchable fault exists, and
Engine is operating (N2 >= 50% and start lever IDLE), and
Aircraft on ground

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

What are the Thrust Mode Display annunciations?

A
TO - takeoff
TO B - takeoff bump thrust
R-TO - reduced takeoff
CLB - climb
R-CLB - reduced climb
CRZ - cruise
G/A - go around
CON - continuous
----- FMC not computing thrust limit
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

What causes the ENG FAIL (amber) on the EGT indicator?

A

N2 < 50%

Start Lever - IDLE

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

What removes an ENG FAIL Alert (amber)?

A

Engine recovers, or

Start Lever - CUTOFF, or

Fire Switch Pulled

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

On the ground, after engine shutdown, what does a red box on the EGT Readout
indicate?

A

An in-flight EGT exceedance has occurred

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

What does “reverse video” displayed on the Engine Vibration readout indicate?

A

Vibration exceeds 4.0

17
Q

What should the ENG VALVE CLOSED lights (blue) and SPAR VALVE CLOSED lights
(blue) indicate during a normal preflight, power ON, Engines not running?

A

Dim blue

18
Q

What does an illuminated FILTER BYPASS light (amber) indicate?

A

Impending fuel filter bypass

19
Q

What is the indication if the engine oil pressure drops below redline during takeoff roll (>80 kts)?

A

Steady illumination of amber LOW OIL PRESSURE on the engine display unit.

20
Q

What does the Ignition Select Switch in the IGN R position select?

A

The right igniter for both engines for GRD/CONT

21
Q

In flight, what does the Engine Start Switch in CONT provide with the Engine Start
Lever in IDLE?

A

Continuous ignition to engine with the selected L/R igniter

22
Q

In flight, what does the Engine Start Switch in FLT provide with the Engine Start Lever in IDLE?

A

Continuous ignition to engine with both igniters

23
Q

What does a steady START VALVE OPEN (amber) light indicate?

A

Respective start valve is open and air is supplied to the starter

24
Q

What does an amber REV indicates? A green REV?

A

Amber REV indicates the reverser is in transit

Green REV indicates the reverser is fully open

25
Q

What does a REVERSER (amber) light on the Aft Overhead Panel indicate?

A

Auto-stow circuit is activated, normal if out within 10 seconds

26
Q

Which APU lights will accompany an automatic APU shutdown?

A

Fire, or
Low oil pressure, or
Fault, or
Over Speed

27
Q

EEC Idle Speeds

A

Ground Idle ~20% N1

Flight Idle ~ 30% N1

Approach Idle ~ 40% N1
(Flaps ext or EAI on)