Engine

Question 1

Max thrust continuous?

Answer 1

13,800 lbs

Question 2

How much thrust do the engines produce?

Answer 2

13,800-14,200 lbs (ISA)

Question 3

Describe N1 spool?

Answer 3

Single-stage fan

4-stage LP turbine

Question 4

Describe N2 spool

Answer 4

10-stage compressor (gas generator)

2-stage HP turbine

Question 5

How many igniters per engine?

Answer 5

2 per engine

Question 6

How many igniters activate for engine start?

Answer 6

Ground…..1 igniter (switch in AUTO)

Flight……2 igniters (switch in AUTO)

Question 7

What happens when the ignition switch is selected to OVRD?

Answer 7

Activates both igniters ON THE GROUND OR IN FLIGHT

Question 8

Can the igniters be turned off during flight?

Answer 8

The switch may be moved to the OFF position but the FADEC disregards the command

The OFF position is used for DRY MOTORING on the ground only

Question 9

What controls the engine?

Answer 9

A two-channel FADEC

One channel is active and the other channel remains in standby as a backup

Question 10

Is only one FADEC channel used every flight?

Answer 10

No, they automatically alternate with each engine start

Question 11

What does the cyan line on the N1 gauge represent during approach? When does it appear?

Answer 11

The minimum N1 for bleed requirements in icing conditions

Configured for landing less than 1200’ RA ( when anti-ice is ON)

Question 12

What sources are available for engine starting?

Answer 12

APU
Ground Source (huffer cart or air bottle)
Opposite engine
Windmill start (in flight only)

Question 13

Does the FADEC provide engine start protection?

Answer 13

Only on GROUND for a hot start, hung start, or no light-off

Question 14

What will the FADEC automatically do in case of a start on the ground?

Answer 14

FADEC will not allow FF if ITT is greater than 120 degrees C

FADEC will automatically dry motor engine and introduce fuel when ITT is less than 120 degrees C

Question 15

Describe the engine start sequence

Answer 15

1.start switch momentarily to START:
7% N2......ignition
20% N2 ......fuel flow
20% N2 +5 sec.....light off
50% N2....... Ignition off, Starter Cut-Out

2. Engine stabilizes
N1.....27%
ITT.....460 degrees C
N2.....62% 
FF.......550 lbs/hour
Oil pressure..... Greater than 25 psi

Question 16

What does WML mean on the engine indications?

Answer 16

Windmilling engine
The FADEC has detected a flame-out and is attempting to auto re-light, or
An assisted start has been commanded

Question 17

What provides underspeed and overspeed protection?

Answer 17

The FADEC via the FMU

Approximately 52% N2 and 102% N2 respectively

Question 18

What happens after 3 overspeed detection events?

Answer 18

FADEC will no re-light the engine

Question 19

What heats the fuel and cools the engine oil?

Answer 19

Fuel/oil heat exchanger

Question 20

What is ATTCS? What controls it?

Answer 20

Automatic Take-off Thrust Control System
Provides max thrust reserve (RSV) according to current rate previously selected in the MCDU
FADEC controlled

Question 21

What will trigger an ATTCS event?

Answer 21

N1 difference greater than 15% between engines
Engine failure during TOGA
Windshear detected

Question 22

When is thrust reverse available?

Answer 22

Weight-on-wheels (ground use only)

Question 23

What happens if a thrust reverser inadvertently deploys?

Answer 23

FADEC limits respective engine thrust to IDLE

Question 24

What engine thrust rating(s) may only be used for 10 minutes?

Answer 24

TO-1
TO-RSV (TL beyond TOGA)
GA (two-engine go-around)
GA-RSV (one-engine go-around or windshear)

Question 25

What is FLEX?

Answer 25

Reduced takeoff thrust based on assumed temperature (telling the FADEC that it is warmer than it actually is so it will reduce the thrust)

Question 26

Can the FLEX thrust be reduced lower than CLB thrust?

Answer 26

No

Question 27

What type of engines are on the aircraft?

Answer 27

2 GE CF34-8E5

Hi-Bypass, 2-spool, axial-flow, turbo-fan

Question 28

Max Thrust RSV?

Answer 28

14,200 lbs at ISA

Question 29

Thrust reverser speeds? Idle and stow

Answer 29

Idle: 60kts

Stowed: 30 kts

Question 30

Minimum oil pressure?

Answer 30

25 psi