Engine

Question 1

Minimum oil pressure?

Answer 1

25 psi

Question 2

What items are on the accessory gear box?

Answer 2

• Engine driven fuel pump
• IDG
• Air turbine starter (ATS)
• Engine driven hydraulic pump
• Oil pump
• Permanent magnet alternator (PMA)

Question 3

How is IDG cooled?

Answer 3

Air cooled

Question 4

What is normal max thrust and reserve thrust?

Answer 4

• 13,800 normal

* 14,200 reserve

Question 5

Engine type

Answer 5

GE CF34-8E5

Question 6

How many igniters per engine?

Answer 6

2

Question 7

How many igniters are energized for starts?

Answer 7

• On ground - 1

* In flight - 2

Question 8

What happens when the ignition switch is selected to OVRD?

Answer 8

•Both igniters are energized on the ground or in flight

Question 9

Can the igniters be turned off in flight?

Answer 9

No, FADEC disregards the off command

Question 10

What controls the engine?

Answer 10

Dual channel FADEC

Question 11

How is fuel heated?

Answer 11

Fuel/oil heat exchanger

Question 12

What happens if a thrust reverser inadvertently deploys?

Answer 12

FADEC limits engine thrust to idle

Question 13

Will turning the start/stop selector to stop alone shut down the engine?

Answer 13

No, thrust lever must be at idle

Question 14

When does the FADEC command starter cutout during engine starts?

Answer 14

Approximately 50% N2

Question 15

Does the FADEC provide protection for in flight engine starts?

Answer 15

No protection for hot starts, hung starts, or failure to light off

Question 16

During engine relights which igniters are energized?

Answer 16

Both igniters

Question 17

In flight when should the auto relight be manually terminated?

Answer 17

• Engine relight does not occur within 30 seconds

* N2 falls below 7.2%

Question 18

On the ground when are auto relight attempts automatically terminated?

Answer 18

Engine rpm falls below 52% N2

Question 19

How are the thrust reversers actuated?

Answer 19

Hydraulically

Question 20

What provides protection against inadvertent thrust reverser deployment?

Answer 20

FADEC provides an interlock function

Question 21

When is the FADEC in control channel switched?

Answer 21

On every engine start

Question 22

What powers the FADEC?

Answer 22

• Above 50% N2 - permanent magnet alternator (PMA)

* Below 50% N2 - aircraft electrical system (28 VDC)

Question 23

When will the ATTCS automatically command reserve thrust?

Answer 23

Thrust levers in TOGA and:
•Difference between N1 values greater than 15%
•One engine failure during takeoff
•One engine failure during go around
•Windshear detected

Question 24

During engine starts FADEC will not allow fuel flow above what ITT?

Answer 24

120°C

Question 25

How does the FADEC provide overspeed protection?

Answer 25

When N2 reaches 102% the FADEC commands an engine shutdown

Question 26

On the ground what protection does the FADEC provide for engine starts?

Answer 26

• Hot starts
• Hung starts
• No light off

Question 27

During an overspeed when will the FADEC not relight the engine?

Answer 27

After 3 consecutive overspeeds within 30 seconds

Question 28

Describe N1 spool?

Answer 28

• Single stage fan

* 4 stage LP turbine

Question 29

Describe N2 spool?

Answer 29

• 10 stage compressor

* 2 stage HP turbine

Question 30

What does WML mean on the engine indications?

Answer 30

• Windmilling engine
• The FADEC has detected a flame out and is attempting an auto relight
• An assisted start has been commanded

Question 31

What is the N1 cyan line?

Answer 31

• Minimum N1 required for bleed requirements

* Displays

Question 32

With one thrust reverser inop what does selecting both reversers to MAX do?

Answer 32

Operating reverser will command idle thrust only

Question 33

What is the default climb mode on power up?

Answer 33

Climb 1

Question 34

When will climb 2 become the default?

Answer 34

When selected takeoff thrust is below climb 1