Engine

Question 1

How are the engines controlled?

Answer 1

FADEC

Question 2

What will happen if the STOP is selected with the thrust levers not in the idle position?

Answer 2

FADEC will not shut the engine down

Question 3

What does the ignitor selector knob OFF position do?

Answer 3

deactivates the ignition system and inhibits fuel flow on the ground

Question 4

What does OVRD on the edition selector do?

Answer 4

Enables FADEC to continuously activate both exciters when the engine is running.

Question 5

When is the cyan line displayed on the NT gauge?

Answer 5

During icing conditions on final approach below 1200’ with gear or flaps down.

Question 6

What does the Cyan line on the N1 Gauge mean?

Answer 6

Min thrust level to meet bleed requirements for icing conditions.

Question 7

What does the cyan V shaped bug on N1 gauge indication?

Answer 7

N1 target

Question 8

What does the WML icon on the ignition channel indication mean?

Answer 8

FADEC has detected an engine flameout and the auto-relight system is actuation to restart the engine.

Question 9

When does FADEC initiated ignition during a ground start?

Answer 9

7% N2

Question 10

When does FADEC introduce fuel during a ground start?

Answer 10

20% N2

Question 11

When will FADEC command a starter cutout during a ground start?

Answer 11

50% N2

Question 12

What indications require an engine start to be manually aborted?

Answer 12

• No positive oil pressure within 10 sec of N2 increase
• No ITT increase within 30 seconds of fuel application
• Itt exceeds start limit (hot start)
• N1 and/or N2 Fail to accelearte stable idle speed (Hung start)
• intermittent electrical pneumatic or start malfunction prior to starter disengagement.
• During tailwind, no positive increase of N1 before starter cutout (50% N2)

Question 13

What is the difference between ATTCS in green vs white?

Answer 13

Green = system engaged (thrust levers in TOGA)
White= system is armed.

Question 14

When will the ATTCS command RSV thrust?

Answer 14

• 15% difference between N1 values
• engine failure during takeoff
• engine failure on Go-around
• windshear

Question 15

Can ATTCS be activated manually?

Answer 15

yes, by moving the thrust levers to the MAX position

Question 16

How does engine overspeed protection work?

Answer 16

When N2 reaches 102% FADEC shuts engine down. if overspeed is detected 3 times in 30 seconds FADEC will not relight the engine.

Question 17

What bus powers the “A” igniters

Answer 17

ACC STBY BUS (in case of dual engine failure)

Question 18

What powers FADEC above/below 50% N2?

Answer 18

Above 50%- PMA (Permanent magnetic alternator)

Below 50%-Aircraft electrical source

Question 19

What does the Green bug on the N1 Gauge mean

Answer 19

Maximum possible power for current conditions.