Engines

Question 1

On CFM56 series engines, the majority of the thrust is provided by:

Answer 1

The airflow which enters through the fan and bypasses the engine core.

Question 2

Items critical to engine operation that are driven by the accessory gearbox are the:

Answer 2

1. The engine oil pumps.
2. The engine fuel pumps and engine fuel control unit.
3. The alternator dedicated to providing electrical power to the FADEC.
   — ALL OF THE ABOVE —

Question 3

Each engine is equipped with a two channel Full Authority Digital Engine Control, FADEC. If one channel fails:

Answer 3

The other channel is fully capable of operating the engine and providing all FADEC functions.

Question 4

Primary engine indications are displayed on the:

Answer 4

E/WD

Question 5

During a manual start, how many igniters are in use?

Answer 5

2

Question 6

True or False: The FADEC provides protection against exceeding N1, N2 overspeed, and monitors EGT during start on the ground.

Answer 6

True

Question 7

Maximum thrust is referred as:

Answer 7

TOGA

Question 8

During a manual start, how many igniters are in use?

Answer 8

2

Question 9

During a manual start, how many igniters are in use?

Answer 9

1. IAE Engine anti-ice is selected on
2. A flameout is sensed
3. Ignition delay is detected during an automatic start
   — ALL OF THE ABOVE —

Question 10

During engine starting, what valve is represented here:

Answer 10

Engine start valve

Question 11

Maximum thrust is referred as:

Answer 11

TOGA

Question 12

What is represented by the white circle?

Answer 12

Current position of the engine’s thrust lever

Question 13

True or False: The CFM LEAP-1A has Thrust Control Malfunction Accommodation which, when activated on the ground, will shut down the engine if the thrust levers are in the idle or reverse position.

Answer 13

True

Question 14

Benefits of the CFM LEAP-1A engine on the A321NX aircraft over current CFM engines include:

Answer 14

1. Reduced fuel consumption
2. Quieter operation
3. Reduction in emissions
   — ALL OF THE ABOVE —

Question 15

What is the mandatory cool down time for a CFM LEAP-1A Engine prior to shut down?

Answer 15

3 minutes

Question 16

The CFM LEAP-1A, FADEC will only automatically abort a MANUAL engine start if it is on the ground and_____.

Answer 16

1. EGT Start limit is exceeded before 50% N2
2. Starter Shaft Shear fault occurs
3. Dual N2 sensor failure is detected
   — ALL OF THE ABOVE —

Question 17

The CFM LEAP-1A engine, FADEC will command both ignitors on automatically when a flameout is detected or ___

Answer 17

After the second failed auto start attempt

Question 18

What is the FO’s “Engine Start Procedure” following the trigger “Start engine____” from the Captain?

Answer 18

1. ENG MODE selector to “IGN/START
2. ENG 1 or 2 MASTER to “ON”
3. Main and Secondary Engine Idle Parameters: “Check Normal”

Question 19

What are the “Engine Warm up” procedure(s)?

Answer 19

When engines have been shut down MORE than 1.5 hours, run them for at least 5 minutes.

When shut down LESS than 1.5 hours, run the engines for at least 3 minutes.

Question 20

What are the Reverse Thrust Limitations?

Answer 20

Maximum reverse thrust should NOT be used below 70 KIAS (or when the inicated air speed starts to flucuate).
Idle reverse is permitted to aircraft stop