ENGINES / THRUST LEVERS Flashcards

1
Q

What controls the engines in all operating regimes?

A

FADECs (Full Authority Digital Engine Controls)

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2
Q

What functions does the FADEC control?

A

a. Fuel metering
b. Engine limits based on thrust lever angle
c. Start sequencing
d. Provides engine indications and thrust limit displays on the E/WD

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3
Q

What redundancy does the FADEC have?

A

Dual channel redundancy – one channel is active while the other is standby

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4
Q

What is the power source for the FADEC?

A

a. The system has its own alternator making it independent of the aircraft electrical system when N2 is above a set value
b. If this alternator fails the FADEC automatically switches to aircraft electrical power

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5
Q

When will the FADEC abort a start?

A

a. Hot start
b. Stalled start
c. No ignition

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6
Q

If the FADEC detects a fault during automatic start, is any crew intervention required?

A

No. The FADEC will discontinue the start, clear the engine, and attempt a restart (if warranted) automatically

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7
Q

When does the FADEC command a higher engine idle speed?

A

a. Bleed demands
b. Approach Configuration
c. High engine or IDG temperatures

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8
Q

How many igniters fire on manual or in-flight starts?

A

Both A and B

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9
Q

When does continuous ignition automatically operate?

A

a. Engine flameout detection

b. Failure of the Engine Interface Unit (EIU)

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10
Q

What is the active range of the A/THR?

A

a. Just above IDLE to the CL detent (2 engines)

b. Just above IDLE to the MCT detent (1 engine)

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11
Q

What determines the maximum thrust the A/THR system will be able to command?

A

The position detent of the thrust lever

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12
Q

What are 3 ways to disconnect the A/THR?

A

a. Instinctive Disconnect buttons
b. Thrust Levers to IDLE
c. A/THR pushbutton

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13
Q

How do you disconnect the A/THR for the remainder of the flight?

A

Press and hold the Instinctive Disconnect Pushbutton for 15 seconds

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14
Q

What would you loose if you held down the Instinctive Disconnect Pushbutton for more that 15 seconds?

A

Alpha Floor Protection

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15
Q

What happens to thrust and what annunciates on the FMA when you reach Alpha Floor?

A

a. Thrust – TOGA

b. FMA – A.FLOOR

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16
Q

What occurs during Alpha Floor protection after speed increases above Vls?

A

FMA changes to TOGA LK

17
Q

How do you regain normal A/THR when in TOGA LK or THR LK?

A

a. Move Thrust Levers to the TOGA detent
b. Press the Instinctive Disconnect button
c. Return Thrust Levers to CL detent
d. Push the A/THR pushbutton to engage A/THR

18
Q

When is Alpha Floor Protection active?

A

From lift-off through 100 feet RA on approach

19
Q

When would Thrust Lock occur?

A

a. Thrust levers in CL detent and A/THR pushbutton on the FCU is pushed, or
b. A/THR disconnects due to a failure

20
Q

What controls the engine LP fuel valves?

A

Engine MASTER switch

b. ENGINE FIRE pushbutton

21
Q

What does a fault light on the ENG panel indicate?

A

a. Auto start abort

b. Switch disagreement between HP valve and its commanded position