ENGINES/THRUST LEVERS Flashcards

1
Q

What controls the engines in all operating regimes?

A

o FADEC’s (Full Authority Digital Engine Controls)

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2
Q

What redundancy does the FADEC have?

A

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

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3
Q

What is the power source for the FADEC?

A

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

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4
Q

When will the FADEC abort a start?

A

o Hot start, Hung start
o Stalled start
o No light up

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5
Q

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

A
o No. The FADEC will discontinue the start, clear the engine, and attempt
a restart (if warranted) automatically.
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6
Q

When does the FADEC command a higher engine idle speed?

A

o Bleed demands
o Approach Configuration
o High engine or IDG temperatures

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7
Q

How many igniters fire during a Normal automatic ground start sequence?

A

o One igniter with the other serving as a backup.

o The FADEC automatically alternates the igniters (A and B) at each start.

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8
Q

How many igniters fire on Manual or In-flight starts?

A

o Both A and B

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9
Q

When does continuous ignition automatically operate?

A

o Engine flameout detection

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10
Q

What is the active range of the A/THR?

A

o Just above IDLE to the CL detent (2 engines)

o Just above IDLE to the MCT detent (1 engine)

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11
Q

What is the normal operational position of the thrust levers when A/THR is
active?

A

o The CL detent

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12
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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13
Q

What are 3 ways to disconnect the A/THR?

A

o A/THR PB on FCU (not recommended)
o Instinctive Disconnect buttons
o Thrust Levers to IDLE

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14
Q

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

A

o Press and hold the Instinctive Disconnect button for 15 seconds

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15
Q

Will you be able to restore A/THR?

A

o No, on ground only after both FMGC power up

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16
Q

What else will you lose?

A

Alpha Floor Protection

17
Q

When would Thrust Lock occur?

A

o Thrust levers in CL detent and A/THR pb on the FCU is pushed (OR)
o A/THR disconnects due to a failure

18
Q

How do you get out of Thrust Lock?

A

o Move TL’s out of the detent.

o Move TL’s to match the desired thrust setting

19
Q

What does a fault light on the ENG panel indicate?

A

o Auto Start Abort

o Position of FUEL HP shutoff valve abnormal Malfunction of the thrust control