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Spirit Airbus A320 Training > Engines / Thrust Levers > Flashcards

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
  • Fuel metering
  • Engine limits based on thrust lever angle
  • Start sequencing
  • 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
  • The system has its own alternator making it independent of the aircraft electrical system when N2 is above10%
  • If this alternator fails the FADEC automatically switches to aircraft electrical power
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5
Q

When will the FADEC abort an automatic start?

A
  • Hot start
  • Stalled start
  • No ignition
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6
Q

The FADEC detects a fault during automatic start. What crew intervention is required?

A

There is no crew intervention necessary. 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
  • Bleed demands
  • Approach configuration
  • High engine or IDG temperatures
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8
Q

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

A
  • One igniter with the other serving as a backup

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

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9
Q

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

A

Two, both A and B

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10
Q

When does continuous ignition automatically operate?

A 
• NEO Aircraft
o Engine flameout detection
o Failure of the EIU
o In-flight unscheduled sub idle or surge
o Master switch cycled from ON to OFF then back to ON position
• Non-NEO Aircraft
o All of the above
o Engine anti ice ON
o Approach idle
o MAX/FLEX power selected
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11
Q

What are the 5 detent positions of the thrust levers?

A
  • TOGA – Take Off/Go Around
  • FLX / MCT – Flex/ Maximum Continuous Thrust
  • CL – Climb
  • IDLE – Idle
  • MAX REV – Maximum Reverse Thrust
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12
Q

On the ground, how can the A/THR be armed?

A
  • By setting the thrust levers in the TOGA or FLEX gate (with a FLEX temperature inserted in the MCDU)
  • At least one FD must be ON for A/THR to arm during takeoff
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13
Q

What is the active range of the A/THR?

A
  • Just above IDLE to the CL detent (2 engines)

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

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14
Q

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

A

The CL detent

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15
Q

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

A

The thrust lever angle

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16
Q

What are three ways to disconnect the A/THR?

A
  • A/THR pushbutton
  • Instinctive disconnect pushbuttons
  • Thrust levers to IDLE
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17
Q

What is the preferred method of disconnecting A/THR?

A

Set the thrust lever angle to the existing EPR and push the instinctive disconnect pushbuttons

18
Q

How would the A/THR be disconnected for the remainder of the flight?

A

Press and hold the instinctive disconnect pushbutton for 15 seconds. The A/THR cannot be re-engaged once this is done. ALPHA FLOOR is also lost if this is done.

19
Q

What happens to thrust and what annunciates on the FMA during ALPHA FLOOR?

A
  • Thrust – TOGA

* FMA – “A.FLOOR”

20
Q

When does the aircraft leave ALPHA FLOOR and what does the FMA change to?

A

Upon reaching a lower angle of attack. The FMA changes to “TOGA LK”

21
Q

Following ALPHA FLOOR, how would the crew return normal A/THR function?

A
  • Press the instinctive disconnect pushbutton
  • Return thrust levers to CL detent
  • Push the A/THR pushbutton to engage A/THR
22
Q

When is ALPHA FLOOR protection active?

A

From lift-off through 100 feet RA on approach

23
Q

When would Thrust Lock occur?

A
  • Thrust levers in CL detent and A/THR pushbutton on the FCU is pushed, or
  • A/THR disconnects due to a failure
24
Q

How is A/THR normally armed?

A

By advancing the thrust levers to TOGA or FLX

25
Q

What would be the normal FMA indications during a takeoff roll using FLEX thrust on a RWY with a localizer?

A

MAN FLX, SRS, RWY, A/THR (blue)

26
Q

What would the FMA indications be during a takeoff roll using TOGA thrust on a runway without a localizer?

A

MAN TOGA, SRS, A/THR (blue)

27
Q

What would the FMA indications be during takeoff roll if the A/THR didn’t arm on a runway with a localizer? Should the takeoff be aborted?

A

• SRS, RWY
• Continuing the takeoff is a safe option, but the thrust levers must be moved
to the climb detent at thrust reduction altitude and the crew must manually engage A/THR

28
Q

How should A/THR be turned off?

A

Match the blue thrust lever angle indicators to the present thrust setting and push the instinctive disconnect pushbuttons or move THRUST LEVERS to IDLE

29
Q

What should the pilot do to get out of TOGA LOCK?

A

Push the instinctive disconnect pushbuttons and move the THRUST LEVERS to the CL detent

30
Q

What should the pilot do to get out of THRUST LOCK?

A

Match the thrust lever angle with ENG output

31
Q

What is the A/THR active zone for two-engine operations?

A

From slightly above IDLE to CL

32
Q

What is the A/THR active zone for single-engine operations?

A

From slightly above IDLE to MCT

33
Q

What controls the engine LP fuel valves?

A
  • Engine MASTER switch

* ENGINE FIRE pushbutton

34
Q

What does a FAULT light on the ENG panel indicate?

A
  • Automatic start abort

* Switch disagreement between HP valve and its commanded position

35
Q

What is the rated thrust of each engine?

A
  • A319 V2524-A5 = 23,500lbs
  • A320 CEO V2527-A5 = 27,000 lbs
  • A321 V2533-A5 = 32,500 lbs
  • A320 NEO NEO PW1127G = 27,000 lbs
36
Q

What is the required engine warm up time?

A
  • IAE V2500 Shutdown - 2hrs
  • IAE V2500 Shutdown + 2hrs
  • PW1100G Shutdown =3Mins =5Mins =5Mins
37
Q

What is the required engine cool down time after landing?

A
  • IAE V2500 = 0 Mins Rev Idle
  • IAE V2500 = 3 Mins Greater than reverse idle
  • PW1100G = Minimum of 3 Mins, 5 Mins recommended
38
Q

What does the cooling indication mean on the E/WD for NEO Aircraft?

A
  • Steady indication = Automatic dry cranking is about to begin and the timer indicates the time left before dry crank begins.
  • Pulsing indication = Automatic dry cranking is in progress
39
Q

If icing conditions exist on the ground, how is the Engine Run-up procedure different for NEO and non-NEO aircraft?

A

• IAE V2500 = Accelerate to Minimum of 50% N1 at intervals not more than 15 minutes apart
• PW1100G = Accelerate to Minimum of 60% N1
at intervals not more than 30 minutes apart

40
Q

If during start, the ground crew reports a fuel leak from the engine, what should be done by the flight crew?

A

• IAE V2500 = Run the engine for 5 minutes, if leak disappears, the flight can
continue without Maintenance action
• PW1100G = Abort the engine start sequence, Maintenance action is
Required

41
Q

How is Approach Idle different on NEO vs non-Neo aircraft?

A

• Non-NEO Minimum Approach Idle Speed occurs when: o Aircraft is in flight and the flaps are extended
• NEO Minimum Approach Idle Speed occurs when:
o Aircraft is in flight and the flaps are at CONF 3 or FULL or when the
landing gear is down.

Spirit Airbus A320 Training (52 decks)

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