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FCOM/FCTM/MEL-CDL/MSS A320 > ATA 32 - Landing Gear > Flashcards

ATA 32 - Landing Gear Flashcards

1
Q

How many channels of BSCU ?

A

2 channels

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2
Q

System diagram of brake system ?

A

Cf diagram

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3
Q

Give the 4 brakes mode ?

A

Normal braking
Alternate braking with A/S
Alternate braking without A/S
Alternate braking without A/S on accumulator

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4
Q

How many LGCIU ?

A

2, 1 master and 1 slave
Change at each retraction cycle (or failure)

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5
Q

Which LGCIU controls gear lights on main panel ?

A

LGCIU 1

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6
Q

When does the interlock of landing gear lever is active ?

A

Landing gear compressed or nose gear not centered

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7
Q

Are wheels braked when retracted ?

A

Yes, main gear wheels are braked automatically during retraction.
Nose wheels are braked with rubber band in the nose gear bay.

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8
Q

VLE (speed and mach) ?

A

280 kt , M 0,67

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9
Q

Operation of gear is prevented by safety valve at which speed ?

A

260 kt

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10
Q

Which LGCIU is displayed on ECAM wheel page ?

A

1 and 2
Each LGCIU represent one triangle

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11
Q

If 1 triangle amber and 1 triangle green on ECAM Wheel page, landing gear locked ?

A

Yes, 1 green is sufficient

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12
Q

At what altitude landing memo is displayed ?

A

2000ft RA and on approach

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13
Q

What does mean red arrow of landing gear lever ?

A

Gear not downlocked while on approach configuration

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14
Q

What does each rotation of the gravity extension lever perform ?

A

1st turn : hydraulic cut off valve
2nd turn: release doors
3rd turn : release gear

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15
Q

Is it possible to retract gear after gravity extension ?

A

No (and gear doors stay open) —> fuel consumption increase

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16
Q

NSW maximum deflection values and speed for disconnection for:
-pedals
-handwheel ?

A

Pedals : 6°, disconnects at 130kt
Handwheel: 75° disconnects at 70 or 80kt

17
Q

Which hydraulic circuit for NSW ?

A

Old: Green, actuated in return line of nose doors (—> if gravity extension, you loose NSW)
New: Yellow

18
Q

Anti skid works on which information ?

A

Wheel tachometer vs ADIRS 1 2 3 aircraft reference speed (or fastest wheel if ADIRS failure)
90% —> brake off

19
Q

Anti skid is inhibited at which speed ?

A

20kt

20
Q

How many full brake applications available if on «Alternate braking without antiskid on accumulator» ?

A

7 at 1000psi

21
Q

Can autobrake MAX be armed inflight ?

A

No

22
Q

On which hydraulic circuit works autobrake ?

A

Green

23
Q

When will autobrake lights be displayed on main panel ?

A

Deceleration > 80% deceleration rate selected

24
Q

What systems should be operational for autobrake use ?

A

BSCU
1 ADIRU
2 SECs ( for spoilers )

25
Q

At which ground speed will autobrake work ?

A

Above 72kt, when spoilers deploy
The command for ground spoilers extension is detected, and the wheel speed is above 40 kt, for MAX mode

26
Q

Will autobrake work if ground spoilers not armed ?

A

Yes, when 1 reverse and other lever at least idle

27
Q

At which temperature of brake a green arc appears on ECAM door page ?

A

Above 100°C only on the hottest

28
Q

Can the gear be extended above 260 kts if necessary?

A

Yes , but only manually

29
Q

Nose wheels and main wheels have fusible plugs that prevent the tires from bursting if they overheat. True or False ?

A

False, not on nose gear

30
Q

The parking brake accumulator is designed to maintain the parking pressure for at least _____ h ?

A

12h

31
Q

On wheel page of ECAM, Autobrake is flashing green. What does it mean?

A

Autobrake disengaged

32
Q

When is NSW by the handwheel available ?

A

Below 70kts, one engine running and towing lever normal position

33
Q

During an approach you get MASTER WARNING and ECAM : “GEAR NOT DOWN”, and both radio altimeter failed, what is the reason ?

A

LG not downlocked, Flaps FULL or 3, RA < 750ft

34
Q

Max braking has been selected, TAKE-OFF being aborted after 72kt, engines in reverse, you have forgotten to arm the ground spoilers ; is the AUTOBRAKE activated ?

A

Yes because ground spoilers will still be activated

35
Q

After LIFT-OFF, is BRAKES HOT WARNING on ECAM still available ?

A

No matter what position of the landing gear lever

36
Q

After T/O the LEFT MAIN GEAR SHOCK ABSORBER is stuck in compressed position. Can you retract gear ?

A

No. Lever is blocked.

37
Q

Which ADR’s controls the SAFETY VALVE closure of the GREEN HYDRAULIC SUPPLY of the landing gear when speed > 260 KTS ?

A

ADR 1 and 3

38
Q

Deflection maximale NSW handweel et rudder pedals ?

A

75° & 6° function of aircraft speed. Max speed ~70kt and ~130kt respectively

FCOM/FCTM/MEL-CDL/MSS A320 (27 decks)

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