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atmosphere 320 > Landing Gear > Flashcards

Landing Gear Flashcards

1
Q

What does two amber XX’s mean in place of a green triangle on the WHEEL SD page?

A

One LGCIU has failed

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2
Q

When does a green arc appear over brake?

A

When one brake >100degC

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3
Q

When does an amber arc appear over brake?

A

When one brake >300degC

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4
Q

Maximum brake temperature for take off without any brake fans? With brake fans?

A

300degC without fans, 150degC with fans

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5
Q

When do the fusible plugs melt in the tyre? Why do they do this?

A

When brakes reach 800degC to prevent tyre burst

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6
Q

Maximum speed with landing gear extended? VLE

A

280kt

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7
Q

Maximum speed for landing gear extension? VLOe

A

250kt

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8
Q

Maximum speed for landing gear retraction? VLOr

A

220kt

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9
Q

Maximum tyre speed?

A

195kts

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10
Q

Maximum wiper operating speed?

A

230kts

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11
Q

Maximum window open speed?

A

200kts

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12
Q

4 modes of braking

A

1) Normal - Green sys; anti skid; autobrake; no pressure indications

2) Alternate with anti skid - Yellow sys; anti skid; no autobrake

3) Alternate without anti skid - anti skid deactivated either:
a) Electrically - BSCU fail, A/SKD NWS switch
b) Hydraulically - Y+G LOW PR -> brakes supplied by accum only - 7 applications
Automatically 1000psi max to avoid wheel lock and tire burst

4) Parking brake- Yellow sys or accumulator

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13
Q

Why is Alternate Braking Without Antiskid limited to 1000psi?

A

Prevent wheel locking

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14
Q

How many full braking applications on accumulator braking?

A

7

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15
Q

Describe autobrake deceleration modes

A

Low - spoiler activation + 2s @ 2/s
Med - spoiler activation + 2s @ 3m/s
Max - when thrust levers are closed above 72kts

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16
Q

When will DECEL light come on?

A

When 80% of target deceleration achieved

17
Q

How does anti skid function?

A

Maintains wheel speed just above impending skid.
Disabled below 20kts
Compares wheel speed to aircraft speed and if not equal releases the brakes

18
Q

QRH procedures for gear/brakes?

A

Loss of braking
Gravity gear extension
Landing with abnormal gear
Asymmetric braking

19
Q

When is Autobrake available?

A

Normal Brakes

20
Q

The landing gear panel on the middle console is connected to which LGCIU?

A

LGCIU 1

21
Q

How many degrees of nose wheel steering do we get from:

Rudder pedals
Tiller

And at what speed do we have none?

A

Rudder pedals
+/- 6° progressively less to 130kts

Tiller
+/-75° progressively less to 80kts

22
Q

On the ECAM
We see NW STRG DISC in green meaning the selector is in the towing position.
When does this memo turn amber?

A

If one engine is running

23
Q

Below what speed does anti skid deactivate ?

A

20kts
Careful tasting

24
Q

Above what speed to ground spoilers extend?

A

72kts
Therefore during an RTO autobrake wont kick in unless above this speed!

25
Q

When does auto brake kick in?

A

Ground spoiler extension + 2 second delay

26
Q

Why is the break temp limit 300 degrees?

A

Because that temp ensures the hydraulic fluid will not ignite in the wheel well.

27
Q

When does the LDG GEAR safety valve operate?

A

When the aircraft is flying faster than 260 kt, a safety valve automatically cuts off hydraulic supply to the landing gear system. Below 260 kt, the hydraulic supply remains cut off as long as the landing gear lever is up.

28
Q

When do the LGCIUs swap?

A

On gear retraction

29
Q

What does the red downward facing arrow next to the gear handle indicate?

A

Gear not downlocked in when in landing configuration

30
Q

What is the status of the landing gear doors and gear after Gravity Gear Extn?

A

Doors remain open
Gear cannot be retracted

31
Q

After RTO with Autobrake, how do you disarm Autobrake?

A

Disarm spoilers.

32
Q

Describe general spoiler deployment logic

A

Similar for RTO and Landing (for RTO, speed must be >72kt)

When will the spoilers deploy:

If spoilers armed - Thrust levers idle (and both gear on the ground)

If spoilers not armed - Reverse selected on at least one engine (and both gear on the ground)

33
Q

When does the pressure indicator in the cockpit indicate pressure?

A

Only indicates pressure when the yellow system controls brake pressure:
* Alternate Braking system
* Parking Brake applied

(Top part of gauge shows yellow accumulator pressure)

atmosphere 320 (21 decks)

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