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FCOM2 > 14 - Landing Gear & Brakes > Flashcards

14 - Landing Gear & Brakes Flashcards

1
Q

The red lights for the gear can illuminate when?

A
  • In transit
  • Unsafe (disagree with gear lever)
  • Below 800 feet with either trust lever to idle
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2
Q

What happens when you open the manual gear extension door?

A

Manual extension is possible with gear lever in any position.
Landing gear retraction is disabled

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3
Q

What happens when you pull one of the manual extension handles?

A

The uplock for that gear is released

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4
Q

When does the AUTO BRAKE DISARM light illuminate?

A
  • SPEED BRAKE lever moved to down during RTO or landing
  • Manual brakes applied during RTO or landing
  • Thrust levers advanced during RTO or landing (except for first 3 seconds of landing)
  • Landing with RTO selected
  • Power on self test when RTO is selected on the ground (2 seconds)
  • A malfunction in the system is detected (continuous)
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5
Q

If the autobrake system is set to RTO, what speed must the airplane reach before it will activate during a RTO?

A

90 knots

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6
Q

What are the following values on the brake pressure indicator:

a. normal pressure
b. max pressure
c. precharge pressure

A

a. 3000
b. 3500
c. 1000

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7
Q

The nose wheel can turn how many degrees using only the rudder pedals?

A

7 degrees

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8
Q

The nose wheel can turn how many degrees using the steering wheel?

A

78 degrees

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9
Q

Nose wheel steering is usually powered by which hydraulic system

A

System A

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10
Q

Which system powers gear retraction and extension normally

A

System A

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11
Q

Which system powers the normal brake system

A

System B

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12
Q

How does anti-skid differ when normal and alternate brake system is used?

A

Normally antiskid works on individual wheels. In alternate braking, it works on wheel pairs

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13
Q

What stops wheel spin of the main and nose gear during retraction?

A

Main gear brakes, and a snubber inside the nose wheel well

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14
Q

What can happen if you retract a spinning broken wheel into the main landing gear compartment

A

The thread can hit a fitting in the outer ring, causing the wheel to free fall back down. Cannot be retracted after this.

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15
Q

What are the conditions needed for the landing gear transfer unit to operate?

A
  • airborne
  • No1 engine RPM drops below a limit value (engine failure)
  • landing gear lever is selected up
  • either main gear is not up and locked
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16
Q

Why can’t the gear freefall into position when system A pressure is lost, and gear lever is selected down?

A

System A uses hydraulic pressure to release the uplocks.

17
Q

What will happen if there is a leak in the landing gear transfer unit, causing a leak and loss of System A, and you then select alternate steering?

A

If system B senses a loss of fluid through the transfer unit, it will shut off a valve, effectively stopping all nose wheel steering

18
Q

What do you have to do to switch from normal to alternate braking?

A

It is done automatically after the loss of System B

19
Q

Will you still have autoskid with loss of both hydraulic systems?

A

Yes

20
Q

When does autobrake application start during landing?

A

Both forward thrust levers in idle.

Main wheel spin up

21
Q

Can you select autobrakes after landing?

A

Yes, up until 30 knots ground speed

22
Q

What are the different ways you can disarm the autobrake system during landing rollout or RTO

A
  • Moving SPEED BRAKE lever down
  • Advancing the thrust lever (except for the first 3 seconds after landing)
  • applying manual brakes
  • moving the autobrake selector to off
23
Q

How many air/ground sensors are there on the plane?

A

6, 2 in each landing gear strut

24
Q

When is rudder pedal nosewheel steering disabled?

A

When the nosegear strut extends (takeoff)

25
Q

If after setting the autobrake to RTO, test is completed, the light illuminates during taxi out. What are your actions

A

Turn it off, if light extinguishes you can take off with manual brakes, if not you taxi back

26
Q

A fault in the parking brake system might illuminate what?

A

ANTISKID INOP light

27
Q

When will the ATU BRAKE DISARM light illuminate if a landing was made with RTO selected

A

2 seconds after touchdown

28
Q

The brake pressure accumulator can pressurize which 2 systems?

A

Parking brake, brake system

FCOM2 (20 decks)

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