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737-800 SAI > Landing Gear > Flashcards

Landing Gear Flashcards

1
Q

Each landing gear has how many wheels?

A

2

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2
Q

Parking brake light illuminates what color when set?

A

Red, light operates from battery power

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3
Q

Will RTO work if takeoff is rejected prior to 90kts

A

NO

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4
Q

The normal brakes are powered from what system? what about the alternate brakes?

A

1: B
2: A

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5
Q

How is the alternate braking anti-skid different from the normal braking anti-skid ?

A
  • Normal provides anti-skid for each individual tire

- alternate braking anti-skid is applied to main gear wheel pairs

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6
Q

AUTO BRAKE DISARM light

A

illuminated:

  • speed brake lever moved to the down detent during rto or landing
  • manual brakes applied
  • thrust levers advanced during RTO or landing except during the first 3 seconds after touchdown
  • landing with RTO selected
  • A malfunction exists in automatic braking
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7
Q

What braking system is autobrake available on?

A

normal brake system

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8
Q

Is anti-skid protection available on both braking systems?

A

yes

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9
Q

When will you get a BRAKE TEMP light?

A

4.9 value or higher. scale is 1-9.9

brake temp found on MFD SYS page

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10
Q

If both normal and alternate braking system pressure is lost can the brakes be used or parking brake set?

A

Yes the brakes can be used for several limited applications and the parking brake can be set due to trapped hydraulic pressure in the accumulator

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11
Q

How can the gear be retracted after a manual extension?

A
  • close the manual extension door
  • move the landing gear lever to DOWN with hydraulic system A pressure available and then
  • position the landing gear lever to up
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12
Q

On the ground what prevents the landing gear lever from moving to the UP postion?

A

a landing gear lock

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13
Q

Can the parking brake be set with either HYD system?

A

yes

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14
Q

How is the gear held at full extension?

A

overcenter mechanical locks and hydraulic locks

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15
Q

What hyd system provides retraction, extension and nose wheel steering normally?

A

system A

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16
Q

Will the A system automatically supply pressure to the alternate brake system if the b system fails or is low?

A

yes

17
Q

What does the brake system include?

A
  • normal brake system
  • alternate brake system
  • brake accumulator
  • antiskid protection
  • autobrake system
  • parking brake
18
Q

Tiller moves the nose wheel how many degrees?

A

up to 78 degrees

19
Q

Full pedal to either side moves the nose gear how much?

A

7 degrees

20
Q

How is the gear held up?

A

the main gear is held up with mechanical locks, while the nose gear is held up by an overcenter lock

21
Q

NOSE WHEEL STEERING switch

A

ALT: hyd system B provides power for nose wheel steering

NORM (guarded position): hyd system A provides power for nose wheel steering

22
Q

How is the brake accumulator pressurized?

A

system B

23
Q

How can the landing gear lock be overidden?

A

In flight, the air/ground system energizes a solenoid which opens the lever lock

24
Q

To ARM RTO what conditions prior to takeoff must be met ?

A
  • airplane on the ground
  • anti-skid and autobrake system operational
  • AUTO BRAKE select switch positioned to RTO
  • wheel speed less than 60 kts
  • forward thrust levers positioned to idle
25
Q

HYD BRAKE PRESS indicator pressure levels (normal, max, precharge)

A

Normal: 3000psi
Max: 3500psi
Precharge: 1000psi

26
Q

How are the main gear tires stopped during gear retraction?

A

Brakes for the Mains, snubbers for the nose

27
Q

What is more effective MAX manual braking or MAX autobrake?

A

Max manual braking

28
Q

Manual Extension Access Door (OPEN)

A
  • manual landing gear extension is possible with landing gear lever in any position
  • normal landing gear extension is still possible if hydraulic system A pressure is available
  • landing gear retraction is disabled
29
Q

When the manual gear release is pulled what happens?

A

the uplocks are released and the gear free-falls down to the locked position

30
Q

The Air/ground system receives logic from sensors on the landing gear. what landing gear and how many sensors are there?

A

2 sensors on each gear for a total of 6

31
Q

What system provides Autobrake

A

Hyd System B

32
Q

Will autobrakes work with the alternate braking system?

A

No

737-800 SAI (15 decks)

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