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TR > 14 Landing Gear > Flashcards

14 Landing Gear Flashcards

1
Q

🛑 NOSE GEAR

A

Nose gear not down and locked [with either or both forward thrust levers retarted to IDLE, and below 800’ AGL]

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2
Q

When LG DOWN + LOCKED

A

when at least 1 green indicator light is illuminated > this will deactivate LG warning Horn

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3
Q

Override trigger

A

bypassing LG lever lock, for ground logic

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4
Q

LG speeds

A

Extend 270 KIAS- .82M
retract 235 KIAS
Extended 320 KIAS-.82M

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5
Q

Manual extension acces door
- open
- when LG unlock released

A

O - LG retraction disabled, normal LG extension stilll possible if HYD A pressure available
W - when related handle pulled to limit ( 24 inch/61cm)

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6
Q

AUTO BRAKE DISARM (amber)

A
  • SB lever to down detent [during RTO/landing], except during first 3 sec after touchdown for landing
  • Landing made with RTO selected
  • RTO selected on GND (for 1-2 sec than extinguishes)
  • malfunction in auto brake system
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7
Q

RTO
- how to select
- when and what pressure

A
  • pull autorace select switch
  • applies max brake pressure when both thrust levers are retarded to IDLE at or above 88 KTS (below 88 KTS remain armed)
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8
Q

Parking brake warning light

A

light operate from battery power

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9
Q

Hydraulic brake pressure indicator

A

normal 3000 psi, max 3500 psi, normal recharge 1000 psi

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10
Q

-NWS and rudder pedal steering
- main and nose gear
- antiskid and autobrake

A

NWS OVERRIDES rudder pedal steering
- 2 wheel LG unit, nose gear = steerable 2 wheel unit
- antiskid operative with normal + alt brakes. Autobrake ONLY when normal brake

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11
Q

LANDING GEAR
- retraction wheels stopped during retraction
- main gear held up
- nose gear held up

A

R - Brakes automatically stop rotation of the main gear wheels, nose wheel rotation is stopped by snubbers
M - held up by mechanical uplocks
N - held in place by an overcenter lock and closed by doors which are mechanically linked to the gear

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12
Q

Tire damage during Takeoff
- effect during retraction
- consequence if tire not stopped spinning

A

E - braking of the wheel may be affected
C - not stopped before entering wheel well: damage may occur. Hence: Fragible Fitting is installed: when a spinning tire impacts it: the gear stops retracting and free falls back to down position. Affected gear can’t be retracted until fitting is Replaced

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13
Q

HYDRAULIC B supplying fluid to :

A

to raise the Landing gear when all of these occur:
- airborne
- No 1 Engine RPM drops below limit value
- landing gear lever up position
- EITHER main landing gear not up + locked

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14
Q

When LG lever moved to down position:
- which releases uplocks
- How LG extends
- What locks LG

A

W - HYD A is used to release uplcock
H - LG extends by: HYD pressure, gravity + air loads
W - overcenter mechanical + hydraulic locks the gear at full extension

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15
Q

Manual LG extension
- when possible
- retract LG after manual extension

A

W - pssibple with LG lever in ANY position
Retract after manual extension:
1 - close manual extension access door
2 - move LG lever to down with HYD A available pressure
3 - move LG lever to UP

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16
Q

Nose Wheel Steering
- when available
- when SYS A, B

A

W - available on ground with main gear compressed
When
- Positioning LG lever to down > A system available
- when NWS switch to ALTN, will provide SYS B pressure

17
Q

Brake accumulator
- pressurized by
Antiskid
- available
- NORMAL
- ALTN

A

P - pressurized by HYD B, normal mode, when HYD A and B is lost, the accumulator provides several applications of braking or parking brake (1 application at V1)

Antiskid
- also available with loss of HYD A AND B
- normal: applies on separate main gear wheels
- alt: applies on both main gear at the same time

18
Q

To ARM RTO after selecting RTO, all of these conditions must exist:

  • when not recycled after takeoff
A
  • aircraft on ground
  • antiskid + autobrake system operational
  • wheel speed > 60 kts
  • FWS thrust lever at IDLE

W - auto brake disarm” light will illuminate after 2 seconds and NO autobrake will be available

19
Q

AUTOBRAKE
- until when selected
- operation

A

U - can be selected after touchdown prior to decelerating below 30 KTS GS
O - After landing, when main wheels spinning and thrust levers at IDLE: brings aircraft to full stop

20
Q

Parking Brake
- powered by
- consequence fault in PB system

A

P - by EITHER HYD A or B
C - fault in parking brake may cause > ANTISKID INOP light to illuminate

21
Q

AIR/GROUND LOGIC

A

6 sensors in total, 2 on each gear

TR (18 decks)

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