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FCOM NG System Description > 14. Landing Gear > Flashcards

14. Landing Gear Flashcards

1
Q

Red Landing Gear Indicator Light

A
  • Not down and locked with either or both Thrust Levers IDLE and < 800FT AGL or,
  • Landing Gear is in disagreement with lever position (in transit or unsafe)
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2
Q

Landing Gear Indicator Lights (6)

A
  • One set is above lever, another is at aft Overhead panel,
  • As long as 1 green light for a gear displayed, gear is down and locked
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3
Q

Manual Gear Extension Door Open

A
  • Manual gear extension is possible with Landing Gear Lever in any position,
  • Landing Gear retraction is disabled
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4
Q

Manual Gear Extension Handles Length

A

61cm

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5
Q

AUTO BRAKE DISARM Light

A

Illuminates:
- SPEED BRAKE Lever moved to down detent during RTO or landing,
- Manual Brakes applied during RTO or landing,
- Thrust lever(s) advanced during RTO or landing (except first 3s after touchdown),
- Landing made with RTO selected,
- Malfunction exists in automatic braking system,
- While selecting RTO on the ground, 1-2s illumination is normal

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6
Q

Parking Brake Light Power Source

A

Operates from Battery Power

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7
Q

HYD BRAKE PRESS Values

A
  • Normal: 2900-3600psi,
  • Maximum: 3600-4000psi,
  • Precharge: 1000psi
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8
Q

Nose Wheel Steering Authority

A
  • Steering Wheel: 78 degrees,
  • Rudder Pedals: 7 degrees
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9
Q

Braking During Gear Retraction

A
  • Main Gears by brakes,
  • Nose Gear by snubbers
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10
Q

Damaged Main Gear Retraction

A
  • A spinning tire with loose tread impacts a fitting in the wheel well ring opening,
  • That gear stops retracting and free falls back to down position,
  • Affected gear cannot be retracted until fitting is replaced
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11
Q

Landing Gear Up Position Locks

A
  • Main Gear: By mechanical uplocks. Rubber seals and oversized hubcaps complete the fairing
  • Nose Gear: Overcenter Lock and enclosed by doors which are mechanically linked to the gear
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12
Q

Landing Gear Extension

A
  • System A pressure is used to release uplocks,
  • Extension by hydraulic pressure, gravity and air loads,
  • Overcenter mechanical and hydraulic locks hold the gear at full extension
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13
Q

Gear Retraction After Manual Gear Extension

A
  • Close the Manual Gear Extension Access door,
  • Move LANDING GEAR lever to DOWN with System A pressure,
  • Move LANDING GEAR lever to UP
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14
Q

Nose Wheel Steering Availability

A
  • Available when Nose Gear is down and compressed by weight of the airplane,
  • LANDING GEAR lever in DOWN makes System A pressure available to the Steering Metering Valve
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15
Q

Hydraulic Leak Downstream of the LGTU

A
  • Results in a loss of System B fluid in the reservoir,
  • A sensor closes the Landing Gear Transfer Valve and alternate steering will be lost
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16
Q

Brake Accumulator and Pressure Source

A
  • Pressurized by System B,
  • If both Brake system pressure lost, trapped pressure provides several braking or parking brake application
17
Q

Antiskid Protection

A
  • With Normal Brakes, for each Main Gear Wheel,
  • With Alternate Brakes, for each Main Gear Wheel pairs,
  • Antiskid protection is available even with loss of both hydraulic systems,
  • Both Normal/Alternate provide Skid, Locked Wheel, Touchdown and Hydroplane protection
18
Q

Autobrake System with Alternate Brakes

A

Not available

19
Q

Autobrake RTO Arming Criteria

A
  • Airplane on the ground,
  • Antiskid and Autobrake systems operational,
  • Wheel speed < 60KT,
  • Thrust Levers IDLE
20
Q

Autobrake RTO Engagement

A

If T/O rejected prior to wheel speed reaching 88KT:
- Not engaged,
- AUTO BRAKE DISARM light does not illuminate,
- RTO remains armed

After reaching 88KT:
- Engages when Thrust Levers are retarded to IDLE

21
Q

Landing with Autobrakes RTO

A
  • Does not engage,
  • AUTO BRAKE DISARM light illuminates 2s after touchdown
22
Q

Autobrake Engagement After Landing

A
  • Both Thrust Levers IDLE,
  • The Main Wheels spin-up
23
Q

Selecting Autobrakes After Landing

A

Can be done until 30KT of GS

24
Q

Parking Brake Pressure Source

A
  • Either System A or B,
  • If System A and B not pressurized, powered by Brake Accumulator
25
Q

ANTISKID INOP Other Reason

A

Also a fault in the Parking Brake system causes the light illuminate

FCOM NG System Description (16 decks)

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