Landing Gear Flashcards

1
Q

Gear Disagree mean?

A

Gear position disagrees with lever

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2
Q

Max speed with gear down and extension and retraction?

A

270kias / 0.82

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3
Q

What does moving landing gear lever to off position do?

A

Removes hydraulic pressure from landing gear system

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4
Q

When does gear down lights illuminate?

A

When gear down and locked and gear doors have closed

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5
Q

How gear and doors help up?

A

By mechanical uplocks

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6
Q

Where are the tilt sensors?

A

On main landing gear

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7
Q

What does nose air/ground sensing send signals to? (2)

A
  • Stall warning system

- Portions of warning and caution system

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8
Q

Can you take off if AIR/GND SYS or NOSE A/G SYS indicated on EICAS?

A

No

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9
Q

What system removes the landing gear lever lock airborne?

A

Tilt sensor

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10
Q

How is gear put in tilt position when lowered?

A

Hydraulically

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11
Q

How many degrees for NWS via rudder pedals?

A

7 deg

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12
Q

Tiller turns NWS up to how many deg?

A

65 deg

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13
Q

How NWS, flaps, slats, and LDG gear powered if left hyd sys fails?

A

Right system through PTU

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14
Q

How ALT Gear work?

A

Main battery bus DC powers dedication electric hydraulic pump to release uplocks and gear free falls (uses fluid within supply line)

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15
Q

Normal hyd sys for brakes?

A

Right

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16
Q

When does alternate brakes auto come on?

A

When right hyd sys press is low

17
Q

What system does alt brakes use?

18
Q

When does brake source light illuminate?

A

When both normal and alt brakes sys pressures are low

19
Q

When in alt brakes what happens when brake pedals pushed?

A

sends hyd pressure through the alternate anti-skid valves to the brakes

20
Q

What brake systems does the autobrakes only work on?

A

Only the right systems of normal and reserve brakes (as anti-skid uses normal anti-skid valves, not alternate)

21
Q

Can the parking brake use any of the brake systems?

22
Q

What is min brake accumulator pre-charge pressure?

23
Q

What system pressurises the brake accumulator?

A

Right hyd sys

24
Q

How many brake applications can the accumulator provide?

25
What does AUTO BRAKES light mean?
Auto brakes either disarmed or inoperative
26
When does RTO engage?
- RTO selected - Above 85kts - Both thrust levers are retarded to idle
27
How disengage RTO braking once initiated? (4)
- aircraft stops - speedbrake lever stowed - manual braking - move selector top off
28
Whats higher on a dry runway on landing? Man braking or Max Auto?
Manual braking
29
When do autobrakes engage on landing? (2)
- both levers are at idle | - wheels have spun up
30
How does autobrakes apply braking after touch down?
A small amount after touchdown, then scheduled amount once less than 1deg of pitch angle
31
How disengage autobrakes on landing? (4)
- man braking - turn switch to off or disarm - speed brake lever moved down - throttles moved forward
32
Which brake systems have anti-skid?
All 3
33
Which wheels receive anti-skid pairing in alt system?
lateral pairs
34
Does normal/reserve system provide anti-skid for individual wheels?
Yes
35
What does BRAKE SOURCE light mean?
Both normal and alt systems pressures are low
36
DOORS light means?
A door is not closed