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Boeing 757/767 > 757 Landing Gear > Flashcards

757 Landing Gear Flashcards

1
Q

Gear handle ____________ position depressurizes system

A

Off

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2
Q

NOSE/LEFT/RIGHT annunciators each have one __________ light and one __________ light

A

AC

DC

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3
Q

DOORS light indicates any gear door is not __________

A

Closed

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4
Q

GEAR light indicates disagreement between __________ and __________

A

Handle

Gear

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5
Q

__________ switch overrides gear handle lock solenoid

A

LOCK-OVRD

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6
Q

Alternate gear extension uses dedicated __________ to release gear unlocks

A

DC pump (power pack)

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7
Q

__________ are automatically selected with loss of right hydraulic system pressure (shuttle valve)

A

Alternate brakes

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8
Q

__________ anti-skid is applied in lateral pairs

A

Alternate brakes

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9
Q

With alternate brakes, __________are inop

A

Auto brakes

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10
Q

Auto brakes 1 through MAX AUTO based on __________

A

Rates of deceleration

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11
Q

Max AUTO braking is less effective than___________

A

Manual Braking

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12
Q

Auto Brakes activate based on __________ and __________

A

Wheel Spin Up

Thrust Levers Idle

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13
Q

An AUTO BRAKES light indicates that auto brakes are__________ or have been __________

A

INOP

Disarmed

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14
Q

Auto Brakes deactivate for what five items?

A

Fault in the system
Speed brake moved towards down position
Off or Disarmed selected
Toe brake

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15
Q

Accumulator gauge Amber band indicates __________

A

Nitrogen pre-charge

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16
Q

Accumulator Pressure above amber band provides several __________ and provides for ___________ use

A

Braking Applications

Parking Brake

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17
Q

Parking Brake light indicates ___________ only

A

Handle position

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18
Q

Brake source light indicates loss of __________ and __________ braking

A

Normal

Alternate

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19
Q

Reserve brakes switch activates right electric hydraulic pump, regardless of switch position and uses right reserve fluid to power the __________ brake system

A

Normal

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20
Q

What can be done to raise the landing gear after takeoff if the landing gear lever will not move to the up position?

A

Push LOCK OVRD then raise handle

Use QRH

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21
Q

What is the meaning of an illuminated landing gear disagree light?

A

Gear position disagrees with the lever position

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22
Q

Describe how the Alternate Gear Extension System operates

A

Fluid in the normal supply line is pressurized by a dedicated DC powered electric hydraulic pump to release the gear door and gear uplocks

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23
Q

Which lights may remain illuminated after performing the Alternate Gear Extension procedure

A

DOORS light

24
Q

What is the meaning of an illuminated DOOR light?

A

A door is not closed

25
Q

Which hydraulic system powers the Normal Brake System?

A

Right

26
Q

What is the meaning of an illuminated brake temp light?

A

A wheel brake temperature is in high range (5 or above)

27
Q

How is the alternate brake system activated?

A

Automatically with low right hydraulic system pressure. (There are no indications other than right hydraulic system pressure low)

28
Q

Which hydraulic system powers the alternate brake system?

A

Left

29
Q

What is the meaning of an illuminated Brake Source light?

A

Normal and Alternate Brake Hydraulic System pressure are low

30
Q

What happens when the RESERVE BRAKES switch is pushed?

A

Right hydraulic system fluid is provided to the right hydraulic system electric pump. Pump pressure is then supplied to the normal brake system only

31
Q

What is the purpose of the brake accumulator?

A

If normal and alternate brake hydraulic power is lost, the brake accumulator provide several brake applications

32
Q

What does the Amber band on the Brake Pressure Gauge represent?

A

Accumulator precharge only. No brake pressure available in this range.

33
Q

How do you conserve accumulator pressure when operating with only accumulator brakes?

A

Apply steady increasing pressure

34
Q

Which Brake System have Anti-Skid capability?

A

Normal, Alternate, Reserve, Accumulator

(since the accumulator provides brake pressure through the normal brake system, it also has anti-skid capability

35
Q

What is the meaning of an illuminated ANTI-SKID light?

A

Fault is detected in the anti skid system

36
Q

What is the meaning of an illuminated AUTOBRAKE?

A

Autobrake system is faulted or is disarmed

37
Q

Which brake systems can power the autobrake system?

A

Normal and Reserve brake systems

38
Q

When are the autobrakes activated during a rejected takeoff?

A

On the ground, above 85 knots, and both thrust levers are retarded to idle.

39
Q

What kind of braking capability is provided with the Autobrakes selected tomRTO?

A

Maximum braking pressure

40
Q

Which has the greatest braking capability, MAX AUTO or full manual braking?

A

Full manual braking

41
Q

When are the autobrakes applied during landing?

A

Wheel spin up after landing and both thrust levers at idle

42
Q

When are autobrakes deactivated?

A

FSTOP

Fault (autobrake or anti skid)
Speed brake 
Thrust lever
Off selected
Peddle brakes
43
Q

What is the meaning of an illuminated AUTOBRAKES light?

A

Autobrakes are disarmed or inoperative

44
Q

What happens when the landing gear wheels tilt?

A

Air ground sensing to give signals to airplane systems.

45
Q

What sensing does the nose gear have?

A

When fully extended provides air and stall warnings

46
Q

How long for normal gear retraction? What is the indication if not?

A

25 seconds

Amber gear disagree

47
Q

Landing gear lever is unlocked for gear retraction by which gear?

A

Main gear

48
Q

Which electrical bus provides the power to the electric motor for alternate gear extension?

A

Hot battery buss

49
Q

Will alternate gear extension operate when left hydraulic reservoir is empty?

A

Yes, enough fluid in the lines

50
Q

When are autobrakes activated?

A

When both thrust levers are at idle
Wheel spin up
Less than 1 degree pitch

51
Q

RTO mode activates after what speed?

A

85 knots

52
Q

How is alternate brake system activated?

A

Loss of the right hydraulic system pressure opens alternate source sector valve automatically

53
Q

The autobrakes are armed for landing. When do the autobrakes actuate?

A

When both thrust levers are at idle
Wheel spin up
Wheel tilt is sensed
IRS pitch is less than or equal to 1 degree

54
Q

Can the autobrakes bring the aircraft to a full stop?

A

Yes

55
Q

Are the autobrakes available in the alternate brake system?

A

No

56
Q

When does the landing gear lever lock permit movement of the gear lever to the up position?

A

When the main gear trucks tilt

57
Q

What is the indication that the autobrake system is armed and functional?

A

The selector latches at the deceleration rate selected

Boeing 757/767 (5 decks)

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