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Q400 > Landing Gear - Brakes > Flashcards

Landing Gear - Brakes Flashcards

1
Q

What is the backup power source if the EDP fails?

A

PTU

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2
Q

Main and nose gear retract?

A

Main gear retracts aft
Nose gear retracts forward

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3
Q

Which gear doors are hydraulically operated?

A

The aft main gear doors and the fwd nose gear door

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4
Q

Which gear doors are mechanically linked?

A

The fwd main gear and the aft nose gear door

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5
Q

What monitors and controls the landing gear components?

A

PSEU proximity sensor electronics unit

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6
Q

How far can the tiller turn the nose wheel?

A

70 degrees left or right of centre for low speed taxi

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7
Q

How far can the rudder pedals turn the nose wheel?

A

8degrees left or right of centre for high speed taxi

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8
Q

Free castor mode happens when?

A

When turned off or there is a fault of the nose wheel angle exceeds 70 degrees

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9
Q

What happens during free castoring mode?

A

Nose wheel can turn up to 120 degrees

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10
Q

Red Landing gear advisory lights what does that mean?

A

Indicates when the position of the gear and the gear handle position are not in agreement

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11
Q

Landing gear selector handle illuminated means?

A

When gear operation does not agree with position of selector handle

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12
Q

What keeps the gear in the up position?

A

Mechanical uplocks keep the gear up and hydraulic doors closed

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13
Q

What keeps the landing gear down?

A

Over centre locking
Continuous hydraulic pressure remains applied to the doors and gear in the down and locked position

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14
Q

LDG GEAR INOP caution light

A

If the PSEU can’t control the sequencing valve or if a sequencing valve fails. Alt gear extension will be req

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15
Q

When is an alt gear extension required?

A
  • # 2 HYD pressure or fluid loss
  • One or more landing gear fail to extend normally
  • LDG GEAR INOP caution light
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16
Q

What does the inhibit switch do?

A

Disabled normal landing gear extension, the handle can be moved and the gear won’t be activated

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17
Q

Opening the landing gear alternate release door does what?

A

Relives the #2 hydraulic system pressure from landing gear uplocks

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18
Q

Pulling the yellow and black striped handle in the main gear release door does what?

A

Releases the main landing gear hydraulic doors and main gear uplocks. The main gear then free falls but may not extend fully to down and locked position

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19
Q

What lights will be illuminated on the landing gear control panel after an alternate gear extension?

A

All hydraulic doors open (amber lights) and all landing gear are down-locked (green)

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20
Q

Gear warning tone will sound with gear not down and locked when?
3 scenarios

A

Scenario 1: extending flaps without gear (flaps greater than 8.5 degrees, either Eng torque <50% and power lever angles less than detent)

Scenario 2: flying to low and slow without the gear (both power levers less than flight idle plus 12 degrees and airspeed less than 156kts and RADALT less than 1053ft

Scenario 3: OEI approach (one power lever less than flight idle plus 12 degrees and both power lever angles less than the rating detent and IAS <156kts and RADALT <1053ft

Horn can only be muted in scenario 3

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21
Q

NOSE STEERING caution light

A

Failure if the steering control unit (SCU)
Exceeds 70 degree angle

Or when nose wheel steering switch is off and hydraulic pressure is detected

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22
Q

When are the carbon brakes less effective?

A

When cold

23
Q

When brake pads are new how long will the indicators be?

A

Up to 25mm long

24
Q

When is anti skid system functional?

A

When speed of main gear wheels exceeds 10kts

25
Q

How long will the anti skid lights illuminate for when tested?

A

6 seconds on ground
3 seconds in the air when the gear is down and locked

26
Q

What activates the anti skid on the ground?

A

WoW sensor and the wheels >35kts

27
Q

With contaminated runway or standing water when is anti skid activated?

A

5 seconds after receiving WOW signal. The 5 second delay is cancelled when the wheel speed is greater than 35kts

28
Q

How many emergency brake applications?

A

6

29
Q

Minimum starting requirements for park brake pressure?

A

Starting #2 first = 500psi
Starting #1 first = 1000psi

30
Q

If you have to use emergency braking how do you avoid rapidly depleting the pressure?

A

Apply brakes gently don’t pump the brakes

31
Q

Max landing gear extension altitude?

A

15,000ft

32
Q

Max landing gear operation speed? VLO

A

200kts is the maximum speed to extend or retract the gear

33
Q

VLE landing gear extended speed?

A

215kts max speed once gear is extended

34
Q

Alternate gear extension max airspeed?

A

185kts because of the hydraulic gear doors remaining open

35
Q

The parking brake is supplied by ?

A

The #2 hydraulic system

36
Q

The nose wheel enters free castoring mode when ?

A

All of the above
There is a fault with the nose wheel steering
The nosewheel angle exceeds 70 degrees
The STEERING switch is selected OFF

37
Q

Hydraulic power for operation of the nose wheel steering is supplied by ?

A

2 hydraulic system

38
Q

With use of the tiller, the nosewheel steering can command steering angles of up to ?

A

70 degrees

39
Q

Monitoring of the landing gear components is performed by the ?

A

Proximity Sensor Electronics Unit (PSEU)

40
Q

Testing the anti-skid system on the ground sees the INBD and OUTBD ANTISKID caution lights illuminate for ?

A

6 seconds

41
Q

The landing gear warning horn can be muted by selecting the HORN switch to MUTE ?

A

Only during an engine-out condition where one power lever is at flight idle

42
Q

The hydraulic hand pump handle is ?

A

Located on the aft bulkhead behind the co-pilot

43
Q

Anti-skid is not available ?

A

When the emergency brake is used

44
Q

Ground locking pins are provided for ?

A

Main landing gear, main gear hydraulic doors, nose gear hydraulic doors

45
Q

The type of brakes fitted to the aircraft ?

A

Are least effective when cold

46
Q

How many applications of the parking brake will a fully charged park brake accumulator allow?

A

6

47
Q

The landing gear warning horn will be first heard with gear up, engine torque less than 50%, and flaps selected to ?

A

10 degrees

48
Q

When the landing gear is retracted it is held in place by ?

A

Mechanical uplocks

49
Q

The landing gear down selector inhibit switch is located ?

A

On the overhead panel above the co-pilot

50
Q

The maximum landing gear extended speed (VLE) is ?

A

215 KIAS

51
Q

Following a successful alternate landing gear extension, landing gear control panel lights illuminated are ?

A

Green gear lights, amber door lights

52
Q

During an alternate landing gear extension the nose landing gear extends when ?

A

The landing gear release handle in the floor is pulled fully up

53
Q

Which of the landing gear doors are mechanically operated?

A

Main gear forward doors, and nose gear aft doors

54
Q

On the landing gear control panel illumination of a red gear light indicates the associated landing gear is ?

A

In an unsafe position

Q400 (24 decks)

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