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CRJ 700 ENY STUDY GUIDE > Landing Gear & Brakes > Flashcards

Landing Gear & Brakes Flashcards

1
Q

What hydraulic system powers the landing gear and nose wheel steering?

A

System number 3

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2
Q

What hydraulic systems power the wheel brakes?

A

Systems 2 (Outboard Brakes) and 3 (Inboard Brakes)

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3
Q

How is the main landing gear (MLG) held in the up position?

A

Mechanical Uplocks

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4
Q

How is the nose landing gear (NLG) held in the up position?

A

An Over Center Uplock

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5
Q

What is the function of the nose gear lock actuator assembly?

A

It is a dual acting lock and is used to unlock the over-center lock for both the up and down positions

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6
Q

What is the function of the nose gear brake pads?

A

To stop tire rotation after gear retraction

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7
Q

How can the landing gear be lowered if the normal extension system fails?

A

By using the Manual Landing Gear Release Handle

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8
Q

What is the function of the Downlock Release Button on the Landing Gear Panel?

A

It withdraws the solenoid lock permitting an UP selection of the landing gear lever.

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9
Q

What is the function of the tail skid installed on the tail cone of the aircraft?

A

It is designed to absorb the force of an impact if the rear fuselage contacts the ground.

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10
Q

What occurs upon operation of the Manual Landing Gear Release Handle?

A

The two MLG uplocks are mechanically released and NLG over center lock is hydraulically released.

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11
Q

What is the function of the MLG Overheat Detection System?

A

To monitor the wheel bins for an overheat condition

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12
Q

When is the nose wheel steering operational?

A
  • Hydraulic system number 3 is pressurized
  • The NLG is down and locked
  • A weight on wheels signal is present
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13
Q

What is the maximum nose wheel deflection via the rudder pedals?

A

8 degrees left or right of the center position.

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14
Q

What is the maximum nose wheel deflection via the steering tiller?

A

80 degrees left or right of the center position.

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15
Q

What is the maximum nose wheel deflection when towing the aircraft with the steering torque arms connected?

A

80 degrees left or right of the center position.

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16
Q

What is the maximum nose wheel deflection when towing the aircraft with the steering torque arms disconnected?

A

Full 360 degree movement

17
Q

What is the function of a tire chine?

A

To deflect ground water and other contaminates and prevent them from entering the engine inlets.

18
Q

What is the maximum tire speed for the CRJ-700?

A

182 Knots

19
Q

How is main wheel rotation stopped during gear retraction?

A

Hydraulic pressure from the nose gear up line is directed to the brake control valves to stop main wheel rotation.

20
Q

How many brake applications are available in case of failure of hydraulic systems two and three?

A

Six

21
Q

How can the crew visually verify brake wear limits?

A

By checking the Brake Wear Indicators at each MLG wheel assembly.

22
Q

What is the function of the Anti-Skid System?

A

It prevents wheel lock-up during braking.

23
Q

Is Anti-Skid System protection available with the use of the Parking/Emergency Brake handle?

A

No

24
Q

When is the Anti-Skid System armed?

A
  • Anti-Skid System switch in the ON position
  • Parking Brake OFF
  • One main gear down & locked
25
Q

When is the Anti-Skid System operational after landing?

A

Wheel speed greater than 35 knots or weight-on-wheels for 5 seconds.

26
Q

When is the Anti-Skid System automatically disabled?

A

Less than 10 knots wheel speed or Parking Brake ON

27
Q

What is the function of the Brake Temperature Monitoring System (BTMS)?

A

It continuously monitors the temperature of each brake by means of a thermocouple and displays that temperature as a color coded numerical readout on the Status Page.

28
Q

What will occur to the brake temperature indication, after a brake overheat, once the brakes have returned to normal temperature values?

A

The numerical readout and box will remain red even after the brakes have cooled. Pressing the reset button will reset the color presentation to agree with the numerical value.

29
Q

What is the function of the wheel fusible plugs?

A

If the temperature of the wheel and tire exceed a preset value, the fusible plug melts allowing the tire to deflate.

30
Q

When will the brake temperatures and landing gear indications be displayed on the EICAS?

A
  • On approach with the selection of Flaps 1or Landing Gear DOWN
  • Any time there is a presentation of a red BTMS indication
31
Q

When are the brake temperatures and landing gear indications automatically removed from the EICAS?

A
  • The Landing Gear is up and locked
  • The Flaps are up
  • The BTMS indications are normal

CRJ 700 ENY STUDY GUIDE (17 decks)

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