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Gulfstream G450 > Landing Gear & Brakes > Flashcards

Landing Gear & Brakes Flashcards

1
Q

If the airplane is landed with 1200psi on the brake accumulator gauge (assuming proper pre-charge) and the normal brakes fail, will the emergency brake be available?

A

No, it must be charged to allow braking

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2
Q

What does the red light in the landing gear handle indicate?

A

If the handle is UP - at least one gear door is not closed
If the handle is DN - at least one landing gear is not down

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3
Q

What does the anti-skid system compare wheel speed to in order to evaluate if a wheel is in a skid condition?

A

Independent wheel speed sensors on each wheel

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4
Q

From what system can the parking / emergency brake system be charged?

A

Aux system

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5
Q

If the parking / emergency brake system is used to stop the aircraft, what type of anti-skid protection is available?

A

None

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6
Q

Where can the brake temperatures be read?

A

On the BRAKES synoptic page

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7
Q

What does pulling the emergency landing gear T-handle do?

A

It repositions the dump valves allowing fluid to be returned to the reservoir and releases the nitrogen to extend the landing gear.

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8
Q

How are the landing gear handle and the landing gear selector valve connected?

A

Electrically

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9
Q

Explain how to set the parking brake.

A

Pull the brake handle UP, turn it 90 degrees, and ensure that the brake accumulator pressure reads at least 1700psi

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10
Q

How would a failure of a gear door to close after gear retraction be indicated on the flight deck?

A

Red light in the gear handle

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11
Q

What is the first action that should be taken if the WoW circuit fails to shift to the airborne mode after takeoff?

A

Turn off the ground spoiler arming switch
(VERY IMPORTANT - ground spoilers could extend if power brought to idle)

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12
Q

What is the function of the dump valve switch on the overhead panel?

A

It resets the dump valves to hydraulic operation so that the landing gear can operate normally

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13
Q

What is the correct accumulator pre-charge pressure for the parking / emergency brake?

A

1200 psi, increasing or decreasing by 25psi for each 10F above or below 70F

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14
Q

How are the landing gear doors opened for a preflight inspection?

A

Install the door control valve pins, and open the doors by operating the ground service valve

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15
Q

If a closed landing gear uplock is discovered during the preflight inspection, how can the uplock be opened?

A

Install the door control valve pins and open the uplock by operating the ground service valve

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16
Q

During the preflight inspection, what is the correct indication on the emergency landing gear extension bottle gauge?

A

3100psi @ 70F

17
Q

What is the indication if the nose landing gear has been turned beyond its design limits with the torque link attached?

A

The nose wheel steering unit over-travel indication on the nose gear will trip, indicating that maintenance action is required

18
Q

How can proper brake wear be determined?

A

By observing the landing gear brake wear indicators, with the parking brake set.

19
Q

In flight, when should the brake accumulator be charged back to 3000psi?

A

Just prior to landing

20
Q

Where in the cockpit can the emergency gear extension bottle pressure be read?

A

On the HYDRAULICS and SUMMARY synoptic pages

21
Q

At approximately how many degrees of travel will the over-travel indicator pop up on the nose wheel steering collar?

A

80-84 degrees

22
Q

At approximately what pressure will the main tire over-inflation safety plug release?

A

450psi

23
Q

At approximately what temperature will any one of the four main fusible plugs melt and release pressure?

A

199 degrees C

24
Q

What is the travel authority of the tiller steering?

A

Variable rate steering installed
+/- 80 degrees < 18 kts, decreasing to +/- 16 degrees as IRS speed increases

25
Q

What is the normal pedal steering authority?

A

+/- 7 degrees

26
Q

What is the pedal steering authority if the tiller steering should fail?

A

+/- 16 degrees

27
Q

If an amber “ANTI-SKID FAIL” message is displayed in flight, should the ANTI-SKID system be turned OFF?

A

No, the anti-skid system may still be partially operative

28
Q

What is the normal nose wheel tire pressure?

A

115 psi

29
Q

What is the recommended maximum speed for use of the tiller steering?

A

60 KCAS

30
Q

If the blue “NWS FIXED GAIN” CAS is displayed, what is the effect on the tiller steering?

A

IRS input to the tiller is lost, and the steering authority will be constant at all speeds

Gulfstream G450 (20 decks)

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