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BBD700 > BBD-700 Landing Gear and Brakes > Flashcards

BBD-700 Landing Gear and Brakes Flashcards

1
Q

What type of brakes are used on the Global Express?

A

Carbon Disc brakes

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2
Q

How are the main wheel brakes controlled and actuated?

A

Electrically controlled via brake by wire system

Hydraulically actuated

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3
Q

How is weight on wheels (WOW) sensing accomplished?

A

Via two proximity sensors on each gear assembly

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4
Q

How is normal extension and retraction of the landing gear controlled?

A

Electrically controlled by the landing gear electronic control unit (LGECU)

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5
Q

Which hydraulic systems operate the landing gear?

A

Hydraulic systems 2 and 3

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6
Q

How are the main gear inboard doors operated?

A

Hydraulically by system 3

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7
Q

How is excessive air pressure due to heat buildup in the main wheel/tire assembly released?

A

Four heat sensitive fuseplugs

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8
Q

How is main landing gear overheat detected in the gear bays?

A

Single-loop heat sensing elements

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9
Q

How are the nose gear and forward doors normally actuated?

A

Hydraulically by system 3

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10
Q

When is the “Too Low Gear” warning sounded?

A

Any landing gear is not down and locked, and

Radio altimeter less than 500 feet AGL

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11
Q

What is the maximum operating speed for extending / retracting the landing gear?

A

200 KIAS

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12
Q

What is maximum airspeed with the landing gear extended

A

250 KIAS / .7 M

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13
Q

What is the maximum operating altitude with the landing gear extended?

A

20,000 feet

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14
Q

After “manual” landing gear extension, which gear doors caution messages are displayed?

A

L-R MAIN GEAR DOOR

NOSE DOOR

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15
Q

What will be the NWS operation mode after “manual” gear extension.

A

Free caster mode

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16
Q

How is the NWS system controlled and actuated?

A 
Electrically controlled
Hydraulically actuated (system 3)
17
Q

What are the NWS limits for the Tiller and Rudder?

A

Tiller +/- 75 degrees
Rudder +/- 7.5 degrees
Note: NWS inputs are summed

18
Q

What is recommended for all towing operations?

A

Disconnect the NWS torque link

19
Q

How are the brake wear indictor pins normally checked?

A

Parking brake applied

Hydraulic system 3 pressurized

20
Q

Which hydraulic systems operate the brake system?

A

Hydraulic system 2 (outboard brakes)

Hydraulic system 3 (inboard brakes)

21
Q

How is the PARK/EMER BRAKE actuated?

A

Mechanical linkages transfer manual inputs to the parking brake valve

22
Q

Under what conditions will the autobrake apply?

A

Autobrake either LOW, MED, or HI
Both MLG indicate weight off weels (AIR)
Ground spoilers are commanded to deploy

23
Q

How is the BRAKE OVHT warning message cancelled?

A

By momentarily pressing the BTMS OVHT WARNING RESET

Note: Provided the overheat condition no longer exists

BBD700 (22 decks)

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