A320/321 Landing Gear & Brakes

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No

Does anti-skid operate with Alternate Brakes when there is a BSCU failure?

No

Does the anti-skid operate when braking is available from the accumulator?

Automatic

During landing gear retraction, main wheel spin is arrested by _____ application of the brakes.

2

How many Landing Gear Control and Interface Unit(s) (LGCIUs) are used to control extension and retraction of the gear and operation of the doors?

260 knots

Hydraulic pressure is automatically removed from the landing gear system at airspeeds above _____ or whenever the landing gear lever is in the up position.

GREEN

Hydraulic pressure is provided to the Nosewheel Steering by the _____ system, when the nose gear doors are closed.

FALSE

If GREEN system pressure is lost, nosewheel steering is still available. TRUE/FALSE

GREEN

Normal Landing Gear Extension/Retraction is provided by the ______ hydraulic system.

FALSE (After the first engine start)

Only after the second engine is started, the NW STRG DISC display changes to amber to alert the crew of the disconnected steering prior to taxi. TRUE/FALSE

260 knots

A Safety Valve is installed in the system to isolate the GREEN system pressure from the Landing Gear when the airspeed exceeds _______, or when the Landing Gear Lever is UP.

300

A wheel brake temperature arc appears in amber when the temperature exceeds ______ C.

7

Approximately, how many brake applications are available when operating on accumulator brakes?

FALSE

Auto Brakes are available with the alternate brake system. TRUE/FALSE

No

Is the Autobrake system operable when the Alternate Brakes are active?

FALSE

It is necessary to depress the brake pedals manually before releasing the parking brake. TRUE/FALSE

YELLOW

Parking Brake operation is provided by the ______ hydrualic system.

TRUE

The LGCIUs also provide position sensing for the cargo doors, locking components, and the cargo door control handles. TRUE/FALSE

LGCIU #1 (Landing Gear Control & Indicator Unit)

The Landing Gear Indicator Panel displays the red and green lights for the landing gear. The lights are operational as long as _____ is electrically powered.

After the first engine start

The N/W STRG DISC memo appears when the Tow Control Lever is set to bypass the Nosewheel Steering. At what point does the memo change color from green to amber?

GREEN

The Normal Brake system pressure provided by the ________ hydraulic system.

+/- 75 degrees; +/- 6 degrees

The maximum steering angle available through use of the Steering Hand Wheels is ___, while the maximum steering angle available through use of the rudder pedals is __.

GREEN; YELLOW

The normal brake system operates from _____ hydraulic system pressure, while the alternate system operates from ______ system pressure.

No

The steering actuator receives hydraulic pressure if the green hydraulic system is pressurized, the towing control lever is in the normal position, the A/SKID & N/W STRG switch is ON, and the aircraft is on the ground. Must the parking brake also be released?

6 degrees

What is the max steering angle that can be commanded by the rudder pedals at low ground speed?

When one or more gear are not locked down after gear extension.

When do the red down arrow(s) appear on the Landing Gear indicating panel?

7

When the alternate brake system is operating, and the YELLOW system is not pressurized, the accumulator pressure is sufficient for ______ applications.

FALSE

When there is an electrical failure of one of the LGCIUs the system does modify the outputs of the failed LGCIU to the fail safe "flight mode". TRUE/FALSE

YELLOW

Which hydraulic system provides pressure for the Alternate brakes and the parking brake?


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