A320/321 Landing Gear & Brakes
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?
