Landing Gear Flashcards
Which landing gear systems are lost with a green hydraulic failure?
Nose wheel steering and auto brakes
The alternate brake system is activated
Automatically if green hydraulic pressure is insufficient.
What brake system is available if the A/SKID & N/W STRG switch is turned OFF?
Alternate brakes without antiskid or nose wheel steering
The ______ supplies at least _____ brake applications if both the green and yellow hydraulic systems fail?
Yellow brake accumulator, 7
The alternate brake system is powered by the
Yellow hydraulic system
Which hydraulic system provides brake pressure indications on the BRAKES and ACCU PRESS indicator?
Yellow
What pilot action is required on landing with a loss of normal braking and a failure of the antiskid system?
Monitor the brake pressure using the BRAKES and ACCU PRESS indicator
The antiskid system is deactivated when groundspeed is below_______ knots
20
Which system is not active if a takeoff is rejected below 72 knots?
Autobrakes
What systems do the BSCUs control?
Nose wheel steering, antiskid, auto brakes, normal brakes
What does the green NW STRG DISC ECAM memo indicate?
A lever on the towing electrical box is in the towing position and the nose wheel steering system is deactivated.
If the PEDALS DISC button is pushed and held, what happens?
Rudder pedal control of the nose wheel steering is disconnected
What does an amber NW STRG DISC ECAM memo indicate?
The nose wheel steering system is deactivated with an engine running
What happens to the nose wheel steering system when the gear is lowered using the gravity extension handle?
It is deactivated
Automatic braking is initiated by the
Ground spoiler extension command
The green DECEL light on the AUTO/BRK panel illuminates when
Airplane deceleration equals 80% of selected rate/
the auto brake system can be disarmed by
applying sufficient brake pedal pressure to one pedal
The Captain must verify that the parking brake is set with adequate pressure by
Ensuring that normal pressure is indicated on the BRAKES and ACC PRESS indicator.
Maximum landing gear extension speed (UAL) is _______ Knots
240
Maximum landing gear retraction speed is ______ knots
220
Why are there two triangles for each gear on the ECAM WHEEL page?
Each triangle represents the gear position detected by one of the two LGCIUs
The landing gear hydraulic safety valve is controlled by
The gear lever and ADIRUs 1 and/or 3
The landing gear extension and retraction is controlled electrically by
LGCIU 1 or 2
The gear lever is locked in the DOWN position by an interlock system to prevent unsafe retraction of the landing gear when
Either gear shock absorber is compressed with the airplane on the ground or the nose wheel is not centered
With the gear NOT down and locked, which of the following causes the red landing gear down arrow to illuminate?
RA
Which hydraulic system provides power for gear extension and retraction
Green System
Which hydraulic system provides power for nose wheel steering
Green System
Which hydraulic system provides power for normal brakes.
Green System
Which Hydraulic system provides power for Alternate brakes
Yellow System
What does BSCU stand for
Brake Steering Control Unit. (dual channel)
What system is the brake accumulator on?
Yellow System
The antiskid system is automatically deactivated when
Ground Speed is below 20 knots
A/SKID & NW STRG switch is selected off
The auto brake system operates through the _______ brake system to maintain a selected _________ rate during landing to reduce stopping distance
Normal
Deceleration
Auto brakes can be selected and armed when:
Green Hydraulic Pressure is available
Antiskid is powered
No failures exist in the braking system
At least one ADIRU is available
Auto brakes are disarmed:
AUTO/BRK switch is deselected
When one or more arming conditions are lost
When ground spoilers are retracted
10 seconds after raising landing gear lever
When applying sufficient brake pedal deflection.
If both Green and Yellow systems fail, alternate braking is supplied by the
Brake Accumulator
How many brake applications will the brake accumulator provide
Seven
