Landing Gear Flashcards
Q1 | FORWARD INSTRUMENT PANEL
What is the function of the two Landing Gear Control and Interface Units (LGCIU)?
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- Provide sequencing, operation, monitoring, and indications for the landing gear
- Provide aircraft “In Flight” or “On the Ground” signals to other aircraft systems
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Q2 | FORWARD INSTRUMENT PANEL
When does the red arrow in the LND panel illuminate?
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Below 750 feet RA, when the aircraft is in the landing configuration and the landing gear is not locked down
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Q3 | FORWARD INSTRUMENT PANEL
What happens if your airspeed is 280 knots and you place the Landing Gear lever to DOWN?
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Nothing - A safety valve shuts off hydraulic power to the landing gear system when airspeed is above 260 knots
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Q4 | FORWARD INSTRUMENT PANEL
What do the red UNLK lights indicate?
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The landing gear is not locked in the selected position
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Q5 | FORWARD INSTRUMENT PANEL
What controls and manages all braking functions?
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- Normal Brakes: Braking Steering Control Unit (BSCU)
- Alternate Brakes: Alternate Braking Control Unit (ABCU)
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Q6 | FORWARD INSTRUMENT PANEL
What happens when you switch the A/SKID & N/W STRG to OFF?
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- Nosewheel steering deactivated
- Brake pressure is supplied by the Yellow hydraulic system
- Anti-skid is deactivated
- BSCU and ABCU are depowered
- A 1000 psi pressure limiting valve helps prevent wheel lock up
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Q7 | FORWARD INSTRUMENT PANEL
Which hydraulic systems provide pressure to the brakes?
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- Normal brakes – Green
- Alternate brakes – Yellow backed up by a hydraulic accumulator
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Q8 | FORWARD INSTRUMENT PANEL
What are the four modes of braking?
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- Normal braking
- Alternate braking with antiskid
- Alternate braking without antiskid (max brake pressure 1000 psi)
- Parking brake
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Q9 | FORWARD INSTRUMENT PANEL
When do the Autobrakes activate on landing if armed?
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When the ground spoilers deploy
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Q10 | FORWARD INSTRUMENT PANEL
What is the difference between LOW and MED AUTO BRK?
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- LOW - progressive pressure applied to brakes 4 seconds after ground spoilers deploy to decelerate at 5.6 FPS
-
MED - progressive pressure applied to brakes 2 seconds after ground spoilers deploy to decelerate
at 9.8 FPS
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Q11 | FORWARD INSTRUMENT PANEL
What does the AUTO BRK green DECEL light indicate?
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Actual rate of deceleration is within 80% of the selected rate
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Q12 | FORWARD INSTRUMENT PANEL
What is the Takeoff setting for Auto Brakes?
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MAX
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Q13 | FORWARD INSTRUMENT PANEL
What will cause the MAX AUTO BRK to activate on an RTO?
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- Airspeed above 72 knots, and
- Thrust Levers at IDLE, and
- Ground spoiler extension
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Q14 | FORWARD INSTRUMENT PANEL
If you lose Green hydraulic pressure, will you have Auto Brakes?
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No, not with the Alternate Brake system
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Q15 | FORWARD INSTRUMENT PANEL
Is Anti-skid available with Alternate Brakes?
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Yes, if certain conditions are met
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Q16 | FORWARD INSTRUMENT PANEL
With spoilers not armed will the spoilers deploy for an RTO?
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Yes – when at least one engine is in reverse
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Q17 | FORWARD INSTRUMENT PANEL
How many brake applications are available with accumulator pressure?
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Approximately 7 full applications of brake pedals or parking brake or any combination thereof
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Q18 | FORWARD INSTRUMENT PANEL
What does the BRAKES & ACCU PRESS triple indicator indicate?
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- Yellow hydraulic pressure delivered to the left and right brakes
- Yellow system brake accumulator pressure
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Q19 | PARKING BRAKE
When brake accumulator pressure is low, how is it recharged?
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With the Yellow hydraulic system electric pump
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Q20 | PARKING BRAKE
How do you verify the Parking Brake is set?
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- ECAM PARKING BRK memo
- Triple indicator brake pressure
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Q21 | PARKING BRAKE
If the parking brake is activated and no yellow hydraulic or accumulator pressure is available, do you still have available braking?
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Yes, via the brake pedals, but you must have green hydraulic pressure
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Q22 | PARKING BRAKE
What 3 things occur when you turn the Gravity Gear Extension hand-crank?
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- Removes Green hydraulic pressure
- Opens gear doors
- Releases the uplocks
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Q23 | PARKING BRAKE
How many turns of the Gravity Gear Extension hand crank does it take to lower the gear manually?
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3 clock-wise turns
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Q24 | NOSE WHEEL STEERING
What hydraulic system supplies nose wheel steering?
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Yellow
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