Landing Gear And Brakes Flashcards
What does the proximity sensors tell you
How many are therw
Landing gear up and locked/ down and lock/ WOW
6 wow sensors and
6 up locks
6 down lock
What is the PSEM
Proximity sensor electronic module Controls the landing gear selector valve .
What is the switch in the emergency gear extension for
To by pass the PSAM to lower the landing gear in case of PSAM failure
What are the 3 ways of lowering the gear
Normal
Electrical override
Manual release of gear
What happens when the two wow sensors in the same wheel fail
Will precent the handle to be moved up.
What are the fusible plugs for
To prevent tire to burst in an overheat condition allowing tire to release pressure safely
What prevents the wheel from entering the wheel well spinning
The brake control module applies brakes for 4 seconds while the gear in retracting in the air
When will the landing gear aural warning come on
Flaps 5 or full regarles of throttle pos or radio altimeter
If flaps less than 5
RA < 700agl and TL below 45 degrees
( 59 degree single engine)
If RAdio altimer fail warning can be inhibited by inh button
Modules of the brake system
Two BCM brake control module One auto brake module
What does the brakes control modules do
Locked wheel protection
Anti skid protection
Auto brake
Touchdown protection
How does the ABS works
System compares outboard wheels speed or inward wheels speed and allows a maximum of 33 % differential before it release the locked wheel
When is the anti skid protection not available
Speed less than 10 knots
Do you still have emergency parking brake available in the event hydraulic 1 and 2 failure
Yes with the use of accumulator
Describe the landing gear system
Trycicle landing gear
Electrically commanded Hydraulic actuated
How long will it take for the a landing gear issue after lowering gear
20 seconds
