Landing Gear Flashcards
LGCIU -Landing Gear Control Interface Unit proximity detectors send signals to
LGCIU 1 then send to the 3 indicators on panel
Unsafe gear retraction is impeded by an interlock mechanism. The landing gear will not retract when the aircraft is on the ground even if
The lever is moved to the up position
Landing gear proximity detectors send signals to the LGCIU 1 which transmits information that is displayed on the
Three gear indicators on the center instrument panel
The two – position landing gear selector lever sends an electrical signal to the LGCIU 1 which control
Green hydraulic supply by means of selector valves
BSCU Brake and Steering Control Unit controls nosewheel via
1 active channel
Nosewheel steering angle is accomplished by controlling servo valve to
provide requested flow for hydraulic actuators
4 braking modes are
Normal braking, alternate braking with antiskid, alternate braking without antiskid, parking brake
The accumulators provide enough pressure for a minimum of
Seven full brake applications
Braking functions are
Antiskid, autobraking, normal braking, alternate braking
If the brakes start to lock-up
The normal and alternate servo valves open
GND spoilers extend during landing roll when speed
More than 40 kt in low, medium, and maximum
To arm autobrake system, one airdata inertial reference unit and
2 flight control primary computers are required to be operational
Alternate braking with antiskid is active when
Blue system pressure is available
An electrical signal from two landing gear control and interface units or LGCIUs actuates the
Landing gear and doors
LGCIU sequence the
Control and gear lever selection
