Landing Gear Systems Flashcards
What is the purpose of main landing gear torque links?
To keep the landing gear pointed in a straight direction
What is used to inflate landing gear shock strut?
Dry air or nitrogen
What power sources are normally used to retract landing gear systems?
Hydraulic or electrical motors
What prevents a nose landing gear from being retracted with a nose wheel out of the center position?
Nosewheel centering cams or external track
When should a landing gear retraction check be accomplished?
Annual inspection, replacements, hard landings, or other programs inspections
What methods are used for transmitting cockpit control movements to a steering unit in a large aircraft?
Mechanical, electrical or hydraulic
What type of nose wheel steering is on small aircraft?
A mechanical linkage hooked to the rudder pedals
What unit prevents nose wheel vibration?
A shimmy damper
What prevents a split wheel from leaking air through the inner and outer mating surfaces or the wheel assembly?
An O-ring
What is an indication of excessive heating of a wheel bearing?
Discoloration
What is the purpose of a wheel fusible plug?
To relieve air pressure to prevent a tire blowout
What are some types of brake actuating systems?
Independent master cylinders - not part of aircraft main hydraulic system
boosted brakes - uses aircraft hydraulic system intermittently when needed
power controlled brakes - only uses the aircraft main hydraulic system
What is the purpose of a power break debooster?
It reduces the hydraulic system pressure to a lower value for more satisfactory break action
What is the purpose of an anti-skid system?
It prevents the wheels to skid or lock during brake attempts
What are some methods of bleeding brakes?
Gravity and pressure methods
What must be accomplished before inspecting a wheel brake system for hydraulic leaks?
Pressurize the system
What is the most necessary maintenance function for a long and safe tire service?
Proper inflation
What are the effects of underinflated tires?
Uneven wear near the edge of the tread and creep or slide on the brakes when applied
What conditions does the mechanic look for during a regular inspection of the exposed piston section of a landing gear?
Cleanliness, damages, and proper inspection
What safety precautions must be taken when removing a wheel from an axle or when disassembling a wheel?
Verify the tires completely deflated before removing a wheel from the axle or before wheel disassembly
