LANDING GEAR
a. The landing gear on aircraft may be fixed or retractable. A fixed gear may be wheels, floats, or skis; and for amphibians a combination of floats and wheels.
b. Retractable gear on aircraft is usually operated with hydraulic or electric power, although some models of light general aviation aircraft have manual retract systems operated by a lever in the cockpit.
(1) In addition to the normal operating
system, emergency systems are usually provided
to ensure that the landing gear can be
lowered in case of main-system failure.
(2) Emergency systems consist of
backup hydraulic systems, or stored nitrogen
gas bottles that can be directed into actuating
cylinders, mechanical systems that can be operated
manually, or free-fall gravity systems.
GENERAL INSPECTION.
A thorough inspection of the landing gear involves the entire structure of the gear, including attachments, struts, wheels, brakes, actuating mechanisms for retractable gears, gear hydraulic system and valves, gear doors, and all associated parts. The manufacturer’s inspection procedures should be followed where applicable.
Retractable Landing Gear
Fixed Landing Gear
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