T
RAINING
M
ANUAL
–
L
ANCAIR
IV/IVP
An airspeed switch mounted on the pitot tube line prevents gear retraction below
75 kts. For landing gear retract tests on jacks you must blow into the pitot tube to
get enough “airspeed” to disengage the airspeed safety switch. A balloon will
also do the trick. The main gear is retracted into the fuselage via full rack and
pinion gears, and the nose gear also retracts aft.
The mains and the nose gear are held up by hydraulic pressure. The mains
have mechanical down locks in the hydraulic actuating cylinder and a 110 psi gas
shock strut provides a positive down/lock for the nose gear. There is no “uplock “
on the mains. During condition inspection check operation of the mechanical
downlock.
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©
Copyright
2007
LOBO
May
not
be
copied
without
permission.