Jacking; Leveling; Flyable Storage; Tie-Down - Cessna 150 COMMUTER 1976 Pilot Operating Handbook

SECTION 8
HANDLING, SERVICE
&
MAINTENANCE
CESSNA
MODEL 150M
lated moisture may freeze the brakes, or when the brakes are overheated.
Install the control wheel lock and chock the wheels. In severe weather
and high wind conditions, tie the airplane down as outlined in the follow-
ing paragraph.
TIE-DOWN
Proper tie-down procedure is the best precaution against damage to
the parked airplane by gusty or strong winds. To tie-down the airplane
securely, proceed as follows:
(1) Set the parking brake and install the control wheel lock.
(2) Install a surface control lock between each aileron and flap.
(3) Tie sufficiently strong ropes or chains (700 pounds tensile
strength) to the wing and tail tie-down fittings and secure each rope
to a ramp tie-down.
(4) Install a surface control lock over the fin and rudder.
(5) Tie a rope (no chains or cables) to an exposed portion of the
engine mount and secure to a ramp tie-down.
(6)
Install a pitot tube cover.
JACKING
When a requirement exists to jack the entire airplane off the ground,
or when wing jack points are used in the jacking operation, refer to the
Service Manual for specific procedures and equipment required.
Individual main gear may
be
jacked by using the jack pad which is
incorporated in the main landing gear strut step bracket. When using the
individual gear strut jack pad, flexibility of the gear strut will cause the
main wheel to slide inboard as the wheel is raised, tilting the jack. The
jack must then be lowered for a second jacking operation. Do not jack
both main wheels simultaneously using the individual main gear jack pads.
If nose gear maintenance is required, the nose wheel may be raised
off the ground by pressing down on a tailcone bulkhead, just forward of the
horizontal stabilizer, and allowing the tail to rest on the tail tie -down ring.
NOI'E
Do not apply pressure on the elevator or outboard stabi-
lizer surfaces. When pushing on the tailcone, always
apply pressure at a bulkhead to avoid buckling the skin.
To assist in raising and holding the nose wheel off the ground, weight
down the tail by placing sand-bags, or suitable weight, on each side of the
8- 8
CESSNA
MODEL 150M
SECTION 8
HANDLING, SERVICE
&
MAINTENANCE
horizontal stabilizer, next to the fuselage. If ground anchors are avail-
able, the tail should be securely tied down.
NOTE
Ensure that the nose will be held off the ground under
all conditions by means of suitable stands or supports
under weight supporting bulkheads near the nose of the
airplane.
LEVELING
Longitudinal leveling of the airplane is accomplished by placing a
level on leveling screws located at stations 94.63 and 132.94 on the left
side of the tailcone. Deflate the nose tire and/or lower or raise the nose
strut to properly center the bubble in the level. Corresponding points on
both upper door sills may be used to level the airplane laterally.
FLYABLE STORAGE
Airplanes placed in non-operational storage for a maximum of 30 days
or those which receive only intermittent operational use for the first 25
hours are considered in flyable storage status. Every seventh day during
these periods the propeller should be rotated by hand through five revolu-
tions. This
a~tion
"limbers" the oil and prevents any accumulation of cor-
rosion on engine cylinder walls.
LWARNINGa
For maximum safety, check that the ignition switch is
OFF,
the throttle is closed, the mixture control is in
the idle cut-off position, and the airplane is secured
before rotating the propeller by hand. Do not stand
within thp arc of the propeller blades while turning the
propeller.
After 30 days, the airplane should be flown for 30 minutes or a gr0.und
runup should be made just long enough to produce an oil temperature .wIth-
in the lower green arc range. Excessive ground runup should be aVOIded.
Engine runup also helps to eliminate exr.essive accumulations of water
in the fuel system and other air spaces in the engine. Keep fuel tanks full
to minimize condensation in the tanks. Keep the battery fully charged to
prevent the electrolyte from freezing in cold weather. If the airplane is
to be stored temporarily, or indefinitely, refel' to the Sp.rvice Manual for
proper storage procedures.
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