Cessna 150M - Hoisting; Leveling; Parking; Tie-Down

2-3. HOISTING. The aircraft may be lifted with a
hoist of two-ton capacity by using hOisting rings,
which are optional equipment, or by means of suit-
able slings. The front sling should be hooked to
each upper engine mount at the firewall, and the aft
sling should be positioned around the fuselage at the
first bulkhead forward of the leading edge of the
stabilizer. If the optional hoisting rings are used,
a minimum cable length of 60 inches for each cable
is required to prevent bending of the eyebolt-type
hoisting rings. If deSired, a spreader jig may be
fabricated to apply vertical force to the eyebolts.
2-4. JACKING. Refer to figure 2-2 for jacking
procedures.
2-5. LEVELING. Corresponding pOints on both
upper door sills may be used to level the aircraft
laterally. Prior to the 1971 models, the reference
point for leveling the aircraft longitudinally is the top
of the tail cone between the rear window and vertical
fin. Beginning with the 1971 models, the reference
points for longitudinal leveling of the aircraft are the
two
screws on the left side of the tailcone at zero
waterline.
2-6. PARKING. Parking precautions depend prin-
cipally on local conditions. As a general precaution,
set parking brake or chock the wheels and install the
controls lock. In severe weather and high wind con-
ditions, tie down the aircraft as outlined in paragraph
2-7 if a hangar is not available.
2-7. TIE-DOWN. When mooring the aircraft in the
open, head into the wind if possible. Secure control
surfaces with the internal control lock and set brakes.
ICAUTION!
Do not set parking brakes during cold weather
when accumulated moisture may freeze the
brakes or when the brakes are overheated.
After completing the preceding, proceed to moor the
aircraft as follows:
a. Tie ropes, cables, or chains to the wing tie-
down fittings located at the upper end of each wing
strut. Secure the opposite ends of ropes, cables,
or chains to ground anchors.
b. Secure a tie-down rope (no chains or cables) to
the exposed portion of the engine mount and secure
opposite end of rope to a ground anchor.
c. Secure the middle of a rope to the tail tie-down
ring. Pull each end of rope away at a 45 degree angle
and secure to ground anchors at each side of tail.
d. Secure control lock on pilot control column. If
control lock is not available, tie pilot control wheel
back with front seat belt.
e. These aircraft are equipped with a spring-loaded
steering system which affords protection against nor-
mal wind gusts. However, if extremely high wind
gusts are antiCipated, additional external locks may
be installed.
2-8. FLYABLE STORAGE. Flyable storage is de-
fined as a maximum of 30 days non-operational stor-
age and/or the first 25 hours of intermittent engine
operation.
NOTE
The aircraft is delivered from Cessna with a
Corrosion Preventive Aircraft Engine Oil
(MIL-C-6529, Type II, RUST BAN). This
engine oil is a blend of aviation grade
straight mineral oil and a corrosion pre-
ventive compound. This engine oil should
be used for the first 50 hours of engine opera-
tion. In the event it is necessary to add oil
during the first 25 hours of operation, use
only aviation grade straight mineral oil of
the correct viscosity.
•
During the 30 day non-operational storage or the first
25 hours of intermittent engine operation, every sev-
enth day the propeller shall be rotated through five
revolutions, without running the engine. If the air-
craft is stored outside, tie-down in accordance with
paragraph 2-7. In addition, the pitot tube, static air-.
vents, air vents, openings in the engine cowling, and
other similar openings shall have protective covers
installed to prevent entry of foreign material. After
30 days, aircraft Should be flown for 30 minutes or
ground run-up until oil has reached operating temper-
ature.
2-9. RETURNING AIRCRAFT TO SERVICE. After
flyable
storage, returning the aircraft to service is
accomplished by performing a thorough pre-flight in-
spection. At the end of the first 25 hours of engine
operation, drain engine oil, clean oil screens and
change external oil filter element. Service engine
with correct grade and quantity of engine oil. Refer
to figure 2-4 and paragraph 2-21 for correct grade of
engine
oil.
2-10. TEMPORARY STORAGE. Temporary storage
is defined as aircraft in a non-operational status for
a
maximum of 90 days. The aircraft is constructed
of corrosion resistant alclad aluminum, which will
last indefinitely under normal conditions if kept clean,
however,
these alloys are subject to oxidation. The
first indication of corrosion on unpainted surfaces is
in the form of white deposits or spots. On painted
surfaces, the paint is discolored or blistered. Stor-
age in a dry hangar is essential to good preservation
and should be procured if possible. Varying condi-
tions will alter the measures of preservation, but
under normal conditions in a dry hangar, and for
storage periods not to exceed 90 days, the following
methods of treatment are suggested:
a. Fill fuel tanks with correct grade of gasoline.
b. Clean and wax aircraft thoroughly.
c. Clean any oil or grease from tires and coat
tires with a tire preservative. Cover tires to pro-
tect against grease and oil.
d. Either block up fuselage to relieve pressure on
tires or rotate wheels every 30 days to change sup-
porting points and prevent flat spotting the tires.
e. Lubricate all airframe items and seal or cover
all openings which could allow moisture and/or dust
to enter.
Change 1 2-3