Cessna 402C - Page 266

SECTION 8
HANDLING, SERVICE & MAINTENANCE
FLYABLE STORAGE
Flyable storage applies to all airplanes which will not be flown for an
indefinite period but which are to be kept ready to fly with the least
possible preparation. If the airplane is to be stored temporarily, or
i
ndefi nite 1 y, refer to the Ai rp1ane Ma intenance Manual for proper storage ___
procedures.
Airplanes which are not in daily fl ight should have the propellers
rotated, by hand, six revolutions at least once each week. In damp cl i-
mates and in storage areas where the daily temperature variation can cause
conden
sat ion, prope 11 er rota t i on shoul d be accomp 1i shed more frequentl y.
Rotating the propeller 45'" to 90'" from its original position redi stributes
residual oil on the cyl inder wall s, crankshaft and gear surfaces and repo-
sitions the pistons in the cylinders, thus minimizing corrosion. Rotate ~
propellers as follows;
1. Throttles - IDLE.
2. Mixtures - IDLE CUT-OFF.
3. Magneto Switches - OFF.
4. Propellers - ROTATE CLOCKWISE. Manually rotate propellers six
revolutions, standing clear of arc of propeller blades. Stop pro-
pellers 45'" to 90'" from its original position.
Keep fuel tanks full to minimize condensation in the fuel tanks.
Maintain battery at full charge to prevent electrolyte from freezing in
cold weather.
If the optional 1000 series avionics' and/or optional fuel
flow
indicating system are installed, the battery will di scharge continu-
ously, regardless of battery switch position. This flow of current is
requi red to maintain the memories of the referenced equipment. If the ~
airplane is not in frequent use, battery di scharge can be avoided by di s-
connecting the battery or pulling the circuit breakers on all items wired
to the hot battery bus. These items include the frequency memory, fuel
I
flOW memory circuit, baggage lights, and electric clock (if parked for more
fi ve days) .
.---------NOTE-------- ...
• A malfunctioning nose baggage or wing locker light
will completely deplete the battery in approximately
four days, depending on the degree of charge and
condition of the battery .
•
Airplanes inactive for long, periods of time should
service the battery in accordance with BATTERY
servicing, this section.
If the optional nose compartment mounted battery is installed, the
circuit breaker is located adjacent to the battery. If the airplane is
stored outside, tie-down airplane in anticipation of high winds. Secure
airplane as follows:
1. Secure rudder with the optional rudder gust lock or with a control ~
surface lock over the fin and rudder. If a lock is not available,
caster the nosewheel to the full left or right position.
2. Install pitot tube cover( s) if available.
3. Set elevator, aileron and rudder trim tabs to neutral so the trim
tabs fair with the control surfaces.
4. Install control column lock in pilot's control column, if avail-
able. If column lock is not available, tie the pilot's control
wheel full aft with a seat belt.
R-R
1 November 1979
Revision 4 - 1 December 1983