Textron Cessna Grand Caravan Ex 208B, Pilot'S Operating Handbook And Faa Approved Airplane Flight Manual

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CESSNA SECTION 8
MODEL 208B 867 SHP AIRPLANE HANDLING, SERVICE
GARMIN G1000 AND MAINTENANCE
U.S.
PROLONGED OUT OF SERVICE CARE
Prolonged out of service care applies to all airplanes that will not be
flown for an indefinite period (less than 60 days) but which are to be
kept ready to fly with the least possible preparation. If the airplane is to
be stored temporarily or indefinitely, refer to the 208 Maintenance
Manual, Chapter 10-11-00, Storage - Maintenance Practices, for proper
storage procedures. The Maintenance Manual provides amplification
for the following procedures:
1. The procedure to be followed for preservation of an engine in
service depends on the period of inactivity and whether or not
the engine may be rotated during the inactive period. The
expected period of inactivity must be established and reference
made to the Engine Preservation Schedule. The preservation
carried out must be recorded in the engine maintenance record
and on tags secured to the engine. The following preservation
schedule lists procedures to be followed:
CAUTION
Under no circumstances should preservative oil be
sprayed into the compressor or exhaust ports of the
engine. Dirt particles deposited on blades and vanes
during engine operation will adhere and alter the airfoil
shape, adversely affecting compressor efficiency.
a. 0 to 7 Days - The engine may be left in an inactive state,
with no preservation protection, provided the engine is
sheltered, humidity is not excessively high, and the engine
is not subjected to extreme temperature changes that would
produce condensation.
b. 8 to 28 Days - An engine inactive for up to 28 days requires
no preservation, provided all engine openings are sealed off
and relative humidity in the engine is maintained at less than
40%. Humidity control is maintained by placing desiccant
bags and a humidity indicator on wooden racks in engine
primary exhaust duct. Suitable windows must be provided in
the exhaust closure to facilitate observation of the humidity
indicators.
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208BPHCUS-00 8-57