CESSNA
SECTION 9 - SUPPLEMENTS
MODEL 172S NAV III
SUPPLEMENT 8
U.S.
FAA APPROVED
COLD SOAK
If extended exposure to cold weather is expected, refer to Maintenance
Manual procedures to prepare the airplane for cold soak. If the airplane
has cold soaked for more than two hours at temperatures colder than
Minus 10°C, refer to Maintenance Manual procedures to prepare the
airplane for flight. Cold temperatures will affect control cable tension.
See Chapter 27 of the Maintenance Manual for flight control cable
tensions. See Chapter 12 of the Maintenance Manual for information
on lubrication and greasing of moving parts. See Section 8 of the POH/
AFM for correct engine oil viscosity. See paragraphs on Cold Weather
Operation in Section 4 of the POH/AFM for additional information on
procedures for operating the airplane in cold temperatures.
When the outside temperature is less than Minus 34ºC, the airplane
batteries should be removed and stored in the warm conditions.
The engine must be preheated before starting if engine temperature is
less than Minus 6°C.
When the outside temperature is less than 0°C, moisture from
combustion can freeze on the engine spark plugs if the engine does not
continue to operate after it is started. This will prevent the engine from
starting again. Preheat the engine to more than 0°C before starting the
engine again.
Preheat the engine by directing warm air into the engine cooling inlets
behind the propeller. The temperature of the preheating air should not
be more than 120°C to prevent damage to the exterior paint. Open
flames are prohibited near the airplane.
Before takeoff, preheat the airplane cabin to more than Minus 30°C for
correct operation of the standby altimeter. If there is no warning that an
instrument is operating incorrectly, all other instruments will operate
down to the minimum temperature of the airplane.
Before operating the airplane, it is recommended to heat the cabin to a
comfortable temperature for the cabin occupants.
Approved for RF and CIS Countries Only
S8-19
172SPHAUS-S8-00
For
Training
Purposes
Only
Summary of Contents for Cessna 172S NAV III Skyhawk SP
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