Cold Weather Operation - Textron Cessna Grand Caravan Ex 208B Pilot's Operating Handbook And Faa Approved Airplane Flight Manual

SECTION 4 CESSNA
NORMAL PROCEDURES MODEL 208B 867 SHP
GARMIN G1000

COLD WEATHER OPERATION

Special consideration should be given to the operation of the airplane's
fuel system during the winter season or prior to any flight in cold
temperatures. Proper preflight draining of the fuel system is especially
important and will eliminate any free water accumulation. The use of an
anti-ice additive is required for anti-ice protection. Refer to Section 8 for
information on the proper use of fuel additives.
Cold weather often causes conditions which require special care prior
to flight. Operating the elevator and aileron trim tabs through their full
travel in both directions will assure smooth operation by reducing any
stiffness in these systems caused by the cold weather effects on
system lubrication. Even small accumulations of frost, ice, snow or
slush must be removed, particularly from wing, tail and all control
surfaces to assure satisfactory flight performance and handling. Also,
control surfaces must be free of any internal accumulations of ice or
snow.
The use of an external pre-heater reduces wear and abuse to the
engine and the electrical system. Pre-heat will lower the viscosity of the
oil trapped in the oil cooler, prior to starting in extremely cold
temperatures.
Use of an External Power Unit is recommended when ambient
temperatures are below -18°C (0°F). Make sure that oil temperature is
in the green band (32°C to 99°C) prior to takeoff to ensure sufficient
temperature for the oil to fuel heat exchanger to function properly.
If snow or slush covers the takeoff surface, allowance must be made for
takeoff distances which will be increasingly extended as the snow or
slush depth increases. The depth and consistency of this cover can, in
fact, prevent takeoff in many instances.
FAA APPROVED
4-68 U.S. 208BPHCUS-01