AIRPLANE
OPERATIONS
MANUAL
GROUND SERVICING
REVISION 37
1-12-20
Page
1
Code
01
AOM-145/1114
COLD WEATHER OPERATION
COLD SOAK PREPARATION
The procedures below should be applied in the event of extended
airplane exposure at low temperatures. In the event that the airplane is
off the maintenance base, the crew should ensure that all actions have
been accomplished.
− Put the wheel chocks against the landing gear wheels.
− For an icy ramp, leave Emergency/Parking Brakes applied.
Otherwise, Emergency/Parking Brakes must not be applied to
avoid freezing of the brakes.
− Install protective covers on engines and APU inlets/outlets, pitot,
TAT probes, and wheels.
− Drain water and waste from all water tanks, if cold soak temperature
is expected to be below 0°C (32°F).
− Remove the batteries if temperatures are expected to be below
-15°C (5°F). This protects the batteries and ensures their duration
in case of electrical emergency.
− All doors and windows must be closed to avoid snow and humidity
from entering into the airplane.
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