Cold Weather Procedures (Deicing / Anti-Icing)
1 General
Icing conditions can exist when the outside air temperature on the ground or Total Air
Temperature (TAT) during flight is +10 °C (50 °F) or colder, and visible moisture in any form is
present.
The aircraft must not take-off with frost, snow or ice on these critical areas:
− The wing leading edge
− The wing upper surface
− The flight control surfaces (including hinge gaps)
− The horizontal stabilizer
− The vertical stabilizer
− The engine intake
− The fuselage upper surface
− The windshields
− The air data probes (pitot static probes, Angle of Attack [AoA] sensors, Outside Air
Temperature [OAT] probe)
− The upper fuselage surface between the aircraft nose and the windshield
− The landing gear.
2 Deicing Methods
Deicing fluids can be used to quickly melt and remove frost or other ice formations.
Sprayed deicing or anti-icing fluids can quickly remove frost and prevent ice formation on the
aircraft.
In clear weather it may be possible to manually remove contamination.
2.1 Manual
Manual deicing can be used to remove dry snow and large amounts of wet snow. Brooms,
brushes, ropes, squeegees or other tools can be used to remove large snow deposits. You
must be careful not to damage the aircraft surface when you do this.
Section 2 - Aircraft Servicing
Ground Servicing Guide Report No: 02527
Issue date: Dec 19, 2022
Page 2-8-1
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