AIRCRAFT PROTECTION - DESCRIPTION AND OPERATION

** ON A/C NOT FOR ALL

1. General
Safe operation of aircraft in cold weather conditions raises specific problems. Aircraft downtime and delays in flight schedules caused by cold weather problems can be minimized by a program of preventive cold weather servicing.
Procedures for cold weather servicing during cold weather must be developed by the operator. This servicing must meet their specific requirements based on :

their cold weather experience
the available equipment and materials
the climatic conditions existing at their bases

This topic contains information to assist the operator in defining developing, and implementing cold weather preventive maintenance procedures that will minimize aircraft downtime and improve the safe operating level of the aircraft in adverse climatic conditions .
These procedures are:

12-31-00,P. Block 201 COLD WEATHER MAINTENANCE PROCEDURES.
12-31-11,P. Block 201 ANTI-ICING PROTECTION.
12-31-12,P. Block 201 ICE AND SNOW REMOVAL.
12-31-21,P. Block 201 AIR CONDITIONING.
12-31-24,P. Block 201 ELECTRICAL POWER.
12-31-25,P. Block 201 EQUIPMENT/FURNISHINGS.
12-31-27,P. Block 201 FLIGHT CONTROLS.
12-31-28,P. Block 201 FUEL.
12-31-31,P. Block 201 INDICATING/RECORDING SYSTEMS AND NAVIGATION.
12-31-32,P. Block 201 LANDING GEAR.
12-31-35,P. Block 201 OXYGEN SYSTEM
12-31-38,P. Block 201 WATER/WASTE.
12-31-49,P. Block 201 AUXILIARY POWER UNIT.
12-31-51,P. Block 201 STRUCTURE.
12-31-52,P. Block 201 DOORS.
12-31-71,P. Block 201 POWER PLANT.

Cold Soak Definition
The aircraft is in cold soak configuration when :

it is parked in cold weather (Outside Air Temperature (OAT) lower than 0 deg.C (32.00 deg.F)) and
there is no supply of power to the aircraft (no air conditioning).

[Rev.10 from 2021] 2026.04.02 06:10:31 UTC