Selecting the Icing/Freezing Rain Method. After examining requirements documents and applying the tailoring process in Part One of this standard to determine where icing/freezing rain is anticipated in the life cycle of materiel, use the following to confirm the need for this method and to place it in sequence with other methods. This method is designed to determine if materiel can operate after ice accumulation from rain, drizzle, fog, splash or other sources. When ice removal is required before operation, use integral deicing equipment or expedients normally available to the user in the field. Evaluate deicing equipment and expedients to assess their effectiveness and the potential for damage that may degrade performance