Which manual contains comprehensive procedures for operating in cold weather?

The FCOM 1 Supplement 1 is designed to provide flight crews with specific operational procedures during various conditions, including cold weather. This manual includes detailed guidance on how to manage situations that may arise due to low temperatures, such as aircraft performance considerations, de-icing procedures, and equipment functionality. It addresses the challenges and necessary adjustments pilots must consider to ensure safety and efficiency when operating in cold weather environments.

The other manuals, while they may contain relevant information about aircraft operations, do not specifically focus on comprehensive cold weather procedures. The Aircraft Operations Manual primarily contains instructions about general operational policies and standard operating procedures, not tailored to specific environmental conditions. The Aircraft Maintenance Manual deals with the technical and maintenance requirements of the aircraft rather than operational procedures for crews. Lastly, the Flight Crew Operating Procedures manual outlines standard protocols for flight crews without extensive detail on environmental factors like cold weather. Thus, the FCOM 1 Supplement 1 is the most appropriate resource for cold weather operations.