Manufacturer Service Information Compliance: The purpose of this Continuing Airworthiness Notice (CAN) is to provide guidance about manufacturers’ service information, such as Service Bulletins (SB), Service Letters (SL) etc.
Aircraft and aeronautical product manufacturers issue service information for a variety of reasons, including product improvement, changes to maintenance recommendations, and in response to maintenance and manufacturing defect issues.
Each manufacturer will have their own titles and formats for service information. They will also place differing importance on their service information; some manufacturers consider service information to be integral to their Instructions for Continuing Airworthiness (ICA), and others may not.
It is important that operators understand the manufacturer’s use of service information, and its place within the ICA. Manufacturers will usually explain the service information’s relevance within their ICA in the aircraft or product maintenance manuals, the product type certificate data sheets, modification data, or in the service information itself.
