Which document contains mandatory replacement times for turbine engine parts?

The document that contains mandatory replacement times for turbine engine parts is the Engine Manufacturer's Service Instructions. These service instructions are issued by the engine manufacturer and provide essential details regarding maintenance, including specific guidelines on the intervals at which parts should be replaced to ensure safety and reliability. Such instructions are crucial for operators as they are based on rigorous testing and evaluation conducted during the engine design and certification process.

The maintenance manual may provide general maintenance guidelines but does not always include the specific mandatory replacement intervals stipulated by the engine manufacturer. The propeller manufacturer's guidelines focus on propeller components rather than turbine engine parts. While the FAA Regulations Handbook provides a regulatory framework for aviation safety, it does not specify mandatory replacement times for individual engine components; instead, it sets forth regulations that govern the aviation industry as a whole. Thus, engine manufacturer guidance is the authoritative source for mandatory replacements related to turbine engines.