Which publication contains approved data for performing a major repair to an aircraft engine?

The correct answer, which is the Manufacturer's Maintenance Instructions, is vital because it provides specific and approved procedures, guidelines, and standards for performing major repairs on an aircraft engine. These instructions are developed by the manufacturer based on extensive testing and engineering analysis, ensuring that any maintenance conducted adheres to safety and performance requirements unique to that engine model.

Utilizing the Manufacturer's Maintenance Instructions is crucial for maintaining compliance with regulatory standards and avoiding safety risks. These instructions encompass detailed specifications, tools required, and step-by-step processes that align with the engine's design and operational constraints. They serve as a primary reference for maintenance personnel, ensuring consistency and reliability in the servicing of the engine.

While other publications, such as FAA Advisory Circulars, may provide general guidance and standards for maintenance practices, they do not contain the specific data necessary for major repairs of particular engine types. Similarly, the Aviation Safety Handbook and the Engine Operation Manual provide valuable information but do not replace the comprehensive and precise directives found in the Manufacturer's Maintenance Instructions.