For what reason must a major repair to an aircraft engine be documented?

Documenting a major repair to an aircraft engine is essential to ensure compliance with FAA regulations. The FAA has stringent requirements concerning the maintenance and safety of aircraft components, and documentation serves as proof that any repairs meet these established standards. Proper records are necessary not only for legal and regulatory purposes but also to ensure that any repairs made adhere to the safety protocols and airworthiness directives set forth by aviation authorities. This supports safe flight operations and maintains the integrity of the aircraft throughout its operational lifetime.

While other options touch on valid aspects of aircraft maintenance, such as future operations or insurance implications, the primary driver for thorough documentation in this context is adhering to regulatory requirements that govern aviation safety and maintenance practices.