What must be included in the maintenance record for a rebuilt engine granted zero time?

The maintenance record for a rebuilt engine granted zero time must include a signed statement of the date of the rebuild. This statement serves as a formal documentation of when the engine was rebuilt and establishes its starting point for maintenance and operational life. It is crucial for tracking the engine's performance and adherence to maintenance schedules moving forward.

This requirement ensures that anyone inspecting or maintaining the engine in the future has clear documentation regarding when the rebuild occurred, allowing for proper maintenance planning and ensuring compliance with regulatory standards. Without this signed statement, it would be challenging to ascertain the engine's age and remaining service life, which is essential for safety and reliability in aviation operations.