What is the primary purpose of an engine overhaul?

The primary purpose of an engine overhaul is to conduct a comprehensive inspection and refurbishment. This process involves disassembling the engine to assess its condition, checking for wear and damage, and repairing or replacing components as necessary to restore the engine to its optimal operating condition. Overhauling is essential for ensuring safety, reliability, and performance over the engine's lifespan.

While increasing power output, enhancing fuel efficiency, or replacing all engine components may be goals or outcomes associated with engine maintenance, they do not encapsulate the core objective of an overhaul. The comprehensive inspection and refurbishment focus on bringing the engine back to standards set by the manufacturer, which is crucial for operational integrity and safety in aviation.