What is the classification of an aircraft engine that has been cleaned, inspected, and tested again after reassembly?

The classification of an aircraft engine that has been cleaned, inspected, and tested again after reassembly is termed "Overhauled." This term refers specifically to the process where an engine is disassembled, cleaned, inspected for serviceability, and then reassembled with the necessary components replaced or repaired to ensure that it meets manufacturer specifications. The key aspect of overhaul is that the engine is serviced to restore it to a condition that is as close as possible to its original performance and reliability standards.

In the context of the other terms, "Remanufactured" generally implies a more extensive process than overhaul, sometimes involving significant modifications or upgrades beyond simply restoring the engine to its original specification. "Rebuilt" could suggest a comprehensive restoration similar to an overhaul but can sometimes imply the use of non-original parts or components. "Restored," while relevant in the context of classic aircraft, typically refers to bringing an aircraft or its components back to a specific historical condition or aesthetic rather than strictly adhering to the operational specifications of the original manufacturer.

Thus, the focus on cleaning, inspecting, and testing after reassembly firmly places this scenario under the classification of an engine being overhauled.