What type of repair is the replacement of a damaged engine mount with a new identical engine mount?

The process of replacing a damaged engine mount with a new identical engine mount is classified as a minor repair because it restores the engine mount to its original condition without altering its design, strength, or operating capabilities. Minor repairs are generally defined as those that do not significantly affect the aircraft's performance or structural integrity. This classification allows for certain maintenance tasks to be carried out with less regulatory oversight, making it easier for maintenance personnel to perform necessary repairs that maintain the aircraft's safety and operational status.

In contrast, major repairs would involve significant changes to the design, strength, or operational capabilities of a component, necessitating more rigorous documentation and oversight. Preventive maintenance refers to routine actions intended to prevent future issues rather than directly repairing something broken, while a significant alteration would entail modifications that change the aircraft's characteristics or use, which does not apply in this scenario where the repair is simply a direct replacement of an identical part.