What is the classification of replacing a damaged engine mount with a new identical one?

Replacing a damaged engine mount with a new identical one falls under the category of a minor repair. This is because the action involves the replacement of a component with an identical part and does not alter the aircraft’s structure or performance characteristics significantly. Minor repairs are typically defined as maintenance tasks that restore a component to its original condition without any modifications that would affect the design or operational specifications of the aircraft.

In contrast, a major modification would involve changes that could affect the aircraft's performance, characteristics, or structural design, which is not the case in this context. A safety inspection refers to a systematic review to ensure compliance with regulations and safety requirements, rather than a hands-on repair or replacement activity. An overhaul involves disassembling and restoring a component or system to a condition that meets its original specifications, which also does not apply in this scenario, as replacing an engine mount is a straightforward, limited repair task.