What privilege does a certificated mechanic with a powerplant rating have?

A certificated mechanic with a powerplant rating is specifically authorized to perform maintenance, preventive maintenance, and alterations related to aircraft powerplants and propellers. This includes the performance of the 100-hour inspection, which is a regulatory requirement for aircraft that exceed 100 hours of flight time since the last inspection. Following the inspection, the mechanic has the authority to return the powerplant and propeller to service, indicating that they meet the necessary safety and operational standards.

This designation ensures that the mechanic is adequately trained to handle the nuances and complexities of engine systems and propeller maintenance. The specific focus on powerplants in the rating reinforces the mechanic’s expertise, allowing them to ensure that these critical components are functioning safely and effectively.

In contrast, other options do not accurately reflect the responsibilities associated with a powerplant rating. For example, performing inspections on the entire aircraft or repairing avionics systems generally require additional ratings or qualifications beyond a powerplant rating, and signing off on only minor repairs does not encompass the broader responsibilities that come with this specialized certification.