Which inspections can certificated mechanics with a powerplant rating perform?

Certificated mechanics with a powerplant rating are authorized to perform 100-hour inspections and approve the return to service for aircraft. This capability primarily stems from the regulations outlined by the FAA, which delineate the specific tasks a mechanic can perform based on their ratings and certifications.

In the case of the 100-hour inspection, these mechanics must adhere to the maintenance and procedural standards laid out in 14 CFR Part 43. This type of inspection applies to specific operations, particularly those involving for-hire flight operations where timing is crucial and regulatory compliance is mandatory. The "approve for return to service" authority allows these mechanics to ensure that any repairs or maintenance work meets safety and performance standards, thus facilitating the safe operation of the aircraft.

While other options may describe activities that a mechanic may perform, they do not reflect the full scope of authority granted to a mechanic with a powerplant rating. For instance, annual inspections require additional certification and are not solely within the purview of a powerplant-rated mechanic. Similarly, major repairs and alterations fall under more stringent regulations, often requiring certification beyond just the powerplant rating. Visual inspections of external components may also be part of a mechanic's duties but do not capture the regulatory responsibilities tied to inspections and the