Which statement best describes who may perform 100-hour inspections on powerplants, propellers, or any components thereof?

Which statement best describes who may perform 100-hour inspections on powerplants, propellers, or any components thereof?

• A. Certificated mechanics with a powerplant rating
• B. Uncertificated technicians
• C. Airframe mechanics only
• D. Engine manufacturers' technicians

Answer: (A)

Performing a 100-hour inspection on the powerplant or its components is limited to certificated mechanics who hold the appropriate rating. The powerplant rating is what authorizes a mechanic to inspect, service, and sign off on engines, propellers, and related engine systems. This rating shows the technician has received the specific training and is authorized to work within that area under FAA rules. An uncertificated technician lacks legal authority to perform or certify these inspections. An airframe-only mechanic wouldn’t be allowed to certify engine inspections unless they also hold a powerplant rating. Engine manufacturers’ technicians aren’t automatically empowered to sign off airworthiness inspections unless they are themselves certificated mechanics with the proper rating and working under the proper certificate.

Performing a 100-hour inspection on the powerplant or its components is limited to certificated mechanics who hold the appropriate rating. The powerplant rating is what authorizes a mechanic to inspect, service, and sign off on engines, propellers, and related engine systems. This rating shows the technician has received the specific training and is authorized to work within that area under FAA rules. An uncertificated technician lacks legal authority to perform or certify these inspections. An airframe-only mechanic wouldn’t be allowed to certify engine inspections unless they also hold a powerplant rating. Engine manufacturers’ technicians aren’t automatically empowered to sign off airworthiness inspections unless they are themselves certificated mechanics with the proper rating and working under the proper certificate.