A certificated mechanic may perform:

A certificated mechanic is specifically authorized to perform various types of inspections and repairs on aircraft, including 100-hour inspections. These inspections are mandated for aircraft that are carrying passengers for hire and must be completed after every 100 hours of flight time. A certificated mechanic is trained and certified to assess the condition of instruments and systems during this inspection, ensuring they meet regulatory standards for safety and functionality.

In contrast, annual inspections require a mechanic with an Inspection Authorization (IA), which is not the case with the other options provided. While pre-purchase evaluations and repairs on instrument panels may be conducted by experienced mechanics, they are not explicitly defined as tasks that a mechanic is authorized to perform under the same regulatory standards that govern inspections. The authority and scope for performing a 100-hour inspection, however, falls directly under the responsibilities assigned to certificated mechanics, legitimizing their involvement in this crucial aspect of aircraft maintenance.