Who is responsible for making the record entry after a 100 hour inspection?

The correct answer is that the certificated mechanic who performed the inspection is responsible for making the record entry after a 100-hour inspection. This requirement is outlined in the Federal Aviation Regulations (FARs), specifically in 14 CFR Part 43.

According to these regulations, any maintenance or preventive maintenance activity performed on an aircraft must be documented, indicating the type of work done and that it has been completed in accordance with the regulations. A certificated mechanic holds the necessary qualifications and authority to perform such inspections and takes responsibility for the airworthiness of the aircraft following an inspection.

By signing off on the entry, the mechanic confirms that they have performed the inspection according to the required standards and that any discrepancies are noted and addressed. This accountability is crucial for maintaining safety and compliance with aviation regulations.

Other parties, such as the aircraft owner, a licensed pilot, or an FAA inspector, do not have the authority to make this record entry after the inspection has been performed, as they are not the ones conducting the inspection themselves. The owner may be responsible for maintaining the logbooks, but the legal and regulatory obligation to document the inspection lies with the certificated mechanic.