Who is primarily responsible for maintaining an aircraft in an airworthy condition?

The owner or operator of the aircraft is primarily responsible for maintaining the aircraft in an airworthy condition. This responsibility stems from regulatory requirements that establish the owner or operator as the individual or entity that ensures an aircraft complies with safety standards and regulations. They must ensure that all necessary maintenance is performed and that the aircraft is kept in a condition that meets operational safety requirements.

This involves adhering to maintenance schedules, ensuring inspections are conducted, and keeping records of all maintenance work performed. The owner or operator is ultimately accountable for the aircraft's airworthiness, which includes both mechanical and structural integrity, as well as compliance with aviation regulations.

While the role of the pilot, the chief pilot, and the mechanics is significant in the overall operation and management of maintenance tasks, it is the owner or operator who holds the final legal responsibility for ensuring that the aircraft is fit for flight and safe to operate.