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

The owner or operator of the aircraft holds the primary responsibility for maintaining the aircraft in an airworthy condition. This responsibility includes ensuring that the aircraft meets all regulatory requirements, is properly maintained, and conducted in accordance with the manufacturer’s specifications and guidelines. The owner/operator must ensure that maintenance records are kept up-to-date and that any necessary repairs and inspections are performed on schedule to keep the aircraft safe for flight.

While the pilot in command is responsible for the aircraft's safety during flight and must ensure that it is in an airworthy condition before takeoff, the broader accountability for maintaining the aircraft ultimately lies with the owner or operator. The maintenance provider plays a crucial role in conducting repairs and performing routine maintenance but acts under the direction of the owner/operator. Airline management may set policies and procedures regarding maintenance practices, but they do not directly assume responsibility for airworthiness.