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

The owner of the aircraft is ultimately responsible for maintaining it in airworthy condition. This responsibility is a fundamental principle in aviation regulations, which stipulate that the owner must ensure that all necessary maintenance and inspections are performed. This may include adhering to the maintenance schedule, ensuring compliance with safety regulations, and keeping accurate records of maintenance activities.

While engineers, maintenance organizations, and pilots play essential roles in the maintenance and operation of the aircraft, their responsibilities are defined within the framework established by the owner. Engineers and maintenance personnel execute the necessary work to keep the aircraft in compliance with airworthiness standards, but it is the owner's obligation to oversee that this work is performed satisfactorily. Furthermore, pilots must operate the aircraft safely, but they are usually not responsible for the maintenance of the aircraft itself.

By placing the onus on the owner, aviation regulations ensure accountability and promote diligence in maintaining aircraft to the highest safety standards.