Who holds the ultimate responsibility for Airworthiness Directive (AD) compliance?

The ultimate responsibility for Airworthiness Directive (AD) compliance falls on the registered owner or operator of the aircraft. This is because the owner or operator must ensure that the aircraft meets all regulatory requirements and is safe for operation in accordance with the directives issued by the Federal Aviation Administration (FAA).

While the FAA issues and oversees ADs to address safety issues and ensure compliance across the aviation industry, it is the responsibility of the owner or operator to implement any necessary maintenance, repairs, or alterations as specified in the AD. This can include conducting regular inspections and ensuring that all instructions are followed to maintain the airworthiness of their aircraft.

Though manufacturers and maintenance providers play important roles in providing the necessary guidelines and performing the work, it is the owner/operator who is ultimately accountable for ensuring that all aspects of compliance with ADs are addressed and that the aircraft remains in a condition for safe operation.