Final answer:
Aircraft owners or operators are responsible for ensuring compliance with Airworthiness Directives (ADs). They must also ensure that the compliance with an AD is recorded in the aircraft's maintenance record.
Step-by-step explanation:
The individual responsible for ensuring that Airworthiness Directives (ADs) are complied with is typically the aircraft owner or operator.
It is the owner's or operator's responsibility to ensure that any mandatory maintenance actions, such as ADs issued by the Federal Aviation Administration (FAA) or the relevant aviation authority, are carried out on the aircraft. Furthermore, after compliance with an AD, it must be properly recorded.
The aircraft maintenance record must include an entry stating that the AD has been complied with, along with details of the compliance, including the date and the method of compliance. This record serves as evidence of the aircraft's continued airworthiness.