Which record demonstrates compliance with Airworthiness Directives (AD)?

• A. Airworthiness Certificate
• B. Logbook Record of Airworthiness Inspections and Airworthiness Directives (AD) Compliance
• C. Registration Certificate
• D. Flight Crew License

Answer: (B)

Airworthiness Directives require required actions to be completed to address a known unsafe condition, and the way to prove those actions have been done is through the aircraft’s maintenance records. The best choice is the logbook record that documents AD compliance, including the AD number, date of compliance, description of the work, and the responsible technician’s signature. This record shows that the mandated inspections or modifications were actually performed and kept up to date, which is what authorities and operators rely on during inspections or audits. The other records serve different purposes: the airworthiness certificate shows the aircraft met initial airworthiness requirements at certification, the registration certificate proves ownership, and the flight crew license proves pilot qualifications.