William Mark Duff - Airline Transport Pilot, Flight Engineer, Ground Instructor

William Duff is an FAA-certified pilot, flight engineer, and ground instructor based in Minneapolis, MN. William Mark Duff holds a Airline Transport Pilot certificate with Airplane Single-Engine Land (ASEL) and Airplane Multi-Engine Land (AMEL) ratings. This certificate includes type ratings for the Airbus A320 (A-320), Airbus A330 (A-330), and Airbus A350 (A-350), authorizing the holder to serve as pilot in command of these aircraft types. The Airline Transport Pilot certificate is the highest level of pilot certification issued by the FAA, authorizing the holder to act as pilot in command of scheduled airline operations and any aircraft for which they hold a type rating. ATP certification requires a minimum of 1,500 hours of total flight time and passing rigorous written and practical examinations. William holds a Flight Engineer certificate with Turbojet rating. This certificate authorizes the holder to serve as a flight engineer on aircraft that require a flight engineer as part of the flight crew. William holds a Ground Instructor certificate. This certificate authorizes the holder to provide ground training for pilot certification and endorsements. Their most recent FAA medical certificate is a First Class medical, valid through October 2026. The FAA airman records for William Duff are tracked and verified by AviatorDB.