William Donald Grant Iii - Airline Transport Pilot, Flight Instructor, Mechanic

William Grant III is an FAA-certified pilot, flight instructor, and aircraft mechanic based in Lone Tree, CO. William Donald Grant III holds a Airline Transport Pilot certificate with Airplane Multi-Engine Land (AMEL), Airplane Single-Engine Land (ASEL), and Airplane Single-Engine Sea (ASES) ratings. This certificate includes type ratings for the Boeing 737 (B-737), Embraer E170/E175 (ERJ-170), and Embraer E190/E195 (ERJ-190), 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 Certified Flight Instructor (CFI) certificate with Airplane Single-Engine and Instrument Airplane ratings. A Certified Flight Instructor certificate authorizes the holder to provide flight training to student and certificated pilots, including ground and flight instruction, solo endorsements, practical test endorsements, and biennial flight reviews. William holds an Airframe and Powerplant (A&P) mechanic certificate. An A&P certificate is the most comprehensive FAA mechanic certification, authorizing the holder to inspect, maintain, and repair both aircraft structures (fuselage, wings, control surfaces, landing gear) and engines (reciprocating, turbine, and turboprop powerplants). A&P mechanics are qualified to perform the broadest range of aircraft maintenance, including annual inspections when combined with an Inspection Authorization (IA). Their most recent FAA medical certificate is a First Class medical, valid through September 2026. The FAA airman records for William Grant III are tracked and verified by AviatorDB.