"Mr. Crenshaw is a business jet test pilot and a former US Air Force test pilot, university professor, and airline pilot with over 11,000 hours of flight time. He is an Airline Transport Pilot (ATP) with both domestic and international flight experience and an FAA Certificated Flight Instructor in single engine, multi-engine, and glider aircraft. He is also an FAA Designated Engineering Representative (DER) as a Flight Test Pilot for Gulfstream Aerospace Corporation with type ratings in the Lear 35, Gulfstream II, Gulfstream III, Gulfstream IV-SP, and Gulfstream V/G450/550. He is currently the Chief Project Test Pilot for Gulfstream commercial and special missions test programs. Prior to his work with Gulfstream, Mr. Crenshaw was the Chief Test Pilot for Northrop Grumman. At the USAF Test Pilot School, he taught both in the classroom as Chief of Academics and in the cockpit where he was a flight instructor in the Northrop T-38 Talon, De Havilland Beaver, De Havilland Twin Otter, and gliders. After retirement from the Air Force, he flew for Northwest Airlines flying DC-9’s (-10, -30, and -50 models). Mr. Crenshaw is an Associate Fellow of the Society of Experimental Test Pilots, a member of the Aircraft Owners and Pilots Association (AOPA), and a member of the Experimental Aircraft Association (EAA)."