Historical Details: Brief overview of the airframe: • Built at the Boeing 737 Production line at Renton Washington, United States of America • 09/12/82 First flown from Renton Municipal Airport • 1988 saw a change of registration to N270AU • 27/2/1997 US Air became US Ai. Description: The Boeing 737 is a short- to medium-range twinjet narrow-body airliner. Originally developed as a shorter, lower-cost twin-engined airliner derived from Boeing's 707 and 727, the 737 has developed into a family of ten passenger models with a capacity of. Level of Importance: Regionalb737