The Boeing 727 is a medium-sized commercial trimotor aircraft. The first Boeing 727 left the factory on November 27, 1962 and its first flight was in 1963 proving that it was better, even than the group of engineers in command of the young Jack Steiner. It has the same width as the Boeing 707/720 fuselage, which reduced Boeing's tooling costs and airline maintenance costs. It is the best-selling model until the early 1990s, with a total of 1,831 aircraft delivered, at which point it was replaced by the Boeing 737. By the end of July 2014, a total of 4 Boeing 727-100 and 83 Boeing 727- 200 remained in active service and one of them is in Colombia, was delivered to Avianca in 1966 and has as registration HK-727 and its serial (cn 19127/243). This airline then sold it to Aerosucre, who turned it into a cargo plane and used it until the end of March 2015, when it was donated to the Fenix Air Museum, which is located at Alfonso Bonilla Aragón Airport and serves the city of Cali. It is a historical fact, since it flew by 49 continuous years and always served to Colombian airlines since Avianca bought it again.