The 727 was Boeing's only tri-jet aircraft and, at the time of its production, Boeing's best-selling jet with over 1,800 sold. Have you ever flown on a Boeing 727? #TheMainLine
This tweet was posted on January 10, 2018.
The Link Flight Trainer played an important role in the development of commercial aviation. Instrument flying was taught on the Link Flight Trainer with the canopy closed. #TheMainLine
This tweet was posted on February 23, 2018.
The strength, lightness, and flexibility of wicker, a woven plant fiber, made it a natural choice for early aviation. #TheMainLine
This tweet was posted on July 28, 2017.
This is your last week to see "Flying the Main Line: A History of United Airlines." Located post-security, in Terminal 3 the exhibition showcases highlights from SFO Museum's collection. https://t.co/l3SGXBPfhd #TheMainLine
This tweet was posted on February 27, 2018.
United Air Lines introduced hot meal service on Douglas DST (Douglas Sleeper Transport) and DC-3 flights in the late 1930s. #TheMainLine
This tweet was posted on January 26, 2018.
United Air Lines purchased two Link Flight Trainers in 1934 for their pilots at the Boeing School of Aeronautics in Oakland, California. #TheMainLine
This tweet was posted on February 23, 2018.