Musée de l'aéronautique Bétheny, Military aviation museum in Bétheny, France.

The Musée de l'aéronautique Bétheny occupied eight exhibition rooms arranged in a chronological circuit on the former Air Base 112, named after Commander Marin la Meslée. Its collections held aircraft parts, uniforms, insignia, models, paintings and poster reproductions, and aircraft and air-to-air missiles stood outside in static display. The base lay across Bétheny, Courcy and Brimont and covered 550 hectares at its closure.

The museum was inaugurated on 20 June 2002, the date of a ceremony honouring the Free French Air Forces and dissolving their association; it was a project launched in late 2001 by Colonel Henri Switzer, commander of Air Base 112 from 2000 to 2002. Its chronological circuit ran from Henri Farman's first town-to-town flight of 30 October 1908 and the 1909 Champagne aviation week to the base's founding in the mid-1920s, when it grew into France's leading air base with nearly 300 aircraft by 1939.

The museum tells the story of the region's connection to aviation through displayed documents and artifacts that show how aircraft were part of local life and work. Visitors can see evidence of pioneering achievements that shaped the area's identity.

The museum was housed on Air Base 112, north of Reims across the communes of Bétheny, Courcy and Brimont, and closed with the base. Its eight exhibition rooms followed one another in a chronological circuit, starting with the entrance hall on the base from 1993 onward. Aircraft and air-to-air missiles stood outside in static display.

The museum closed with Air Base 112 itself: the base shut in 2011, ending the display of aircraft and air-to-air missiles parked outdoors beside the exhibition halls. The collections covered Reims aviation firsts, from Henri Farman's 1908 town-to-town flight to the 1909 Champagne aviation week and the 1911 military aviation competition.