[1] The Metal Aircraft Corporation purchased the design from the Halpin Development Co. and unveiled it at the 1929 National Air Races with Elinor Smith.

[2][3] Following an accident at Bowman Field in May 1928, the prototype Flamingo was redesigned with a different nose, windscreen, and tail.

[6] At one point, the aircraft carried an African-American porter in a red suit named Benny Smith.

The Metal Aircraft Corporation Flamingo that crashed above the falls was recovered by helicopter in the 1960s by the Venezuelan government and is on display at the entrance of the Ciudad Bolívar airport, in Venezuela.

[2] Another operator of the aircraft was United States Airways which flew a route from Denver to Kansas City in the early 1930s.