Aircraft was assigned to NASA Dryden from 1985-1992. Flew supersonically on February 13 1985 and was the first forward swept winged jet to do so.

Grumman G-712 forward swept wing demonstrator, better known as the X-29A. Rebuilt from F-5A 63-8372 to explore state-of-the-art composite technologies in aircraft design. First flew in 1984. Later registered as NASA 003. Preserved at the National Museum of the United States Air Force, Wright-Patterson, AFB OH from 1994.

During WWII, Germany and the United States experimented with forward-swept wings, but both encountered problems with the metal wings bending dangerously at higher speeds. As stronger composite materials became available, the X-29 was developed to explore forward sweep, advanced materials, a forward-mounted canard elevator and a computerised flight control system. After successfully completing the test program, the X-29A on display (one of two built) was retired to the museum in late 1994

Grumman G-712 forward swept wing demonstrator. Rebuilt from F-5A 63-8372 to explore state-of-the-art technologies in aircraft design. First flew in 1984. Later registered as NASA 003. Preserved at the National Museum of the United States Air Force, Wright-Patterson, AFB OH from 1994.

Rebuilt from Northrop F-5A 63-8372, using also F-16 parts. Fitted with a 33% forward swept wing and canard control surfaces for a joint test programme DARPA/USAF/NASA with a/c being flown by the 6512 Test Squadron AF FTC. First flown 14.12.84, retired in 1991, now preserved at USAFM Dayton. Type also known as the X-29A.