Planned for FAA certification under 14 CFR part 23, the Javelin had a design resembling a fighter aircraft, an unusual concept for civilian jets. The Javelin MK-20 derivative, developed in cooperation between ATG and Israel Aerospace Industries, was expected to fill the jet trainer role for various air forces. The first prototype took flight on 30 September 2005. ATG halted all further development on the Javelin in December 2007 after failing to get $200 million to finance further development. The company subsequently declared bankruptcy in 2008, ending the development of the Javelin. Javelin design rights were bought by Rud Aero, a very small airplane manufacturer. They have partnered with another very small firm, Stavatti Aerospace to offer a variant of the Javelin for the U.S. Air Force's T-X program.
