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, flown by retired Air Force 2nd Lt and test pilot Robert Fuschino.

Javelin design rights were bought by Rud Aero, a very small airplane manufacturer.

They had 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.