sentences:  Under this arrangement, DASA manufactured the Tornado's central fuselage on behalf of all international customers while the other partners manufactured the rest of the airframe.DASA's subsidiary MTU also held a 40 per cent stake in the Tornado's engine manufacturer Turbo-Union, a separate multinational company formed to develop and build the RB199 engines for the aircraft.Production of the Tornado was terminated during 1998; the final batch of aircraft being produced was delivered to the Royal Saudi Air Force, who had ordered a total of 96 IDS Tornados.