X-Plane 9.70+ Tornado GR4. The Panavia Tornado is a family of twin-engine, variable-sweep wing combat aircraft, which was jointly developed and manufactured by Italy, the United Kingdom, and West Germany. The GR4 was heavily used in Operation Telic, the British contribution to the 2003 invasion of Iraq. RAF Tornados flew in the opening phase of the war, flying alongside American strike aircraft to rapidly attack key installations. By David Austin.