Keywords: Dassault Mystere IV N in flight c1956.jpg The French Dassault Mystère IVN in flight The aircraft was equipped with the AN/APG-33 radar in an arrangement similar to North American F-86D Sabre Dog powered by a Rolls-Royce Avon turbojet and armed with 55× 68 mm Matra rockets in a retractable belly tray The first prototype flew on 19 July 1954 The Armée d'l Air eventually decided to purchase Sud Aviation Vautour and F-86K for the interceptor role but the Mystère IVN prototype continued to fly for several years as a testbed for radar equipment U S Navy Naval Aviation News September 1956 http //www history navy mil/nan/backissues/1950s/1956/Sep56 pdf p 23 ca 1956 USN PD-USGov-Military-Navy Dassault Mystère IV N |