The French Dassault <i>Mystère</i> IVN in flight. The aircraft was equipped with the AN/APG-33 radar in an arrangement similar to North American F-86D <i>Sabre Dog</i>, 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 <i>Mystère</i> IVN prototype continued to fly for several years as a testbed for radar equipment.
USN
circa 1956 <div style="display: none;">date QS:P,+1956-00-00T00:00:00Z/9,P1480,Q5727902</div>
U.S. Navy Naval Aviation News September 1956 <a rel="nofollow" class="external autonumber" href="http://www.history.navy.mil/nan/backissues/1950s/1956/Sep56.pdf">[1]</a>, p. 23.