blade flapping and feathering. on 22 December 1935, this aircraft established a Federation Aeronautique Internationale speed record of , while the type also set an altitude record of during the following year. Bréguet was engaged in the rearmament efforts during the late 1930s, producing numerous military aircraft in the run-up to and during the Second World War. After resuming normal operations in the immediate postwar climate, the company largely focused on the development of commercial transports and other large aircraft designs. On 4 May 1955, the company's founder, Louis-Charles Bréguet, died in Paris, France. In response to a NATO specification for a long-range maritime patrol aircraft to replace the Lockheed P2V Neptune, Bréguet submitted its own design, the Br 1150, which was chosen as the winner in late 1958. Accordingly, a multinational consortium, Société d'Étude et de Construction de Bréguet Atlantic (SECBAT) was set up to develop and build this aircraft, which was named the 1150 Atlantic.Elvert, Schirmann and Lang 2008, p. 182. An initial order for 60 Atlantics 40 for France and 20 for Germany was placed in 1963; deliveries of the Atlantic commenced during 1965. The production line was reactivated following further orders from the Netherlands and Italy; this second production batch made its deliveries between 1972 and 1974. During 1978, the French Government authorised development of an updated version of the Atlantic, the Atlantic Nouvelle Génération or Atlantique 2, which involved little change to either airframe and engines while equipment and avionics were extensively revised."Maritime Muscle". Flight International, 27 June 1981. p. 2014. Deliveries started in 1989 with 28 eventually built, from an original requirement for 42.Penny, Stewart. "Military Aircraft Directory Part 1". Flight International, 4 August 1999. During the 1960s, Bréguet Aviation became involved in the multinational joint venture company SEPECAT (Société Européenne de Production de l'Avion d'École de Combat et d'Appui Tactique – the "European company for the production of a combat trainer and tactical support aircraft") together with the British Aircraft Corporation (BAC) to produce the Jaguar strike aircraft. Though based in part on the Breguet Br.121, using the same basic configuration and an innovative French-designed landing gear, the Jaguar was built incorporating major elements of design from BAC – notably the wing and high lift devices. Production of components was split between Breguet and BAC, while the aircraft themselves would be assembled on two production lines; one in the UK and one in