In May 1948, the second prototype, "M.D.450-02", made its maiden flight. This second prototype featured a pressurized cockpit and more complete internal equipment. In November 1948, the second prototype was dispatched to Centre d'Essais en Vol de Marignane to participate in manoeuvrability trials, during which it was recorded as having climbed to an altitude of 15,000 m (49,213 ft). In December 1948, the 450 liter (118.9 US gal) wingtip tanks that would become an indelible feature of all Ouragans first appeared. Testing of the second prototype was discontinued following the sustaining of damage during one landing due an undercarriage malfunction.