With over 50 firm orders, it completed its first flight on 5 May in 1h 36min from Bordeaux-Merignac, starting a 1,200h flight test programme over 15 month: it climbed to 10,000 ft (3,000 m) for hydraulic, fuel, air data and landing gear extraction/retraction systems tests, then climbed to 25,000 ft for acceleration/deceleration tests and basic autopilot and autothrottle operations. The second Falcon 7X should join in June, and the third with a full interior in September for long-range, endurance tests and interior sound level validation: Dassault aims for a 52dB sound level in the cabin, 4dB lower than other Falcons. Certification slipped to late 2006 and first deliveries to early 2007.