production, sales, and support to be shared. On 26 September 2000, the first order for the type was placed by Bristow Helicopters. The first preproduction helicopter flew on 3 February 2001 at Vergiate in Italy, with two further AW139s also participating in flying trials. The first production AW139 made its first flight on 24 June 2002. European JAA certification was received in June 2003, and its FAA type certificate followed in December 2004. By May 2005, the AW139 had received in excess of 100 orders worldwide. In the US, the type was marketed under the designation US139, and was entered into the US Army's Light Utility Helicopter competition.<ref>"Mission-Configured US139 Demonstrates Ability To Meet And Exceed Requirements." AgustaWestland, 21 December 2005.</ref> One key market for the AW139 was the oil and gas industry, which required helicopters of increased endurance for offshore operations. In 2005, AgustaWestland bought out Bell's 25% share in the program and all of its rights to the AW139 for $95 million.Bell Helicopter Sells Interest In AB139 Joint Venture". Aero News, 22 November 2005. In April 2008, AgustaWestland revealed that it was in the process of certifying an increase in the AW139's max gross weight to 14,991 lb (6,800 kg) to better compete in long-range markets served by helicopters such as the larger Sikorsky S-92 and Eurocopter EC225. In 2007, a second production line at the United States AgustaWestland Aerospace plant in Philadelphia, Pennsylvania was established; the Philadelphia plant produced its 200th AW139 in September 2014, at which point U.S. production was intended to reach 40 units per year in the near future. By 2011, AgustaWestland was producing 90 AW139s per year; 9.5% of the company's overall revenue in 2010 was attributed to the type. By 2013, a combined total of 720 AW139s had been sold to over 200 operators in 60 countries. Further development In 2011, a military-configured variant, the AW139M, was revealed by AgustaWestland. It was promoted at the US market, including for the U.S. Air Force's Common Vertical Lift Support Program. The AW139M is equipped with a high definition forward-looking infrared (FLIR), self-protection system, heavy-duty landing gear, and has low thermal and acoustic signatures; a significant proportion of the equipment is sourced from American manufacturers. Options offered include an external stores system including various armaments, armoured seats, self-sealing fuel tanks, and a full ice protection system for all-weather operations. The AW139 serves as the basis for