Boeing 777-200ER(Extended Range), also known as -200IGW(Increased Gross Weight), belongs to the B-type market, which mainly increases the fuel tank capacity and the maximum takeoff weight to 580,000-631,000 pounds, and the range is increased to 14,260 kilometers. The first Boeing 777-200ER obtained the airworthiness certificate on January 17th, 1997 and delivered it to British Airways on February 6th, 1997.Boeing 777-200ER can be equipped with Pratt & Whitney PW4090, Rolls-Royce Trent 895 and GE GE90-94B engineSome airlines with Pratt & Whitney PW4090 installed on 777-200ER: United Airlines, Japan Airlines, All Nippon Airways and Boeing Prototype,Korean Air,Asiana Airlines, Vietnam Airlines