Boeing 777 is a twin-engine wide-body airliner developed by Boeing Company of the United States. It was officially launched on October 29th, 1990. On June 12th, 1994, Boeing 777-200 made its first flight. On April 19th, 1995, it obtained the joint airworthiness certificate of FAA and Europe in type certificate. On May 17th, 1995, the first aircraft was delivered to users. Boeing 777-300 is an extended version of Boeing 777-200 twin-engine aircraft. On June 26th, 1995, Boeing officially decided to produce 777-300. Prior to this, Boeing conducted a market feasibility survey on whether to extend the 777-200, thus determining the design requirements of the 777-300. The model 300 is 10.1 meters longer than the model 777-200, and its length exceeds that of the Boeing 747.The 777-300 has the same passenger capacity and cruising range as the old Boeing 747, with 368 passengers in the standard cabin 3 layout; There are 451 passengers in the standard cabin 2, and the maximum capacity can be as many as 550 passengers. The voyage reached 11,135 kilometers. The passenger capacity is increased by 20% compared with the benchmark model, which can meet the needs of customers who want to replace the early model of Boeing 747.The first Boeing 777-300 left the factory on September 8, 1997, and made its first flight on October 16, 1997. The Boeing 777-300 took off from paine field and landed at the Boeing Airport in Seattle after a four-hour successful flight. On May 4th, 1998, Boeing obtained the FAA and JAA airworthiness certificates of Boeing 777-300 and the 180-minute double-engine extended flight permit. It was also the first time in the history of obtaining evidence for commercial passenger aircraft on the same day. Boeing 777-300 was officially put into operation on May 27th, 1998. It was once the longest twin-engine jetliner in the world.Boeing 777-300 can be equipped with Pratt & Whitney PW4098, Rolls-Royce Trent 892 and GE90-94B.Some airlines with Pratt & Whitney PW4098 instal:Korean Air,ANA,Japan Airlines