The Boeing 777 is a mid to long range twin engine wide body aircraft manufactured by Boeing in the United States. It is the world's largest twin engine wide body aircraft, with a passenger capacity ranging from 283 to 368 in the third class cabin and a range of 5000 to 9000 nautical miles (9000 to 17000 kilometers). The Boeing 777 is a twin engine medium to long range wide body aircraft developed by Boeing Company in the United States. The development plan was officially launched on October 29, 1990. The first Boeing 777 made its maiden flight on June 12, 1994. On April 19, 1995, it obtained the European Joint Airworthiness Certificate and the Federal Aviation Administration's Type Certificate. On May 30, 1995, it was approved for a 180 minute twin engine extended range flight (ETOPS). The first aircraft was delivered to user United Airlines on May 17, 1995. The Boeing 777 is between the B767-300 and B747-400 in terms of size and range, with the characteristics of flexible cabin layout, wide range, and different models that can meet constantly changing market demands.High end version:https://www.simpleplanes.com/a/8JDu2g/B777-300ER-CHINA-SOUTHERN-High-end-version#