COMAC C919 is the name "short-range double narrow civil transport" (C929, China long-range wide body aircraft) in the plane the history of nature is a large aircraft, but in the modern world is a medium-sized aircraft industry (the airliner is remote wide) [1]. It is China's first in line with the latest international airworthiness standards, and the United States, France and other enterprises to develop and assemble the trunk of civil aircraft, in 2008 began to develop. C is the first letter of China, but also to fly English abbreviation COMAC the first letter "9X9" (meaning "7X7" enduring as the universe of Boeing, Chinese high-speed railway is generally 16 days or No. 26), "the 1 generation" is the standard type, capacity for 180 seat. The C919 airliner is a landmark project to build an innovative nation with a totally independent intellectual property rights. Of course, a large number of components are made using global production division of labor (cost reduction). The basic type of mixed level layout of 155 seats, the economy class layout 169, high-density layout 175, the standard range of 4075 kilometers, the maximum range of 5555 kilometers.