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Share with friends and circles of friends with wechat scanning QR code < / P > < p > < p > the number of aircraft involved in the incident in the United States reached 282. The FAA estimated that each aircraft would take about 90 hours to inspect and repair, and the related cost would reach US $14million. Airlines will adopt the new inspection procedures within 60 days after the directive takes effect and carry out maintenance within 60 months < p > < / P > < p > Boeing, the American aviation giant, seems to be in big trouble again On Monday, July 25, some media reported that the Federal Aviation Administration (FAA) was ordering many American Airlines carrying Boeing 777 wide body aircraft to inspect and repair relevant aircraft, so as to eliminate the risk of fuel tank explosion of this type of aircraft

in a draft airworthiness directive, the FAA urged airlines to inspect Boeing 777 aircraft, install Teflon sleeves / seals / gaskets, and reinforce specific parts of the middle, left, and right main fuel tanks of the aircraft. This order involved 282 aircraft of the same type in the United States

faa estimates that each aircraft will take about 90 hours to inspect and repair, and the related cost will reach US $14million. Airlines should adopt new inspection procedures within 60 days after the FAA directive takes effect, and carry out maintenance within a maximum of 60 months

Boeing responded:

we have known the documents being drafted by the FAA, and have issued guidance to airlines using 777 airliners before that. We fully support FAA's recommendations < p > Boeing closed down nearly 1% on Monday and has fallen about 25% this year

this is not the first time that the 777 aircraft has encountered a similar problem

previously, the FAA issued similar instructions in 2017, requiring more 777 models to be overhauled - from 777-200 models to 777-300 ER and other series. FAA said in the document at that time that the move was intended to "prevent the internal arc of the aircraft's main fuel tank and middle fuel tank caused by fault current or lightning strike. If the arc encounters flammable aviation fuel gas, it may cause the fuel tank to explode and then cause aircraft damage"

the Boeing 777 is a medium and long-range twin engine wide body airliner, which is currently the largest twin engine wide body airliner in the world. The passenger capacity of the third class cabin is from 283 to 368, and the range is from 9695 km to 17500 km. The Boeing 777 adopts a circular fuselage design with a larger width. The landing gear has 14 wheels. The Boeing 777-300ER adopts a general electric GE90-115B engine with a diameter of 3.43 and a maximum thrust of 569 kn in the experiment

Boeing has invested a lot of resources to develop the 777, which is the first commercial aircraft that fully adopts computer-aided design, and it has proved that the Boeing 777 is a successful aircraft in terms of sales. Among the major airlines in the world, Boeing 777 basically has a place, among which Emirates is the largest operator, followed by United Airlines and Air France

in order to compete with Airbus a350-900/1000, Boeing developed Boeing 777 x, of which 777-9x is more than 747-8 in length, and will become the longest civil aircraft in the world. The 777 x is expected to enter service in 2025

2023-03-22 10:04:54