美国联邦航空局10日下令要求,各航空公司两周内对飞行4万小时以上的波音737-3OO型、4O0型、500型飞机进行紧急安全检查.在此前3天,联邦航空局已下令对波音737-1OO型和2OO型两种老式飞机进行安检,此次安检主要涉及飞机燃料系统的电路导线.上月25日,联邦航空局官员发现美国大陆航空公司的一架波音737飞机通往机翼油箱的电路管道有两个短路后火烧的小 On the 10th, the Federal Aviation Administration ordered that all airlines conduct an emergency security check on Boeing 737-300, 4O0 and 500 aircraft flying more than 40,000 hours in two weeks. In the previous three days, the FAA had ordered Boeing 737-1OO type and 2OO two kinds of vintage aircraft for security inspection, the security mainly related to the aircraft fuel system circuit wire.At the 25th of last month, FAA officials found that a Continental Airlines Boeing 737 aircraft to the machine The circuit of the wing tank has two small fires which are short-circuited