Xinhuanet, Washington, April 16 According to US media reports on the 16th, the US Federal Aviation Administration has ordered the inspection of the Boeing 737 series passenger aircraft because the fixed bolts on the rear wing are improperly installed, which may cause the passenger aircraft to lose control. According to the report, this must be the airworthiness directive that took effect on May 20, involving six models of the Boeing 737 series of 600, 700, 700C, 800, 900 and 900 ER, but the directive only covers 1050 Boeing 737 registered in the United States. Passenger aircraft. The US Federal Aviation Administration estimates that the cost of inspection and maintenance for each passenger aircraft will be nearly $1,000. According to the report, the US Federal Aviation Administration issued the above order because the agency received reports that the bolts of the fixed horizontal stabilizer of the tail section of the Boeing 737 passenger aircraft were not coated with a corrosion protection coating in the correct manner, which "may reduce horizontal stability. The structural integrity of the unit causes the aircraft to lose control." Boeing issued a statement on the 15th that the airworthiness directive had been brewing "a period of time" before it was issued, not because of a specific security incident in the near future, and would not affect the scheduled flights of US airline operators. Pollen Screen,Anti Pollen Mosquito Net Screens,Anti-Pollen Mesh Screen,Pollen Filter Screen Jinwu Glass Fiber Co., Ltd , https://www.jinwuwindows.com