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Safety Warning on Sensor Linked to 737 Max Crashes Issued by FAA

Aug. 20, 2019, 6:06 PM

U.S. aviation regulators are urging workers at airports to take extra care around the sensors on the sides of aircraft that failed in two crashes of Boeing Co. 737 Max jets since October.

So-called angle-of-attack vanes, which measure whether a plane’s nose is pointed too high relative to oncoming air to prevent dangerous aerodynamic stalls, are vulnerable to damage, the Federal Aviation Administration said in a notice.

“It is imperative that all operators are aware of the criticality of AOA sensors and the potential for damage during normal operations, maintenance procedures, servicing procedures, and any other procedures around an aircraft ...

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