FAA Orders Operators to Test Switches On 9,300 Boeing 737 Planes for Possible Failures Written 16 July 2021


WestJet Boeing 737 MAX 8 landing. | Acefitt\Wikipedia

Reuters reports that on Thursday, The FAA “issued a directive to operators of all Boeing Co 737 series airplanes to conduct inspections to address possible failures of cabin altitude pressure switches.” The order, which “covers 2,502 U.S.-registered airplanes and 9,315 airplanes worldwide,” requires operators “to conduct repetitive tests of the switches and replace them if needed.” The FAA indicated that malfunctioning switches “could result in the cabin altitude warning system not activating if the cabin altitude exceeds 10,000 feet (3,050 m), at which point oxygen levels could become dangerously low.”
Full Story (Reuters)