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U.S. FAA Orders Inspections of Boeing 737 Cabin Air Sensors

  • Action follows discovery of cabin pressure sensor failures
  • Boeing initially found no safety issue, but reversed itself
Preparations Ahead Of The Farnborough International Airshow 2014

Photographer: Simon Dawson/Bloomberg

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More than 2,500 Boeing Co. 737 jets in the U.S. will have to be inspected after the company and regulators discovered a potential flaw in a pressure switch that could lead to pilots becoming incapacitated.

The Federal Aviation Administration said airlines and operators should inspect cabin pressure switches, which help ensure there’s sufficient air to breathe as planes climb to higher altitudes. The failure rate of the switches is “much higher than initially estimated” and poses a safety risk, the FAA said in a directive posted to the Federal Register website Thursday.