Aircraft
FAA Calls For Boeing 737 Cabin Pressure Switch Inspections
An FAA airworthiness directive was issued to assess the risk of dual-switch failures in 737 airliner cabin pressure systems.

The FAA on Friday confirmed that it has issued an airworthiness directive (AD) requiring inspections for all Boeing 737 airliners to address possible failures of cabin altitude pressure switches. If both of the pressurization system’s dual switches were to fail during an inflight depressurization event, this could result in the cabin altitude warning system not activating if cabin altitude exceeds 10,000 feet, causing oxygen levels to be dangerously low.


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