Airlines must fix a specific sensor that could delay a plane's stall warning

US aviation regulators want to make airlines replace a specific sensor on ATR-GIE Avions de Transport Régional airplanes. This sensor, if faulty, could delay a warning that the plane is about to stall, especially when flying slowly with flaps extended.

This proposed rule means airlines operating these specific aircraft must spend money to replace a part. It addresses a known safety issue that could lead to crashes if pilots do not get a timely warning about an impending stall. This is a routine but critical safety update for a widely used regional aircraft type.