De Havilland planes must get new valves after in-flight warnings

The US aviation regulator is ordering inspections and replacements for certain valves on De Havilland DHC-8-401 and -402 airplanes. This order comes after pilots received caution messages about isolation valves during a flight.

This is a routine safety update for a specific aircraft model. It means operators of these planes must now perform inspections and replace parts to prevent future in-flight issues. These types of directives are common in aviation, ensuring that known safety problems are addressed across all affected aircraft.