Older planes need more frequent inspections for cracks, but can get a permanent fix

US aviation regulators are requiring more frequent inspections for cracks on certain De Havilland DHC-8-400 series airplanes. This rule also offers a permanent fix that would end the need for repeated checks.

This rule means operators of these specific planes must now spend more on maintenance, unless they invest in the permanent fix. The change comes after new damage was found on parts that control the plane's elevators. This is a common pattern in aviation: regulators respond to new findings in the field by tightening inspection requirements, which pushes manufacturers and operators to find more durable solutions.