Boeing 757s need new landing gear parts, or a records check

The US aviation regulator proposes that certain Boeing 757 airplanes must either replace their main landing gear outer cylinders or prove they already have the correct parts. This is because some cylinders were improperly ground, which could cause heat damage and lead to unsafe conditions.

Aviation regulators issue these directives when a specific part or manufacturing process is found to be unsafe. This means airlines operating these specific Boeing 757 models will have to spend money on inspections and potentially new parts. It also means that the regulator is actively monitoring and correcting manufacturing defects that could affect flight safety.