Bombardier jet owners must check thrust reverser seals for defects

The US aviation regulator is requiring inspections of a specific part on certain Bombardier business jets. Owners must check the pivot door pressure seals on the thrust reversers for damage or missing parts, and then perform a functional test of the thrust reversers.

This rule means that owners of these specific Bombardier jets now have a mandatory maintenance task. It addresses a known safety issue where seals on a critical flight control component can fail. This type of directive is how regulators ensure ongoing safety for aircraft already in service.