Boeing 787 door handles keep breaking. Now they need a new part.

The US aviation regulator proposes a new rule for certain Boeing 787 airplanes. This rule requires installing a new retainer on door assist handles that have been pulling loose during pre-flight checks.

A small part failing on a commercial airliner is a big deal. This proposed rule means Boeing and airlines will have to fix a known safety issue on a specific set of planes. It shows how regulators respond to repeated, seemingly minor, mechanical failures before they become major incidents.