Airbus helicopters must fix window systems that can be opened by hand

The US aviation regulator proposes a new rule for a specific model of Airbus helicopter. It would require owners to fix a problem where emergency exit windows can be opened too easily.

This is a small, specific safety fix for a particular helicopter model. It means that a known defect, where self-locking nuts on emergency windows can loosen, must now be addressed. The rule also prevents installing these faulty windows on any affected helicopter.