Serious incident to the Airbus A330 registered HB-JHL operated by Swiss on 11/07/2023 en route
Smoke and smell onboard, diversion
Responsible entity
Preliminary data based on the notification from the Swiss authorities:
Fumes / Smell for unknown reason on board (PAN PAN and 7700 squawk), descent to 10’000ft over UK and diversion to Paris, some of the Protective Breathing Equipment have been reported by crew not to work as expected / were difficult to extract from the casing.