Serious incident to the Airbus A330 registered HB-JHI operated by Swiss on 13/09/2024 at Zurich
Problème de pressurisation pendant la montée, demi-tour
Responsible entity
Preliminary data based on the notification from the Swiss authorities :
During climb, the maximum cabin pressure altitude was exceeded, whereupon the flight crew donned the oxygen masks and performed an emergency descent. After about an hour of flight time, the aircraft landed back in Zurich.