DUBLIN — A Swiss International Air Lines flight bound for Boston was forced to make an emergency diversion to Ireland on August 9, 2026, after declaring a Mayday over the mid-Atlantic due to onboard smoke caused by a small fire in the cabin.
Flight LX52, operated by a 13-year-old Airbus A330-300 (registration HB-JHN), departed Zurich Airport at 18:22 CEST from Runway 16, smoothly climbing to its initial cruising altitude of 36,000 feet over French airspace.
Mid-Atlantic Emergency
Roughly three hours into the transatlantic crossing, while deep over the North Atlantic, the flight crew issued an emergency Mayday call. The alert was triggered following reports of smoke filling sections of the cabin stemming from a small onboard fire according to a source.
In response, air traffic controllers and emergency services initially prepared a diversion response plan at Shannon Airport. However, the flight crew subsequently opted to alter course to Dublin Airport (DUB) instead according to source.
Diverted and Met by Emergency Crews
Vectoring toward Ireland, the widebody jet descended to 31,000 feet as it made its approach toward the Irish coast.
Exactly 4 hours and 41 minutes after departing Zurich, the Airbus A330 safely touched down on Runway 28L at Dublin Airport, where it was immediately met on the taxiway by Airport Fire Services.
Flight Overview
Swiss Flight LX52
- Origin: Zurich Airport (ZRH) | Dep. 18:22 CEST (Rwy 16)
- Destination: Boston Logan (BOS) -> Diverted to Dublin (DUB)
- Aircraft: Airbus A330-300 (Reg: HB-JHN | Age: 13 years)
- Cruising Altitude: 36,000 ft (initial) -> 31,000 ft (descent)
- Touchdown: DUB Runway 28L (4h 41m flight time)
Passengers Disembarked and Rebooked
All passengers were safely offloaded following the landing without further incident. Airport staff and airline representatives arranged rebooking and accommodations for travelers overnight.
The aircraft remained on the ground in Dublin undergoing inspection and maintenance checks before its scheduled positioning flight back to Zurich the following day.
