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Medical emergency and diversion to Almaty of Swiss flight LX123

Sequence & Resolution

Event Date05/06/2026
Level
Incident
CategoryMedical Problem
Flight PhaseEn Route
Technical Issue Details
The Airbus A350-941 aircraft (HB-IFB) was performing Swiss flight LX123 from Seoul (ICN) to Zurich (ZRH) with 241 occupants on board.
Approximately six hours into the flight, the co-pilot suffered a sudden medical emergency.
Outcome / Handling
Three doctors on board provided immediate medical assistance to the co-pilot.
The flight crew decided to divert to Almaty International Airport (ALA) for urgent medical care, landing safely.
The co-pilot was transported to a local hospital for further treatment.
Current Status
The 227 passengers and remaining crew members were accommodated in hotels in Almaty.
SWISS arranged for a replacement crew to be flown to Almaty to complete the flight to Zurich.

Flight Information

Flight NumberLX123
Flight Duration360 minutes