Created Monday, Nov 24th 2025 17:10Z, last updated Monday, Nov 24th 2025 17:10Z
A United Boeing 767-300, registration N665UA performing flight
UA-12 from Zurich (Switzerland) to Chicago O'Hare,IL (USA), was enroute at FL320 about 60nm north of London Heathrow,EN (UK) when the crew decided to divert to Heathrow reporting fumes on board. The aircraft landed safely on Heathrow's runway 27R about 30 minutes later.
A passenger reported it appeared there were engine problems shortly after departure, a number of passengers and cabin crew became sick, the aircraft diverted to London.
The remainder of the flight was cancelled.
The aircraft remained on the ground for about 24 hours, then continued to Chicago O'Hare as flight UA-3908 reaching Chicago estimated to land with a delay of about 26 hours.
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