United B763 near London on Nov 23rd 2025, fumes on board

Last Update: November 24, 2025 / 17:10:05 GMT/Zulu time

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Incident Facts

Date of incident
Nov 23, 2025

Classification
Incident

Cause
Fumes on board

Airline
United

Flight number
UA-12

Departure
Zurich, Switzerland

Destination
Chicago O'Hare, United States

Aircraft Registration
N665UA

Aircraft Type
Boeing 767-300

ICAO Type Designator
B763

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.
Aircraft Registration Data
Registration mark
N665UA
Country of Registration
United States
Date of Registration
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Manufacturer
BOEING
Aircraft Model / Type
767-322
Number of Seats
Ddd Subscribe to unlock
ICAO Aircraft Type
B763
Year of Manufacture
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Serial Number
Jqpfg Subscribe to unlock
Aircraft Address / Mode S Code (HEX)
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Engine Count
D Subscribe to unlock
Engine Manufacturer
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Engine Model
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Engine Type
Mnibhmmh Subscribe to unlock
Pounds of Thrust
KhqA Subscribe to unlock
Main Owner
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Incident Facts

Date of incident
Nov 23, 2025

Classification
Incident

Cause
Fumes on board

Airline
United

Flight number
UA-12

Departure
Zurich, Switzerland

Destination
Chicago O'Hare, United States

Aircraft Registration
N665UA

Aircraft Type
Boeing 767-300

ICAO Type Designator
B763

This article is published under license from Avherald.com. © of text by Avherald.com.
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