United B763 near Moncton on Sep 13th 2026, multiple system faults

Last Update: September 23, 2026 / 18:19:40 GMT/Zulu time

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Incident Facts

Date of incident
Sep 13, 2026

Classification
Incident

Airline
United

Flight number
UA-934

Departure
Newark, United States

Destination
London Heathrow, United Kingdom

Aircraft Registration
N671UA

Aircraft Type
Boeing 767-300

ICAO Type Designator
B763

A United Boeing 767-300, registration N671UA performing flight UA-934 from Newark,NJ (USA) to London Heathrow,EN (UK) with 168 people on board, was enroute at FL370 about 140nm west of Moncton,NB (Canada) when the crew descended the aircraft to FL350, however, ADS-B data suggest the aircraft could not maintain FL350 descending and climbing around that flight level with altitude deviations of up to +/- 300 feet. The crew consulted with maintenance and dispatch due to the loss of autopilot, autothrottle, TCAS and windshear warning functions believed to be associated to the loss of TAT (Total Air Temperature) data. The crew attempted a reset of the TAT system without success, declared emergency and subsequently turned the aircraft around about 80nm northwest of Moncton to return to Newark. The aircraft landed safely on Newark's runway 22L about 90 minutes after turning around.

The Canadian TSB reported the TAT probe was replaced, subsequent testing was satisfactory.

The aircraft returned to service about 22 hours after landing.
Aircraft Registration Data
Registration mark
N671UA
Country of Registration
United States
Date of Registration
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Manufacturer
BOEING
Aircraft Model / Type
767-322
Number of Seats
PAf Subscribe to unlock
ICAO Aircraft Type
B763
Year of Manufacture
IAdb Subscribe to unlock
Serial Number
AimAc Subscribe to unlock
Aircraft Address / Mode S Code (HEX)
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Engine Count
J Subscribe to unlock
Engine Manufacturer
mAdc Subscribe to unlock
Engine Model
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Engine Type
CeingmApc Subscribe to unlock
Pounds of Thrust
DAbnA Subscribe to unlock
Main Owner
AgmnlqfjkgAjibi pA kchjl ehqcb gcldjipmjp nAeiegqiqbffgidjkjgcfqephijdhpccgAqdAbpqjmbelnhblnfneppljh Subscribe to unlock
Incident Facts

Date of incident
Sep 13, 2026

Classification
Incident

Airline
United

Flight number
UA-934

Departure
Newark, United States

Destination
London Heathrow, United Kingdom

Aircraft Registration
N671UA

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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