A United Boeing 777-200, registration N228UA performing flight UA-926 from San Francisco,CA (USA) to Frankfurt/Main (Germany), was climbing through FL290 when the crew stopped the climb and decided to return to San Francisco due to the right hand engine (PW4090) emitting a bang. The crew shut the engine down and returned to San Francisco for a safe landing on runway 28R about one hour after departure.
Passengers reported there was a loud bang from the right hand engine, the lights flickered, then the engine was shut down.
A replacement Boeing 777-200 registration N799UA reached Frankfurt with a delay of about 5.5 hours.
The occurrence aircraft is still on the ground in San Francisco about 37 hours after landing.
https://flightaware.com/live/flight/UAL926/history/20260710/0236Z/KSFO/EDDF
Passengers reported there was a loud bang from the right hand engine, the lights flickered, then the engine was shut down.
A replacement Boeing 777-200 registration N799UA reached Frankfurt with a delay of about 5.5 hours.
The occurrence aircraft is still on the ground in San Francisco about 37 hours after landing.
https://flightaware.com/live/flight/UAL926/history/20260710/0236Z/KSFO/EDDF
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