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| Date: | Tuesday 22 April 2025 |
| Time: | c. 15:15 UTC |
| Type: |  Boeing 777-322ER |
| Owner/operator: | United Airlines |
| Registration: | N2136U |
| MSN: | 62648/1477 |
| Year of manufacture: | 2017 |
| Engine model: | General Electric GE90-115B |
| Fatalities: | Fatalities: 0 / Occupants: 4 |
| Other fatalities: | 0 |
| Aircraft damage: | Minor |
| Location: | far east of Japan -
 Pacific Ocean
|
| Phase: | En route |
| Nature: | Ferry/positioning |
| Departure airport: | Hong Kong International Airport/Chek Lap Kok (HKG/VHHH), Hong Kong |
| Honolulu/Daniel K. Inouye International Airport (HNL/PHNL), HI, USA | |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
A United Airlines' Boeing 777-300ER, operating a cargo flight from Hong Kong to Honolulu, USA suffered No.1 engine trouble while en route over Pacific Ocean far east of Japan at c. 15:15 UTC (00:15 Japan Standard Time of 23rd). The flight diverted to Tokyo International Airport/Haneda (HND/RJTT), Japan where a safe landing was carried out at 03:38 LT. No reported injuries.
The flight restarted six and a half hours later.
The aircraft had been undergoing maintenance in Hong Kong from 12 to 22 April.
Sources:
https://www.sankei.com/article/20250423-2C3KLOMTT5EPTC6VLA5H2H6ISM/
https://www.flightradar24.com/data/flights/ua3921#3a005e1d
Location
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 27-May-2025 08:00 | isamuel | Added |
| 27-May-2025 08:02 | ASN | Updated [Nature, Narrative, ] |
| 28-May-2025 08:41 | ASN | Updated |
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