Boeing 747-100 accident near Narita, Ja, January 9, 1992
On January 9, 1992 at about 12:00 pm local time, a Boeing 747-100, registered N4729U, was involved in an accident near Narita. It was a flight of an unrecorded kind under scheduled airline rules (Part 121). 1 person was seriously injured; 234 others were unhurt. The weather was visual conditions (good weather).
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this accident. Investigations usually take one to two years; this page updates when the final report is released.
Source: NTSB aviation accident database, copy made October 5, 2026. Docket and reports at the NTSB.
What the record shows
- Date
- January 9, 1992 · about 12:00 pm local time
- Place
- Narita, JA
- Type
- Accident
- Injuries
- 1 person was seriously injured; 234 others were unhurt.
- Weather
- visual conditions (good weather)
- Aircraft
- Boeing 747-100 · all 747-100s on the register
- Registration
- N4729U · no longer on the register
- Damage
- Not recorded
- Flight
- Flight of an unrecorded kind · scheduled airline rules (Part 121)
The factual record from the NTSB's investigation tables, in plain English
The aircraft
- Last inspection: inspection type not recorded
- Maximum gross weight: 710 lb
- Seats: 495
- Landing gear: retractable
- Operator: United Airlines
The flight
- Departed from: RNRT Narita,Japan OF
- Destination: SFO San Francisco CA
- Flight plan: IFR
- Runway 0
- A second pilot was aboard
Weather at the time
- Light: night, dark
- Sky: not recorded; not recorded
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Crew | 16 | |||
| Passengers | 1 | 218 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), has not been read from the NTSB for this case yet; the list appears here once it has. Open the docket at the NTSB.
Other NTSB records under N4729U the same tail number, which may have belonged to a different aircraft at the time
Everything on this page comes from the NTSB's public records. The narrative, probable cause and findings are the NTSB's own words; the coded tables behind the report are written out in plain English, with pilots' ages, home towns and medical details left out. The documents and photographs are the NTSB's docket, shown as the NTSB released them. This site's own text never names anyone involved. A preliminary report can change; the final report usually follows one to two years later, and the page is refreshed when it does.