Boeing 787 incident near Unknown, Jp, June 1, 2019
On June 1, 2019 at about 2:00 pm local time, a Boeing 787, registered JA828A, was involved in an incident during enroute near Unknown. It was flown under non-U.S. commercial rules. No one was hurt; 163 people were on board or involved.
The NTSB's probable cause their words, unchanged
The NTSB has not yet published a probable cause for this incident. 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
- June 1, 2019 · about 2:00 pm local time
- Place
- Unknown, Japan
- Type
- Incident
- Injuries
- No one was hurt; 163 people were on board or involved.
- Weather
- not recorded
- Aircraft
- Boeing 787 · all 787s on the register
- Registration
- JA828A · no longer on the register · serial 42248
- Damage
- Not recorded
- Flight
- Flight · non-U.S. commercial rules
The NTSB's narrative preliminary · quoted from the NTSB record
The Japan Transport Safety Board (JTSB) has notified the NTSB of a serious incident involving a BOEING 787 airplane that occurred on June 01, 2019. The NTSB has appointed a U.S. Accredited Representative to assist the government of Japan's investigation under the provisions of ICAO Annex 13.All investigative information will be released by the JTSB.
The complete narrative as the NTSB published it. The NTSB's docket holds the report as a PDF and any photographs, statements and other documents from the investigation.
The factual record from the NTSB's investigation tables, in plain English
What happened, in order
- Pressure/environ sys malf/fail during enroute defining event
The aircraft
- Landing gear: retractable
The flight
- A second pilot was aboard
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Cabi | 8 | |||
| Flight crew | 4 | |||
| Passengers | 151 |
Documents from the investigation the NTSB's docket: the evidence folder behind the report
The NTSB has not released the docket for this case yet. The docket, the folder of records gathered during an investigation (maintenance records, photographs, witness statements, examinations), is usually released when the investigation is nearly complete, and the list here is refreshed when it appears. Check at the NTSB.
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.