# NTSB DCA19WA156: Boeing 787, Japan, June 1, 2019

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Foreign investigation
- Date: June 1, 2019
- Place: Japan
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331)
- Highest injury: No injuries
- Injuries: 163 uninjured
- Status: Led by another country's authority
- NTSB office: Major Investigations Division
- Lead agency: Other
- NTSB case key (mKey): 99552
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA19WA156
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/99552/pdf
- Page: https://openairdocs.org/ntsb/DCA19WA156

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Enroute: Pressure/environ sys malf/fail](https://openairdocs.org/ntsb-events/331) (defining event); cases with it: [All aircraft, 116 cases](https://openairdocs.org/ntsb-events/331/sequence.md)

## Factual narrative

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.

## Aircraft

- Registration: JA828A (not matched to a registry record)
- Reported make and model: BOEING 787
- Category: Airplane
- Serial number: 42248
- Damage: No damage
- Flight: Non-U.S., commercial
- Operator: All Nippon Airways
- Airworthiness certificate: Standard, Transport

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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