Bell 412 accident near Matsumoto, Jp, March 5, 2017
On March 5, 2017 at about 4:53 am local time, a Bell 412 (helicopter), registered JA97NA, was substantially damaged in an accident during enroute (cruise) near Matsumoto. 9 people were killed.
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
- March 5, 2017 · about 4:53 am local time
- Place
- Matsumoto, Japan · map
- Type
- Accident
- Injuries
- 9 people were killed.
- Weather
- not recorded
- Aircraft
- Bell 412 EP · all 412s on the register
- Registration
- JA97NA · no longer on the register · serial 36135
- Damage
- Substantial damage
- Flight
- Flight
The NTSB's narrative preliminary · quoted from the NTSB record
import
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
- Unknown or undetermined during enroute (cruise) defining event
The aircraft
- Landing gear: fixed
- Not recorded
Weather at the time
- Temperature: 0°F (-18°C), dew point 0°F (-18°C)
Injuries
| Fatal | Serious | Minor | None | |
|---|---|---|---|---|
| Flight crew | 1 | |||
| Passengers | 8 |
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.