ASN Wikibase Occurrence # 214287
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| Date: | Friday 10 August 2018 |
| Time: | c. 10:00 LT |
| Type: |  Bell 412EP |
| Owner/operator: | Toho Air Service opf Gunma Prefectural Air Rescue |
| Registration: | JA200G |
| MSN: | 36132 |
| Year of manufacture: | 1996 |
| Total airframe hrs: | 7239 hours |
| Fatalities: | Fatalities: 9 / Occupants: 9 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | near Mt Yokote, Gunma Prefecture -
 Japan
|
| Phase: | En route |
| Nature: | Survey |
| Departure airport: | Gunma Heliport |
| Gunma Heliport | |
| Investigating agency: | JTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
The contact was lost after 10:01 LT, and the helicopter was subsequently found crashed near Mt. Yokote, Gunma prefecture before 15:00 LT. All nine on board received fatal injuries.
The Bell 412EP, named "Haruna" (after Mt. Haruna), was on an inspection flight for a new mountain trail which will be open the next day. Those aboard were two prefectural disaster management officials, two employees of Toho Air Service Co and five firefighters, according to the prefectural government.
JTSB: "In this accident, it is probable that, while flying over mountainous areas for exploration of mountain climbing trail, the Helicopter entered the cloudy airspace and was unable to continuously recognize the ground surface due to lowered visibility, and the captain who was exposed to spatial disorientation could not perform an appropriate maneuvering to maintain the attitude of the Helicopter that subsequently crashed into the slope of the mountain.
It is probable that losing continuous visual recognition of the ground surface in the lowered visibility were caused by delayed decision to return and continuing flight in the situation that it was getting difficult to maintain VMC"
Accident investigation:
 |
|
Sources:
https://headlines.yahoo.co.jp/hl?a=20180810-00010006-fnnprimev-soci
https://headlines.yahoo.co.jp/hl?a=20180810-00000057-asahi-soci
https://headlines.yahoo.co.jp/hl?a=20180810-00000047-mai-soci
https://headlines.yahoo.co.jp/hl?a=20180810-00050055-yom-soci
https://headlines.yahoo.co.jp/hl?a=20180810-00000540-san-soci
http://www.news24.jp/articles/2018/08/10/07401125.html
https://www3.nhk.or.jp/news/html/20180810/k10011572131000.html?utm_int=news-social_contents_list-items_002
https://headlines.yahoo.co.jp/hl?a=20180810-00000050-mai-soci
https://headlines.yahoo.co.jp/hl?a=20180810-00000066-asahi-soci
https://headlines.yahoo.co.jp/hl?a=20180810-00000066-asahi-soci
https://www3.nhk.or.jp/news/html/20180810/k10011572191000.html?utm_int=news-social_contents_list-items_002
http://www.news24.jp/articles/2018/08/10/07401147.html
https://www3.nhk.or.jp/news/html/20180810/k10011572431000.html?utm_int=news-social_contents_list-items_006
https://news.yahoo.co.jp/hl?c=soci&p=2
http://www.thejakartapost.com/news/2018/08/10/helicopter-with-nine-aboard-crashes-in-central-japan.html
https://www3.nhk.or.jp/news/html/20180811/k10011573391000.html?utm_int=news-social_contents_list-items_005
https://japantoday.com/category/national/Debris-of-missing-helicopter-found-on-Gunma-Nagano-mountain-border
https://english.kyodonews.net/news/2018/08/7fd71849829a-death-toll-in-rescue-helicopter-crash-in-east-japan-rises-to-4.html
https://www.japantimes.co.jp/news/2020/02/27/national/helicopter-crash-gunma/#.XlgfWnEYBaS
http://www.mlit.go.jp/jtsb/eng-air_report/JA200G.pdf
Location
Media:
群馬県防災航空隊
— 🚁すけ🏳️🌈 (@USAFAC130) 6 août 2018
JA200G
はるな pic.twitter.com/39BIcRfPMe
Pilot’s vertigo caused deadly 2018 helicopter crash, government report says https://t.co/2Q6Y4ujRlL
— Aerossurance (@Aerossurance) February 27, 2020
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 10-Aug-2018 06:32 | isamuel | Added |
| 10-Aug-2018 07:03 | isamuel | Updated [Source, Damage, Narrative] |
| 10-Aug-2018 08:44 | Iceman 29 | Updated [Embed code] |
| 10-Aug-2018 10:25 | gerard57 | Updated [Total fatalities, Other fatalities, Narrative] |
| 10-Aug-2018 10:50 | isamuel | Updated [Total fatalities, Other fatalities, Source, Narrative] |
| 10-Aug-2018 18:25 | Iceman 29 | Updated [Embed code] |
| 10-Aug-2018 18:41 | Iceman 29 | Updated [Embed code] |
| 10-Aug-2018 20:22 | Aerossurance | Updated [Source, Embed code] |
| 11-Aug-2018 05:40 | gerard57 | Updated [Total fatalities, Narrative] |
| 11-Aug-2018 07:35 | isamuel | Updated [Location, Source, Narrative] |
| 12-Aug-2018 14:31 | Aerossurance | Updated [Operator, Location, Source, Narrative] |
| 27-Feb-2020 20:07 | Aerossurance | Updated [Source, Embed code, Narrative] |
| 12-Nov-2023 20:32 | harro | Updated [Other fatalities, Embed code, Category, Accident report] |
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