ASN Wikibase Occurrence # 230316
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| Date: | Thursday 31 October 2019 |
| Time: | 23:25 LT |
| Type: |  Airbus Helicopters H225 (EC 225LP) Super Puma |
| Owner/operator: | National 119 Rescue Headquarters |
| Registration: | HL9619 |
| MSN: | 2987 |
| Fatalities: | Fatalities: 7 / Occupants: 7 |
| Aircraft damage: | Destroyed |
| Category: | Accident |
| Location: | 0,5 km SSE off Dokdo Heliport [East Sea] -
 South Korea
|
| Phase: | Initial climb |
| Nature: | Ambulance |
| Departure airport: | Dokdo Heliport |
| Daegu (Taegu) International Airport (TAE/RKTN) | |
| Investigating agency: | ARAIB |
| Confidence Rating: |  Information is only available from news, social media or unofficial sources |
The H225 (EC 225LP) with seven people aboard crashed into the sea near Dokdo shortly after takeoff from a helipad near the lighthouse atop one island. The aircraft departed at 23:25 local time having picked up an injured crab fisherman (a severed thumb). On board were two pilots, three fire department responders, the patient and a friend. Divers found the wreckage 600m offshore at 72m depth. Five bodies and some wreckage has been recovered.
Cause:
The Aviation and Railroad Accident Investigation Commission determines the cause of this accident as follows: "HL9619 crashed due to spatial disorientation of the pilot, who did not perceive the change in aircraft attitude after passing through the steep slope of Dokdo, transitioning from a bright area to a very dark sea immediately after takeoff from the Dokdo Heliport."
Additionally, the contributing factors to this accident are determined as follows:
1. The crew did not receive detailed pre-flight briefings, including mission briefings and task allocation at Dokdo Heliport, from the Central 119 Rescue Headquarters before the flight.
2. During takeoff from Dokdo, the pilot mistakenly believed that the autopilot was in G/A mode and, during the process of accelerating the aircraft, misinterpreted the strong attitude of the aircraft as a climb.
3. Mistaking the aircraft's strong attitude for a climb, the pilot continuously pushed the control stick (Cyclic), rendering the autopilot ineffective (Override), and causing an increase in speed and descent rate.
4. The pilot experienced visual illusions caused by various lights during the approach to Dokdo Heliport, which also influenced the takeoff phase.
Accident investigation:
 |
|
Sources:
https://mainichi.jp/english/articles/20191101/p2g/00m/0in/002000c
https://www.reuters.com/article/us-southkorea-crash/south-korea-searches-for-survivors-of-helicopter-crash-off-disputed-islands-idUSKBN1XA2T9
http://www.koreatimes.co.kr/www/nation/2019/11/281_278051.html
https://en.yna.co.kr/view/AEN20191101000955315
http://www.koreatimes.co.kr/www/nation/2019/11/281_278080.html
https://www.nst.com.my/world/world/2019/11/535099/s-korea-heli-crash-three-bodies-found
https://www.theglobeandmail.com/world/article-south-korea-searches-for-survivors-of-helicopter-crash-off-disputed
http://www.koreaherald.com/view.php?ud=20191103000217
https://en.yna.co.kr/view/AEN20191104002700315
http://www.koreaherald.com/view.php?ud=20191105000623
https://www.bea.aero/en/investigation-reports/notified-events/detail/event/accident-to-the-airbus-ec225-registered-hl9619-on-31102019-at-dokdo-island-investigation-led-by-a/
https://aerossurance.com/safety-management/korean-night-black-hole-spatial-disorientation-fatal-helicopter-accident/
https://www.airbus.com/newsroom/press-releases/en/2017/11/south-korea-s-national-119-rescue-headquarters-acquires-two-h225.html
http://www.koreatimes.co.kr/www/news/nation/2016/11/116_105398.html (helipad)
Location
Media:
Submarine rescue ship mobilised to find victims of crashed chopper near Dokdohttps://t.co/tbDyxJpljT pic.twitter.com/aZFOnklrFi
— BERNAMA (@bernamadotcom) November 2, 2019
3 bodies found at copter crash scene near Dokdo islets https://t.co/sbNbkSj4qP pic.twitter.com/jGatxG1I6A
— TheMalaysianInsight (@msianinsight) November 2, 2019
Search efforts for crashed South Korean helicopter resumes https://t.co/ozQwJplhVv
— Aerossurance (@Aerossurance) November 4, 2019
We translate a Korean report into a emergency service helicopter accident investigation. https://t.co/u6NpCUUQnj #helicopter #flightsafety #aviationsafety #humanfactors pic.twitter.com/N6w1QsVPoM
— Aerossurance (@Aerossurance) November 14, 2023
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 31-Oct-2019 22:49 | Aerossurance | Added |
| 31-Oct-2019 22:49 | Aerossurance | Updated [Total occupants, Nature, Narrative] |
| 31-Oct-2019 22:51 | Aerossurance | Updated [Location, Narrative] |
| 31-Oct-2019 22:52 | Aerossurance | Updated [Narrative] |
| 01-Nov-2019 05:49 | gerard57 | Updated [Aircraft type, Operator, Other fatalities, Phase, Nature, Source] |
| 01-Nov-2019 06:01 | gerard57 | Updated [Source, Narrative] |
| 01-Nov-2019 07:13 | RobertMB | Updated [Aircraft type] |
| 01-Nov-2019 08:29 | Aerossurance | Updated [Narrative] |
| 01-Nov-2019 08:49 | Aerossurance | Updated [Narrative] |
| 01-Nov-2019 08:57 | Aerossurance | Updated [Time, Departure airport, Narrative] |
| 01-Nov-2019 12:11 | Aerossurance | Updated [Source, Narrative] |
| 01-Nov-2019 12:25 | Iceman 29 | Updated [Embed code] |
| 01-Nov-2019 13:47 | Aerossurance | Updated [Embed code] |
| 02-Nov-2019 08:24 | gerard57 | Updated [Source, Damage, Narrative] |
| 02-Nov-2019 08:25 | gerard57 | Updated [Location] |
| 02-Nov-2019 08:51 | Aerossurance | Updated [Location, Phase, Narrative] |
| 02-Nov-2019 08:56 | Anon. | Updated [Location] |
| 02-Nov-2019 08:56 | harro | Updated [Total fatalities] |
| 02-Nov-2019 09:19 | Aerossurance | Updated [Source] |
| 02-Nov-2019 14:00 | RobertMB | Updated [Aircraft type, Operator, Phase, Narrative] |
| 02-Nov-2019 15:39 | Aerossurance | Updated [Aircraft type, Source, Embed code, Narrative] |
| 02-Nov-2019 15:39 | Aerossurance | Updated [Phase, Embed code] |
| 02-Nov-2019 17:51 | RobertMB | Updated [Aircraft type, Phase, Narrative] |
| 02-Nov-2019 17:51 | RobertMB | Updated [Aircraft type] |
| 02-Nov-2019 19:58 | Aerossurance | Updated [Aircraft type, Source, Narrative] |
| 02-Nov-2019 19:58 | Aerossurance | Updated [Phase] |
| 02-Nov-2019 21:52 | RobertMB | Updated [Aircraft type, Narrative] |
| 03-Nov-2019 09:56 | Aerossurance | Updated [Source, Narrative] |
| 04-Nov-2019 07:29 | Aerossurance | Updated [Embed code, Narrative] |
| 04-Nov-2019 07:50 | Aerossurance | Updated [Source, Embed code] |
| 06-Nov-2019 18:38 | Aerossurance | Updated [Source] |
| 08-Nov-2019 10:50 | harro | Updated [Registration, Cn, Total occupants, Destination airport, Source] |
| 08-Nov-2019 10:50 | harro | Updated [Total occupants] |
| 13-Nov-2019 18:07 | Aerossurance | Updated [Source] |
| 24-Jan-2020 09:11 | Anon. | Updated [Location, Narrative] |
| 11-Nov-2023 19:38 | harro | Updated [Time, Location, Departure airport, Source, Narrative, Category, Accident report] |
| 11-Nov-2023 19:44 | harro | Updated [Narrative] |
| 14-Nov-2023 15:17 | Aerossurance | Updated [Source] |
| 14-Nov-2023 16:40 | Anon. | Updated [Source] |
| 14-Nov-2023 17:42 | Aerossurance | Updated [Embed code] |
| 14-Nov-2023 18:20 | harro | Updated [Other fatalities, Embed code] |
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