# NTSB ANC17WA031: Bell 214, Dongducheon, South Korea, June 13, 2017

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Foreign investigation
- Date: June 13, 2017
- Place: Dongducheon, South Korea
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Defining event: [Approach: Unknown or undetermined](https://openairdocs.org/ntsb-events/000)
- Highest injury: Serious injuries
- Injuries: 2 serious
- Status: Led by another country's authority
- NTSB office: Alaska Regional Office
- Lead agency: Other
- NTSB case key (mKey): 95403
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ANC17WA031
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/95403/pdf
- Page: https://openairdocs.org/ntsb/ANC17WA031

## Sequence of events

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

- [Approach: Unknown or undetermined](https://openairdocs.org/ntsb-events/000) (defining event); cases with it: [All aircraft, 1,703 cases](https://openairdocs.org/ntsb-events/000/sequence.md)

## Factual narrative

On June 13, 2017, about 1810 local time, a Republic of Korea registered Bell 214B helicopter, HL9157, operated by UB Air, impacted remote mountainous terrain about 3 miles northeast of Dongducheon, Republic of Korea, during the approach to a drop zone while conducting an external load operation. The helicopter sustained substantial damage and the 2 pilots received serious injuries. The investigation is under the jurisdiction of the Aviation and Railway Accident Investigation Board, Republic of Korea. As the state of manufacture of the helicopter and the engine, the National Transportation Safety Board has designated a US accredited representative to assist the Aviation and Railway Accident Investigation Board. Further information pertaining to this accident may be obtained from: Aviation and Railway Accident Investigation Board Ministry of Land, Infrastructure and Transport #94 Dasom-Ro 2 Sejong Self-Governing City, 339-012 Republic of Korea Phone: +82 (44) 201-5447 Fax: +82 (44) 201-5698 http://araib.molit.go.kr/intro.do

## Aircraft

- Registration: HL9157 (not matched to a registry record)
- Reported make and model: BELL 214 (B)
- Category: Helicopter
- Serial number: 28006
- Damage: Substantial damage
- Fire: Unknown

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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