ANC18WA023 · Sikorsky UH-60M (S-70)
National Airborne Service Corps. Taiwan Sikorsky UH-60M (S-70) · Accident
From Lanyu Airport (RCLY) to Taitung Fengnian Airport
Narrative check · The NTSB narrative appears to contradict this record's operation. Values are shown as recorded, not corrected; compare with the narrative.
Event
- NTSB case
- ANC18WA023
- Event typeAccident: someone killed or seriously injured, or the aircraft substantially damaged (NTSB definition). Incident: an occurrence that affected or could have affected safety, short of that. Glossary
- Accident
- InvestigationHow far the investigation had got when the record was published: preliminary, ongoing, final or completed. Unknown where the source does not say. Glossary
- Final · Taiwan Transportation Safety Board final report, 24 Sept 2019
- API-reported fatalities
- 6 · all aircraft and ground
- Ground fatalities
- Unknown
- OperationWhat kind of flying it was, grouped by the rules it flew under: airline (US Part 121), air taxi and commuter (Part 135), general aviation (Part 91 and similar), military or government. Glossary
- Government Narrative disagrees
- WeatherVisual meteorological conditions (VMC): good enough to fly by looking outside. Instrument conditions (IMC): cloud or low visibility, flying by instruments. Glossary
- Not recorded
Sikorsky UH-60M (S-70)
- Aircraft type
- Sikorsky UH-60
- Category
- Helicopter
- RegistrationThe aircraft's tail number, such as N12345 or G-ABCD. Registrations are reissued, so the same one years apart can be a different aircraft. Glossary
- NA706
- Onboard fatalities
- Unknown
- Route
- From Lanyu Airport (RCLY), Lanyu AirportTo Taitung Fengnian Airport
- Aircraft age
- Not recorded
- Flight rulesThe regulations the flight operated under: in the US, Part 91 (general aviation), Part 121 (airlines), Part 135 (air taxi and commuter) and others; for flights abroad, the NTSB's coarser commercial or non-commercial code. Glossary
- Public Aircraft
- Phase of flightThe stage of the flight when things started to go wrong: standing, taxi, takeoff, initial climb, en route, maneuvering, approach or landing. Glossary
- Unknown
- Defining eventThe single coded event the NTSB judges best describes what happened (records from 2008 on). Older records name the first occurrence in the sequence instead. Glossary
- Unknown or undetermined
- DamageDestroyed: beyond practical repair. Substantial: damage that affects the structure, performance or handling and normally needs major repair. Minor: less than that. Glossary
- Destroyed
Cause areas
No findings designated as a cause are recorded in the NTSB data yet.
Approximate · Coordinates from the NTSB case API, which marks them as estimated or does not say; no uncertainty radius is established.
NTSB narrative
The foreign authority was the source of this information.
On February 05, 2018, about 2352 local time, a Sikorsky UH-60M helicopter, NA-706, operated by National Airborne Service Corps. of the Ministry of Interior, Taiwan R.O.C., went missing and is presumed to have crashed in open ocean waters shortly after departure from the Lanyu Airport (RCLY), located on Orchid Island, Taitung, Taiwan. Of the six occupants on board, the three crew members and three passengers, remain missing, and the helicopter is presumed to have been destroyed.
The investigation is under the jurisdiction of the Government of Taiwan. This report is for information purposes only and contains only information released by or obtained by the Government of Taiwan. Further information pertaining to this accident may be obtained from:
Aviation Safety Council, Taiwan
11th Floor, 200, Section 3, Beixin Road, Xindian District
New Taipei City 231, Tiawan (R.O.C.)
Tel: 886-1-89127388
Fax: 886-2-8912-7399
E-Mail: info@scaa.sy Website: www.asc.gov.tw
Verbatim NTSB factual narrative from the NTSB dataset
Sources
NTSB record ANC18WA023
- Event ID
- 20180211X43513
- Case number
- ANC18WA023
- Dataset
- full-current
- Source SHA-256
- 5cf380f0061817c0331a6b2d8cc7e0ee3a79bea469a1001dc5c10e56f35f5ab3
Source notes (5)
- Unreviewed is an editorial label, not an investigation status. API-sourced is not report-checked or human-reviewed. Explicit event totals are used without summing aircraft injury tables; onboard allocation is withheld. Unknown values remain unknown. The operation category is mapped from the NTSB-reported FAR part and has not been reviewed.
- Filled from the NTSB case API where the bulk record had no value: coordinates. Values present in the bulk record are kept.
- The date is the local date, which is the same as the UTC date the NTSB stores.
- API snapshot SHA-256: b4a2be9868743c1d8457252897365d6eef8c8400125611d3ef4977c7d2183416; retrieved 2026-09-15T06:32:52.959Z.
- Checked against the Taiwan Transportation Safety Board (TTSB, 國家運輸安全調查委員會), Taiwan final report (2019-09-24) on 2026-09-18. The report states the same date, fatalities, registration, operator and damage. Taken from the report: departure, destination and type of operation. Not checked: place, crash-site coordinates, flight number, aircraft type and ground fatalities.