# NTSB GAA25WA242: MD Helicopters 600N, N600MW, Storrington, United Kingdom, August 15, 2025

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 5 · Foreign
- Date: August 15, 2025, 13:00 local (13:00 UTC)
- Place: Storrington, United Kingdom · 50.883°,?-0.488
- Coordinates: 50.883, -0.488 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=50.8830&lon=-0.4880&mi=10
- Phase of flight: [Emergency descent](https://openairdocs.org/ntsb-phases/600) (OpenAirDocs' grouping)
- Defining event: [Autorotation: Miscellaneous/other](https://openairdocs.org/ntsb-events/900)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Led by another country's authority
- Investigation class: Class 5 - No publish
- NTSB office: General Aviation Accidents
- Lead agency: Other
- Parties: UK AAIB, Rolls-Royce, MD Helicopters
- NTSB case key (mKey): 200816
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA25WA242
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/200816/pdf
- Page: https://openairdocs.org/ntsb/GAA25WA242

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Not determined](https://openairdocs.org/ntsb-findings/05000000): Not determined › Not determined · Other authority investigated (probable cause); cases with it: [MD Helicopters 600N, 1 case](https://openairdocs.org/ntsb-findings/05000000/cases.md?model=3030003), [All aircraft, 2,247 cases](https://openairdocs.org/ntsb-findings/05000000/cases.md)

## Sequence of events

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

- [Autorotation: Miscellaneous/other](https://openairdocs.org/ntsb-events/900) (defining event); cases with it: [MD Helicopters 600N, 1 case](https://openairdocs.org/ntsb-events/900/sequence.md?model=3030003), [All aircraft, 1,556 cases](https://openairdocs.org/ntsb-events/900/sequence.md)

## Aircraft

- Registration: [N600MW](https://openairdocs.org/aircraft/N600MW), registered now, S/N RN064, built 2001 (OpenAirDocs)
- Reported make and model: MD HELICOPTERS INC 600N
- Registry model: [MD Helicopters 600N](https://openairdocs.org/model/md-helicopters-600n) (registry code 3030003) (OpenAirDocs)
- Registry engine: [Allison 250-C47 series](https://openairdocs.org/engine/allison-250-c47-series) (registry code 03029, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Serial number: RN064
- Year built: 2001
- Engines: Rolls-Royce M250 turbo shaft
- Damage: Substantial damage
- Operator: Rn064 Inc Owner Trustee
- Registered owner: Rn064 Inc Owner Trustee
- Departed: Kelso, OF
- Destination: EGKA, Shoreham-by-Sea, OF
- Equipment: ADS-B

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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