# NTSB GAA25WA260: Aerospool WT9 Dynamic LSA, Orbe, Switzerland, August 16, 2025

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Class 4 · Foreign
- Date: August 16, 2025, 12:56 local (12:56 UTC)
- Place: Orbe, Switzerland
- Coordinates: 46.745069, 6.545072
- Nearby events: https://openairdocs.org/map.md?lat=46.7451&lon=6.5451&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Defining event: [Enroute-cruise: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Led by another country's authority
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: General Aviation Accidents
- Lead agency: Other
- Parties: STSB, Swiss TSB
- NTSB case key (mKey): 201049
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=GAA25WA260
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/201049/pdf
- Page: https://openairdocs.org/ntsb/GAA25WA260

## 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: [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.

- [Enroute-cruise: Collision with terr/obj (non-CFIT) ](https://openairdocs.org/ntsb-events/470) (defining event); cases with it: [All aircraft, 10,189 cases](https://openairdocs.org/ntsb-events/470/sequence.md)

## Aircraft

- Registration: HB-WZN (not matched to a registry record)
- Reported make and model: AEROSPOOL WT9 DYNAMIC LSA
- Category: Airplane
- Engines: Rotax 912 ULS2 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Non-U.S., non-commercial
- Airport: LSGY

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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