# Accident 20250217001759A: Quicksilver Aeronautics LLC L-S2S, Geyersville, CA, February 17, 2025

- Type: FAA accident report (Accident/Incident Data System), as reported
- Date: February 17, 2025, 13:20 local time
- Place: Geyersville, CA
- Airport: Cloverdale Municipal
- Damage: Substantial damage
- Phase of flight: Unknown
- Operating rules: General operating rules (Part 91)
- Location: 38.7178° N, 122.8871° W: From the FAA
- Nearby events: https://openairdocs.org/map.md?lat=38.7178&lon=-122.8871&mi=10
- Aircraft: N14QK, registered now (https://openairdocs.org/aircraft/N14QK) (OpenAirDocs)
- Registry model: Quicksilver Aeronautics L-S2S (registry code 0600096, https://openairdocs.org/model/quicksilver-aeronautics-l-s2s) (OpenAirDocs)
- Registry engine: Rotax 582UL (registry code 55558, https://openairdocs.org/engine/rotax-582ul) (OpenAirDocs)
- Reported make and model: QUICKSILVER AERONAUTICS LLC L-S2S
- Reported engine: ROTAX 582UL
- People aboard: 2
- Fatal injuries: 0
- Other injuries: 0
- Pilot certificates: Flight instructor, private pilot
- NTSB investigation: [NTSB WPR25LA095](https://openairdocs.org/ntsb/WPR25LA095) (OpenAirDocs)
- FAA source: FAA Aviation Safety Information Portal (https://asip.faa.gov/)
- Page: https://openairdocs.org/incident/20250217001759A

## Narrative

As the FAA filed it, in capitals; the FAA replaces private details with ^PRIVACY DATA OMITTED^.

PILOT ATTESTED TO REMOVING RADIATOR CAP TO TOP OFF COOLANT AND FAILING TO REPLACE CAP PRIOR TO TAKEOFF. ENGINE OVERHEATED AND PILOT MADE EMERGENCY LANDING ON PUBLIC ROAD. UPON LANDING, AIRCRAFT VEERED OFF ROAD AND SUFFERED SUBSTANTIAL DAMAGE.

## The NTSB's investigation of this event (1)

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.

- [NTSB WPR25LA095](https://openairdocs.org/ntsb/WPR25LA095), Feb 17, 2025: Quicksilver Aeronautics L-S2S (N14QK), Geyserville, CA, substantial damage. Probable cause: The pilot’s failure to secure the coolant cap during the preflight inspection, which resulted in a total loss of engine power due to overheating and a subsequent forced landing.

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. For accidents, the NTSB's own investigation is the fuller record.

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