# NTSB WPR27FA012: Gugger David RV-7A, N425DG, Petaluma, CA, October 7, 2026

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Class 3 · Field · Investigation open
- Date: October 7, 2026, 10:45 local (17:45 UTC)
- Place: Petaluma, CA
- Location: 38.2420° N, 122.6286° W: Placed by OpenAirDocs: center of Petaluma, CA, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.2420&lon=-122.6286&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Defining event: [Initial climb: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241)
- Highest injury: Fatal
- Injuries: 2 fatal
- Status: Investigation ongoing
- Investigation class: Class 3
- NTSB office: Western Pacific Region
- NTSB case key (mKey): 203963
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=WPR27FA012
- Latest NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/203963/pdf
- Page: https://openairdocs.org/ntsb/WPR27FA012

## Sequence of events

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

- [Initial climb: Aerodynamic stall/spin](https://openairdocs.org/ntsb-events/241) (defining event); cases with it: [Gugger David RV-7A, 1 case](https://openairdocs.org/ntsb-events/241/sequence.md?model=05623P5), [All aircraft, 1,529 cases](https://openairdocs.org/ntsb-events/241/sequence.md)

## Aircraft

- Registration: [N425DG](https://openairdocs.org/aircraft/N425DG), registered now, S/N 71782, built 2007 (OpenAirDocs)
- Reported make and model: GUGGER DAVID RV-7A
- Registry model: [Gugger David RV-7A](https://openairdocs.org/model/gugger-david-rv-7a) (registry code 05623P5) (OpenAirDocs)
- Registry engine: [Amateur-built UNKNOWN ENG](https://openairdocs.org/engine/amateur-built-unknown-eng) (registry code 99999) (OpenAirDocs)
- Flight: Part 91

## Weather

- Conditions: Visual (VMC), Day
- Wind: calm
- Lowest ceiling: none
- Observed at: 1 nm away

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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