What happened
During a flight conducted under Visual Flight Rules (VFR), the pilot encountered significant meteorological challenges, including heavy rain, turbulence, and thunderstorm activity. While navigating through these adverse conditions at cruising altitude, the aircraft experienced a loss of control that resulted in an uncontrolled dive. During this descent, the plane suffered a structural failure while flying inverted. The aircraft ultimately impacted the water in the vicinity of Walnut Grove.
All six fatalities were recorded following the impact. Records indicate that Flight Service Station (FSS) personnel had previously advised against continuing the flight under VFR conditions due to the deteriorating weather.
Findings
Investigations into the accident identified several contributing elements to the crash. The primary factor was the pilot's decision to proceed with VFR operations despite the presence of severe weather, which led to a loss of control and an uncontrolled descent.
Additional findings include:
- Spatial disorientation experienced by the pilot
- In-flight structural failure and overload failure
- Severe turbulence and thunderstorm activity
- Heavy rain
- Separation in flight