What happened
During a nighttime approach into Sonoma-Skypark, a twin engine airplane experienced an aerodynamic stall that resulted in a fatal crash. The flight was being conducted under challenging meteorological conditions characterized by low cloud ceilings and visibility restricted to 2 miles or less.
An observer located at the airport reported hearing the aircraft flying at a low altitude over a hangar while executing a turn toward the south. According to the witness, there was a noticeable surge in engine power followed by immediate silence before the impact occurred.
The accident resulted in two fatalities, as both occupants on board were killed in the crash.
Findings
Investigations into the accident identified that the aircraft entered a stall while the pilot was performing circling maneuvers within the traffic pattern. This loss of control was primarily due to the failure to maintain sufficient airspeed during the maneuver.
Several contributing factors were noted by investigators, including:
- The flight was attempted under conditions exceeding the pilot's level of experience and ability
- A lack of appropriate judgment regarding the operational environment
- Low cloud ceilings that complicated the approach