What happened
A solo commercial pilot was conducting a cross-country cargo flight under visual flight rules (VFR) when the aircraft encountered challenging environmental conditions. While flying over a large, featureless, snow-covered lagoon, the pilot encountered flat light conditions. These conditions made it difficult to identify any topographical features of the terrain.
During this period, the pilot did not realize that the aircraft had entered a descent. The aircraft subsequently struck the surface of the snow-covered lagoon. The impact resulted in substantial damage to the wings and the fuselage. The pilot was not injured in the accident.
The investigation
The pilot reported that there were no mechanical anomalies with the aircraft prior to the accident. Weather observations at the time of the event included an overcast ceiling of 1,200 feet and visibility of 9 statute miles.