Approach and Landing
The airplane completed an NDB approach to Runway 02. According to the pilot, after arriving at the airport, he circled the runway twice to check its condition. He subsequently landed on Runway 20.
Post-Landing Events
During the landing roll, the pilot reported that he 'impacted something on runway or hit air pocket, did not know.' He then 'added power to maintain control of (aircraft).' From that point onward, the pilot was unable to remember the remaining events.
Witness Observation
A witness reported seeing the aircraft descend nose-down almost vertically from less than 100 feet above ground level (AGL), and subsequently impact the ground. The point of impact was approximately 2,000 feet from the departure end of Runway 20.
Investigation
The accident investigation did not state a probable cause. No further details about the aircraft, occupants, or injuries were provided in the source.