What happened
During an instrument approach, the pilot of the unspecified aircraft initiated a go-around after observing a snowplow enter runway 09. The pilot reported making two position reports via the UNICOM frequency: the first at 30 miles (or 15 minutes) from the airport, and a second between 1 and 1.5 miles during the final approach. However, the driver of the snowplow stated they only heard the initial 15-minute report and did not hear the second transmission until the aircraft was flying directly overhead.
Following the go-around, the pilot attempted to land on the runway numbers. During this maneuver, the pilot noted that the airplane "mushed" when power was reduced. The aircraft ultimately landed 15 feet short of the runway threshold. At the time of the incident, a notice to airmen indicated that braking action was poor due to 0.25 inches of snow.
Findings
The investigation noted that the pilot had the trailing edge flaps retracted during the landing attempt. Additionally, while the windshield deice system was functioning while en route, it was not operational during the approach. As a result, approximately one-half of the windshield was contaminated by ice.