What happened
During the arrival phase of flight, the pilot noticed that an aircraft was immobilized in the mud on runway 28. Following a brief radio exchange with the pilot of the stuck aircraft, the decision was made to utilize the opposite runway for landing. Just prior to touchdown, the pilot noted that the airspeed was lower than normal and that the impact was harder than usual. As the landing roll commenced, the left gear sank into the mud and collapsed.
The investigation
The accident resulted in damage to the left flap, both propellers, the right wing spar, and the right nacelle. The airport elevation was recorded at 5286 feet. There was no record of a NOTAM concerning the runway condition.