Incident Overview
During en route operations, the flight encountered light icing conditions that subsequently intensified to moderate icing. In response, the pilot diverted the aircraft to Marysville.
Approach and Landing Attempts
Upon arrival, the pilot executed a Non-Directional Beacon (NDB) approach. After breaking out of clouds at approximately 2,000 feet above ground level (AGL), the pilot made two landing attempts. During these attempts, ice remained on the windshield and airframe.
Stall and Tree Strike
Following the second landing attempt, after entering the downwind leg, the airplane stalled. During the recovery maneuver, the airplane struck a tree, resulting in the separation of the outer one-third of the left wing.
Conclusion
The investigation documented the sequence of events but did not explicitly state a probable cause for the incident.