Primary finding
Probable cause
An in-flight collision with a bird in the airport traffic pattern.
Investigator assessment
Analysis narrative
The pilot reported that while during a crosswind turn in the airport traffic pattern, about 2,000 ft mean sea level, a bird struck the airplane. Postaccident examination of the airplane revealed substantial damage to the left wing. The pilot reported no preaccident mechanical malfunctions or failures that would have precluded normal operation.