Primary finding
Probable cause
The pilot's failure to maintain clearance from power lines during low-level flight.
Investigator assessment
Analysis narrative
The pilot reported that, during low-level flight, the airplane struck a power distribution line. Subsequently, the top section of the vertical stabilizer and rudder separated and sustained substantial damage. The pilot landed at a nearby airfield without further incident. The pilot reported that there were no preaccident mechanical malfunctions of failures with the airplane that would have precluded normal operation.