Primary finding
Probable cause
The pilot’s encounter with wake turbulence, which resulted in substantial damage to the airplane.
Investigator assessment
Analysis narrative
The pilot reported he was inbound to land and was waiting for a break in chatter on the radio to contact the air traffic control tower. He was about 7 miles from the airport, and about 1,050 ft mean sea level when he encountered wake turbulence presumably from a Boeing 747 inbound to an adjacent runway. He stated the airplane violently dropped and he struck his head on the ceiling. He was able to maintain control of the airplane and land uneventfully. The airplane sustained substantial damage to the right wing. The pilot reported there were no mechanical malfunctions or anomalies with the airplane that would have precluded normal operation.