Primary finding
Probable cause
The pilot's failure to maintain clearance from a power line during low-level maneuvering.
Investigator assessment
Analysis narrative
The uncertificated pilot departed from a grass field and flew the gyroplane at low altitude over a pipeline right-of-way. The gyroplane struck a power line that the pilot did not see and impacted the ground, which resulted in substantial damage to the rotor. The pilot reported that there were no mechanical malfunctions or failures that would have precluded normal operation, and that he should not have flown at low altitude without an observation pass of the area.