Primary finding
Probable cause
The pilot's failure to maintain clearance from an electrical box.
Investigator assessment
Analysis narrative
A company representative reported that the airplane impacted an unknown object during an aerial application flight. After landing, substantial damage to the left wing was discovered. Following a brief search, a damaged electrical box was found dislodged from its base with yellow paint on one side that was consistent with the color of the airplane's left wing. The operator reported that there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The pilot did not supply a statement regarding the collision or the circumstances.