As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON APPROACH, ROTOR TIP IMPACTED FLAG & FLAG HOLDER MOUNTED ON INDUSTRIAL CRANE. CREW FELT MINOR LOW FREQUENCY VIBRATION. PILOT LANDED ACFT IMMEDIATELY. ON PRELIMINARY INSPECTION, MINOR DAMAGE TO ONE MAIN ROTOR BLADE END CAP WAS DISCOVERED. PILOT NOTED NO LOSS OF NR, NOISE IMPACT, OR ANY CHANGE IN INDICATIONS, ASIDE FROM THE SLIGHT LOW-FREQUENCY ROTOR VIBRATION.