As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
HELICOPTER USED IN LOGGING OPERATION. DURING DAILY INSPECTION, SHEET METAL CRACK ABOUT 3 INCHES IN LENGTH WAS DISCOVERED ON THE STRUCTURAL SUPPORT FOR THE LEFT FORWARD TRANSMISSION MOUNT PAD. THE CRACK IS RADIATING OUTWARD FROM A RIVET. SUSPECT CAUSE, IMPROPER RIVETING PRACTICE. KNOWLEDGE AND USE OF RIVET METHOD AND TECHNIQUE WOULD PREVENT RECURRENCE.