As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING ROUTINE PERIODIC INSPECTION A VISIBLE CRACK IN THE PAINT AROUND A COUNTERSUNK RIVET ON THE TAIL BOOM CONE TO FENESTRON RING JUNCTION WAS NOTED. FOLLOWING THE STRIPPING OF THE PAINT AND THE COMPLETION OF A DYE PENETRANT INSPECTION IT WAS DETERMINED THAT THE MOUNTING FLANGE FOR THE FENESTRON ATTACHMENT HAD A 1.5 INCH CRACK CENTERED THROUGH THE COUNTERSUNK RIVET BORE AT THE LOCATION OF THE CRACKED PAINT. THIS DEFECT HAS NO APPROVED FIELD REPAIR AND A REPLACEMENT TAILBOOM HAS BEEN ORDERED.