As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAILBOOM ATTACH FRAME, PN 407-030-027-101 WAS REPLACED BY UNITED ROTORCRAFT DUE TO CRACKING. A CRACK WAS DISCOVERED IN FRAME INSTALLATION ANGLE, PN 206-032-308-107 IN THE APEX OF THE BEND WHERE IT ATTACHES TO ABOVE MENTIONED TAILBOOM ATTACH FRAME. CRACKS IN THIS AREA (TAILBOOM ATTACH) ARE COMMON AMONG THESE ACFT.