As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING SCHEDULED AIR FRAME INSPECTION, DISCOVERED A CRACK IN THE UPPER LEFT HAND TAIL BOOM ATTACH FITTING. (AIR-FRAME SIDE OF TAIL BOOM.) PERFORMED DYE PENETRATE TEST THAT CONFIRMED CRACK LOCATION BETWEEN THE TWO AFT OUTBOARD RIVET LOCATIONS.