As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A-CHECK INSPECTION AT SHARP TK LOCATED IN RKSI, A CRACK INDICATION WAS DETECTED AT THE INBOARD UPPER HOLE OF THE HORIZONTAL STABILIZER REAR SPAR UPPER CHORD AT RBL 43.5 BY OPEN-HOLE HFEC. OVERSIZED HOLE AND FREEZE PLUG INSTALLATION PERFORMED IAW BOEING COMMUNICATION SYSTEM MUA-MUA-25-0076-06B.