As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK MAINTENANCE FOUND LT HORIZONTAL STAB RIB 12 UPPER FLANGE CRACKED AT FASTENER HOLE JUST FORWARD OF STR 02L. REMOVED AND REPLACED RIB 12 PN-170-62642-601 AT LT STAB FWD SIDE IAW SRM 51-40-08. A/C REMAINS IN HEAVY CHECK.