As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A SCHEDULED MX VISIT, WHILE PERFORMING A HORIZ STAB ROLLER INSP OF THE HORIZ STAB INBD RIB AND BRACKET ASSEMBLIES, THE LT INBD RIB WAS FOUND CRACKED. DETAILED INSP INSTRUCTIONS OF THIS AREA ARE OUTLINED IN MFG COMMUNIQUE' NR 70. THE LT AND RT RIB ASSEMBLIES WERE REPLACED.