As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LEVEL II CORROSION WAS FOUND AT LOWER STRINGER 2, STATION 285 OF LT HORIZONTAL STAB STRUCTURE DURING D-CHECK. TRIMMED OUT THE CORRODED STRINGER AND FABRICATED A PORTION OF NEW STRINGER IAW DWG 65B03555. INSTALLED THE NEW STRINGER WITH REPAIR ANGLE AND FASTENER IAW SRM 55-10-03, REPAIR 2. THE REPAIR IS CATEGORY B REPAIR.