As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING AIRCRAFT C5 CHECK, MAINTENANCE DISCOVERED RT HORZ STAB UPPER SKIN HAS EVIDENCE OF CORROSION, 24 INCHES AFT OF THE LEADING EDGE AT AUX SPAR HSS 365 JM-1 CORROSION DAMAGE ON THE UPPER SKIN PANEL OF THE RIGHT-HAND HORIZONTAL STABILIZER AT FRONT SPAR STATION HSS 280.708. THE CORROSION WAS BLENDED IAW SRM AND FOUND TO BE OUT OF LIMITS.REPAIRED IAW ABX-REA-5510-66186-00.