As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY CHECK SPARS LOWER VERTICAL STABILIZER INTERNAL STRUCTURE LH SIDE UPPER AREA NEAR STA 1986 THROUGH ACCESS 361BL WAS FOUND CORROSION SPOT. REMOVED CORROSION AT SPARS LOWER VERTICAL STABILIZER INTERNAL STRUCTURE LH SIDE UPPER AREA NEAR STA 1986 ACCESS PNL 361BL, MATERIAL REMOVED 0.001. ALODINED AND PRIMED AREA IAW MD-11 SRM 51-21-01-06-0. THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.