As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY CHECK MAINTENANCE FOUND MULTIPLE SKIN DAMAGE/DENTS AFT OF REAR CARGO DOOR FRS 81-83 STRG 23R TO 26R. MAINTENANCE PERFORMED MAJOR REPAIR, REMOVED DAMAGE AND INSTALLED DOUBLER REPAIR PER ETD 2011-170/05521 REV B. A/C IS CURRENTLY OUT OF SERVICE FOR HEAVY CHECK.