As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING A HEAVY MAINT CHECK, EXFOILIATION WAS FOUND PRESENT AT STA 720C STR 28R AT BOTTOM OF RIB UNDER LEVELING COMPOUND. REMOVED DAMAGED AREA IAW B727 SRM 513002 AND 531004 FIGURE 13. FABRICATED NEW DOUBLER OUT OF 7075 T6 .071 IAW B727 SRM 531004. TREATED AND PRIMED IAW B727 SRM 511002 AND MM 512002. INSTALLED IAW B727 SRM 513002.