As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE CHECK, CORROSION WAS FOUND OUT OF LIMITS IN THE E AND E COMPARTMENT RT STA 420 RBL 60 FLOOR SUPPORT FWD OF FLOORBEAM. REMOVED CORROSION IAW B727 SRM 511006. REMOVED SUPPORT IAW SRM 513002. FABRICATED NEW FLOOR SUPPORT PER SAMPLE FROM BAC15064417. TREATED AND PRIMED IAW SRM 511002 AND MM 512002. INSTALLED IAW SRM 513002.