As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN CABIN STIFFENER RBL 16 BETWEEN FLOORBEAM 947.5 & 967.5 IS CORRODED AT FASTENER HOLE. GROUNDED - YES. REMOVED CORROSION ORIG. .075 REMAIN .066 LOSS OF .009. FOUND OUT OF LIMITS IAW SRM 53-705. REMOVED AND REPLACED STIFFENER IAW BAC DWG 147A5650.