What was found
DURING C-INSPECTION, FOUND THE LOWER CHANNEL ON FLOORBEAM AT FS 939 CORRODED AT NUT PLATES FROM LONGERON 18 RIGHT TO LONGERON 18 LEFT. REPLACED FLOORBEAM SUPPORT CHANNELS IAW DC-9 SRM CHAPTER 51-30-2.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING C-INSPECTION, FOUND THE LOWER CHANNEL ON FLOORBEAM AT FS 939 CORRODED AT NUT PLATES FROM LONGERON 18 RIGHT TO LONGERON 18 LEFT. REPLACED FLOORBEAM SUPPORT CHANNELS IAW DC-9 SRM CHAPTER 51-30-2.