What was found
DURING C4 CHECK. CABIN FLOOR SUPPORT CORRODED BETWEEN BS 1660 AND 1680 AT RBL 9.5. R & R FLOOR SUPPORT IAW SRM 51-30-01 & 51-40-02 AND DWG 146N5191.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
DURING C4 CHECK. CABIN FLOOR SUPPORT CORRODED BETWEEN BS 1660 AND 1680 AT RBL 9.5. R & R FLOOR SUPPORT IAW SRM 51-30-01 & 51-40-02 AND DWG 146N5191.