What was found
DURING C4 CHECK, CABIN FLOOR SUPPORT CORRODED BETWEEN BS 680 AND 700 LBL 56. FABRICATED AND INSTALLED REPLACEMENT FLOOR SUPPORT IAW SRM 51-10-02 & 53-00-51-1A AND DWG 143N540.
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 680 AND 700 LBL 56. FABRICATED AND INSTALLED REPLACEMENT FLOOR SUPPORT IAW SRM 51-10-02 & 53-00-51-1A AND DWG 143N540.