What was found
WHILE IN FOR C-CHECK, MAINTENANCE REPORTED 'A' CSD FWD DOUBLER HAS CORROSION AT FS 220 TO 260 LONGERONS 30R TO 35L. REPLACED DOUBLER PER SRM 51-1-20D AND 51-1-21.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
WHILE IN FOR C-CHECK, MAINTENANCE REPORTED 'A' CSD FWD DOUBLER HAS CORROSION AT FS 220 TO 260 LONGERONS 30R TO 35L. REPLACED DOUBLER PER SRM 51-1-20D AND 51-1-21.