As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING C-CHECK, CORROSION BEYOND LIMITS WAS FOUND ON THE LT SIDE FLOOR SUPPORT BETWEEN FRAMES 39 AND 40. OUT OF LIMITS CORROSION WAS ALSO FOUND ON THE RT SIDE FLOOR SUPPORT BETWEEN FRAMES 39 AND 41. MAINTENANCE REMOVED AND REPLACED THE CORRODED Z-SUPPORTS ON THE LT AND RT SIDES IAW SRM 512502 AND 512501 RESPECTIVELY. AIRCRAFT WAS RELEASED FROM C-CHECK MAY 14, 2004.