As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MAIN AVIONICS BAY CRAWLWAY FLOOR SUPPORT CORRODED AT AFT SIDE OF BS 280 LOWER FRAME. EVALUATED DAMAGE FOUND TO BE OUT OF LIMITS IAW SRM 53-00-00-101-001-A01. R & R THE FLOOR SUPPORT IAW SRM 51-42-06-001-001-A01, 51-42-13-001-001, 51-42-21-001-001-A01.