As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION WAS FOUND ON THE FLOOR SUPPORT WEB OF MAIN DECK. SMAX=2.5"*2" STATION 986 - STATION 991 RBL 32 - RBL 44. REMOVED THE FLOORBEAM WEB IAW SRM 51-40-02 GEN REV 50. REPLACED WEB LOWER SUPPORT PN 147A8530-14, 147A5709-2, 147A5709-4 IAW SRM 51-40-02 GEN REV 50.