As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CORROSION ON CUSP WEB RUNNING UNDER FRAME AND PYLON BULKHEAD ATTACH FITTING AT STA 1309 LONGERON 18R NEAR TO RBL 56 AT THE FLOOR AFT CABIN AREA RIGHT SIDE. FOUND TO BE OUT OF LIMITS FABRICATED AND INSTALLED SPLICE RING REPAIR AND CUSP WEB REPAIR PER MR80 SRM 53-05 FIG131A SH1. A