As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN STATION 960 - 984 LT CREASE BEAM WEB FOUND CORROSION. CORROSION REMOVED IAW SRM 51-10-02 REV 113 & FOUND MATERIAL LOSS OF MORE THAN 50%. CREASE BEAM WEB FABRICATED IAW DWG 144N5140 SHT 3 REV D. CREASE BEAM R & R BY FABRICATED PART IAW DWG 144N5140 SHT 3 REV D. REPAIR CLASSIFIED AS MAJOR.