As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLOOR BEAM AT RBL 15 AND FR59-FR61 HAS SIGNS OF CORROSION AT 2 OFF NUTPLATE LOCATIONS WHERE MATING GUSSET PLATE ATTACHES.CORRECTIVE ACTION IS TO CUTOUT DAMAGE IN 2 PLACES MANUFACTURED FILLER AND FORMED DOUBLER IAW EMB 135/145 SRM 53-24-10 FIG 202. AVMAX WO81031 WC 1233.