What was found
DURING A HEAVY MAINTENANCE CHECK, FOUND CORROSION IN FWD CABIN OTBD OF RT FLOORBEAM AT FRAME 17, RBL 25-33. REMOVED CORROSION ON THE FLOORBEAM IAW SRM 51-12-01 AND 51-10-03. CUTOUT THE AFFECTED AREAS AND INSTALLED FILLER USING LEFT ANGLE SUPPORT IAW EA 15-226-01.