As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE IN HEAVY MAINTENANCE IT WAS NOTED THAT THE FLOORBEAM AT BS 277 BL 14L HAS CORROSION. CUT OUT DAMAGED AREA 13 INCH. FABRICATED REPAIR CHORD FROM BAC 1505-39042 7075 T65N DIM 13 INCH AND FILLER FROM 7075 T6 .050 INCH DIM 6.125 INCH BY 9.00 INCH. INSTALLED REPAIR. NO OTHER DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.