What was found
UPON REMOVAL OF SEAT TRACK, FOUND PITTING CORROSION ON FLOORBEAM MATING SURFACE AT FLOORBEAM 23, FABRICATED REPLACEMENT FLOORBEAM SEGMENT FROM NTA 44770 7075-T-6511, PO 2059P. INSTALLED NEW FLOORBEAM & REPAIR SPLICES IAW SRM 53-00-00 435, REV 77.