What was found
FORWARD FUSELAGE FLOOR STRUCTURE, RT OTBD SEAT TRACK CORROSION NOTED AT THE FORWARD END, RBL 43.5, FR 20. REMOVED DAMAGED SEAT TRACK AND INSTALLED NEW REPLACEMENT SEAT TRACK, , IAW ASRP BD500-A-J51-42-20-00AAA-078A-A & DWG C02312600, REV K. (LP# 1794437; AIRCRAFT WAS GROUNDED)