What was found
AT C-CHECK, CORROSION ON CABIN FLOORBEAM 804 LEFT O/B END ATTACH TO WING CENTER SECTION. REMOVED DAMAGED LOWER CHORD FROM FLOORBEAM, INSTALLED ANGLE AND STRAP REPAIR PER AVITAS EO DRAWING 97PMSI152D-5. REPAIR 6 BY 3 AND .75 BY 6 (STRAP).