What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK GALVANIC CORROSION WAS FOUND ON FLOORBEAM Y1292 LT BETWEEN FR 68 AND FR 69. MAINTENANCE REMOVED CORRODED FLOORBEAM Y1292 LT FROM FR 68 TO FR 69; FABRICATED A NEW REPLACEMENT FLOORBEAM; INSTALLED REPAIR PART IAW A320 SRM 51-42-11, FIG 10-12, PG 24, & 26- 28.