What was found
DURING C-03 CHECK CORROSION WAS FOUND ON UPPER AND LOWER SURFACE OF FLOORBEAM FR 66 - FR 69, Y1292. MAINTENANCE REMOVED CORRODED FLOORBEAM FROM FR 64 TO FR 69; FABRICATED A NEW REPLACEMENT FLOORBEAM; INSTALLED REPAIR PART IAW A320 SRM 51-42-11, PG. 5-20, & 39-41, SRM 51-44-11, PG. 11-12, TABLES 11 & 12, SRM 51-46-11, PG. 1, SRM 51-21-11, PG. 5-6.