What was found
DURING BC-4 CHECK, GALVANIC CORROSION WAS FOUND ON BEAM Y465 BETWEEN FS 64 AND FS 66. MAINTENANCE REMOVED CORRODED BEAM Y465 FROM FS 64 TO FS 66; FABRICATED A NEW REPLACEMENT BEAM; INSTALLED REPAIR PART IAW A319 SRM 51-49-00, FIG. 1, PG 1-13.