What was found
DURING C-04 CHECK GALVANIC CORROSION WAS FOUND ON UPPER SURFACE OF LOWER R-2 DOORWAY SHAPE SILL BS 2280, STR 23 RT. MAINTENANCE REMOVED CORRODED SHAPE SILL AT BS 2280, STR 23 RT; FABRICATED A REPLACEMENT SHAPE SILL; INSTALLED REPAIR PART IAW A319 SRM 51-42-11, PG. 7-20, TABLE 1-10, FIG. 2-7.