What was found
MCN - MAJOR REPAIR - DURING C-04 CHECK GALVANIC CORROSION WAS FOUND ON FORWARD CARGO DOOR SILL WEB BETWEEN FR 24A AND FR 28, STR 39 RT. MAINTENANCE REMOVED DAMAGED FORWARD CARGO DOOR SILL WEB FROM FR 24A TO FR 28, AT STR 39 RT; FABRICATED A NEW REPLACEMENT WEB; INSTALLED REPAIR PART IAW A320 51-42-11 FIG 2-3, 8-9 & 12.