What was found
DURING C-CHECK DISCREPANCY AS FOLLOWS, A/C BAY AT BS 720 HAS CORROSION AT BOTH LT AND RT SIDE OF RAM AIR DOOR ATTACH FRAME. CORROSION FOUND OUT OF LIMITS IAW B-727 SRM 53-10-1 FIG 1. REMOVED SKIN FOR ACCESS IAW B-727 SRM 51-30-2 AND CUT OUT 2 EACH DAMAGED AREAS DIM 3 INCHES EACH AND FABBED FILLERS FROM BAC 1490-2785 PO 9912243 DIM 3 INCHES EACH AND ANGLE DOUBLERS FROM 7075 T6 .050 PO 9912146 DIM 13 X 3 INCHES EACH IAW B-727 SRM 51-40-3 FIG 1 AND 53-50-1 FIG 2. PARTS TREATED AND PRIMED IAW B-727 SRM 51-10-2. INSTALLED IAW B-727 SRM 51-40-3 FIG 1. SKIN REINSTALLED IAW B-727 SRM 51-30-2.