What was found
DURING ROUTINE C CHECK INSPECTION, FWD LOWER FUSELAGE BELLY, STA FS 173.000 L-35.5R. UPGRADE EXTERNAL REPAIR DOUBLER TO INCORPORATE A MINIMUM OF 3 ROWS OF RIVETS. PERFORMED MAJOR REPAIR, REMOVED EXISTING REPAIR DOUBLER IAW SRM 51-1-21. REMOVED DAMAGED SECTION IAW DWG NR ED-4059. NDT INSPECTED REWORKED AREA IAW NDT SPM. NEITHER CRACK NOR CORROSION FOUND. FABRICATED REPAIR DOUBLER (AL7075T6 0.063) INTERNAL FINGER DOUBLER (AL7075T6 0.032) IAW DWG NR ED-4059, SRM 51-1-4 PG 1 (FORMING). CLEANED, TREATED, PRIMED AREA AND REPAIR PARTS IAW SRM 51-1-8B. APPLIED SEALANT TO FAYING SURFACES IAW SRM. INSTALLED REPAIR PARTS IAW SRM.