What was found
DURING ROUTINE C-CHECK INSP FOUND MAIN CARGO COMPARTMENT FRAME FLANGE CRACKED AT STA 1580.000 LONGERON20-21 RT. REMOVED FASTENERS AS NEEDED TO PERFORM REPAIR. REMOVED DAMAGED FRAME. FABRICATED FRAME SEGMENT. PERFORMED HEAT TREATMENT. CLEANED,TREATED, AND PRIMED AREA AND REPAIR PARTS. INSTALLED NEW FASTENERS AND REPAIR PARTS IAW SRM CHAP 53-2-0 FIG 2, SRM 53-2-0, SRM 51-1-21, SRM 51-1-20D, SRM 53-2-0 FIG 2, SRM 51-1-1, SRM 51-1-8B, SRM 53-2-0 FIG 2, SRM 51-1-20D, AND SRM 51-3-1.