What was found
DURING C AND D-CHECK ACCEPTANCE INSPECTIONS WHILE COMPLYING WITH AD 78-07-05; SB 53-131, VISUAL INSPECTION OF LEFT AND RIGHT FUSELAGE FRAMES, FOUND THE LEFT FRAME CRACKED AT FS 718. REPLACED FRAME AT FS 718 IAW SB 53-131 AND DC-9 SRM CHAPTERS 51-30-1, 51-30-2 AND 51-30-5.