What was found
IAH- DURING C-CHECK INSPECTION, THE LOWER PORTION OF FRAME 42 WAS FOUND CORRODED. MAINTENANCE PERFORMED A DOUBLER REPAIR IAW ATR 42-320 SRM 51-21-42 AND SRM 51-70-00, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. AIRCRAFT TT: 22,917.4 HOURS. CYCLES: 24,865. (X)