What was found
IAH - DURING C-CHECK INSPECTION, THE FIRST OFFICER'S SEAT RIGHT HAND AFT STRUCTURE WAS FOUND CORRODED. MAINTENANCE STOP DRILLED THE CRACK AND INSTALLED REPAIR DOUBLER IAW ATR 42-320 SRM 51-25-03, AND SRM 51-70-00, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (X)