What was found
IAH - DURING C-CHECK INSPECTION, THE INTERCOSTAL AT 17RT BETWEEN FRAMES 35 AND 38 WAS FOUND TO BE CORRODED. MAINTENANCE REMOVED AND REPLACED THE AFFECTED PORTION OF STRINGER 17R INTERCOSTAL IAW ATR 42-320 SRM 51-25-02 AND, THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. (M)