What was found
IAH - DURING C-CHECK INSPECTION, THE RIGHT HAND CREASE BEAM Z-CHANNEL WAS FOUND CORRODED FROM FRAMES 40 TO 41. MAINTENANCE REMOVED AND REPLACED THE AFFECTED Z-CHANNEL IAW ATR42-320 SRM 51-25-02, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. ACFT TT: 19,271.5 HOURS. CYCLES: 22,334. (X)