What was found
IAH - DURING C-CHECK INSPECTION, THE WEB AT THE PASSENGER DOOR THRESHOLD FROM FRAMES 36-39 WAS FOUND CORRODED. MAINTENANCE REMOVED AND REPLACED THE AFFECTED WEB 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)