As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - DURING C-CHECK INSPECTION, THE OUTFLOW VALVES WERE FOUND TO BE REMAINING OPEN DURING THE FUNCTIONAL CHECK OF THE AIRCRAFT DITCHING SYSTEM PER ATR JIC 21-30-00 FUT 10010-001. MAINTENANCE REMOVED AND REPLACED THE ELECTROPNEUMATIC OUTFLOW VALVE PER ATR JIC 21-31-22 AND THE AIRCRAFT WAS RETURNED TO SERVICE. (M)