What was found
AIRCRAFT WOULD NOT PRESSURIZE IN FLIGHT. THE AIRCRAFT RETURNED TO MYR WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND THE AFT PRESSURE BULKHEAD DOOR NOT SEALING. MAINTENANCE REMOVED THE AFT PRESSURE BULKHEAD DOOR AND CLEANED THE SEAL. MAINTENANCE REINSTALLED THE AFT PRESSURE BULKHEAD DOOR AND PRESSURIZED THE AIRCRAFT. NO DEFECTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE. (M)