N471PS

Part: BLEED VALVE — MALFUNCTIONED (RT ENGINE) · airframe 17,980 hrs · 21,976 cycles

DURING TAKEOFF, THE CREW EXPERIENCED A TORQUE JUMP AND ABORTED TAKEOFF. MAINTENANCE INSPECTED AND REPLACED THE RIGHT HAND INTERCOMP BLEED VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 75-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: CONTROL PANEL — FAULTY (COCKPIT) · airframe 17,908 hrs · 21,913 cycles

THE CREW REPORTED THAT THE CARGO FIRE TEST WAS INOP AND THE CREW DEFERRED THIS WITH MAINTENANCE CONTROL USING 26-6C. WHEN THE AIRCRAFT ARRIVED IN PIT, MAINTENANCE INSPECTED AND REPLACED THE FIRE DETECTION PANEL IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 26-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: CONTROL VALVE — FAILED (CABIN TEMP) · airframe 17,458 hrs · 21,530 cycles

EN ROUTE TO BNA, THE CAPTAIN REPORTED THAT THE TEMPERATURE WAS RISING IN THE CABIN AND FLIGHT 4094 WAS DIVERTING TO PIT. MAINTENANCE INSPECTED AND REPLACED THE LEFT HAND TEMPERATURE CONTROL VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 21-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: FUEL FILTER (RH HP) · airframe 17,434 hrs · 21,512 cycles

ENROUTE, THE CREW RECEIVED A RIGHT HAND ENGINE HIGH PRESSURE BYPASS CAS MESSAGE. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND CONTACTED MAINTENANCE CONTROL. THE CREW WAS THEN INSTRUCTED TO RETURN TO DAY. MAINTENANCE INSPECTED AND REPLACED THE RIGHT HAND HIGH PRESSURE FUEL FILTER IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 28-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: VALVE — FAILED (FUEL SYSTEM) · airframe 17,371 hrs · 21,460 cycles

EN ROUTE, THE CREW RECEIVED A FEEDER TANK LOW CAS MESSAGE AND DECIDED TO RETURN TO DAY. MAINTENANCE INSPECTED AND REPLACED THE MOTIVE FLOW NON RETURN VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 28-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: POWER SUPPLY — FAILED · airframe 17,075 hrs · 21,230 cycles

THE CREW REPORTED THAT THE EMERGENCY POWER SUPPLY WOULD NOT TEST. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY POWER SUPPLY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: SENSOR — DIRTY (EMERGENCY EXIT) · airframe 16,843 hrs · 21,045 cycles

IMMEDIATELY FOLLOWING TURBULENCE, THE CREW SEEN THE 9A EMERGENCY DOOR LIGHT FLASH ON THE RED WARNING PANEL. MAINTENANCE INSPECTED AND CLEANED THE EMERGENCY DOOR TARGET AND PROXI SENSOR IN ACCORDANCE WITH 52-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: PANEL — MALFUNCTIONED (RT WING) · airframe 16,760 hrs · 20,968 cycles

FLIGHT 9405 RETURNED TO THE FIELD AFTER THE AIRCRAFT BEHIND THEM REPORTED SOMETHING FELL OFF THE AIRCRAFT. THE CREW ALSO RECEIVED A FEEDER TANK LOW CAS MESSAGE. MAINTENANCE INSPECTED AND FOUND THAT A SMALL BIRD HAD STRUCK THE VERTICAL STABILIZER. MAINTENANCE THEN INSPECTED AND REPLACED THE RIGHT HAND REFUELING BOX IN ACCORDANCE WITH 28-00-00. OPERATIONAL CHECKS AND A FUNCTIONAL CHECK FLIGHT WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: SHIM · airframe 16,720 hrs · 20,930 cycles

AFTER LANDING IN CAK, THE NOSE GEAR AND MAIN GEAR INDICATION WAS NORMAL AND GREEN. HOWEVER, THE GEAR HANDLE WAS FLASHING AND THE AURAL HORN WAS HEARD. MAINTENANCE INSPECTED AND FOUND THE DOWN LOCK PROXI SENSOR TO BE OUT OF GAP .030 ON THE BACK SIDE. THE AIRCRAFT WAS THEN FERRIED TO DAY. MAINTENANCE THEN INSPECTED AND REPLACED THE SHIMS IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: WINDSHIELD — FAILED (LH) · airframe 16,392 hrs · 20,658 cycles

WHILE CLIMBING OUT OF PIT, THE CREW RECEIVED A LEFT HAND FORWARD WINDSHIELD HEAT FAIL. THE CREW CALLED MAINTENANCE CONTROL AND RETURNED TO PIT. MAINTENANCE INSPECTED AND REPLACED THE LEFT HAND FORWARD WINDSHIELD IN ACCORDANCE WITH 56-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: HYDRAULIC LINE — LEAKING (HYD SYSTEM) · airframe 16,153 hrs · 20,466 cycles

IMMEDIATELY AFTER LEVEL OFF AT 10,000 FT, RECEIVED A HYD PRIORITY VALVE FAIL AND MAIN HYD QUANTITY LOW CAS MESSAGES. THE CREW FOLLOWED THE QRH AND PLANNED A LANDING AT PHL. THEN RECEIVED A STANDBY HYD SYSTEM FAIL AND A MAIN HYD QUANTITY FAIL CAS MESSAGES. THE QRH INSTRUCTED THE CREW TO LAND AT THE NEAREST AIRPORT. THE CREW DECLARED AN EMERGENCY, HAND PUMPED THE GEAR DOWN, AND LANDED AT ABE WITH NO FURTHER INCIDENTS. MAINTENANCE INSPECTED AND FOUND THE AC HYD MOTOR PRESSURE LINE HAD DEVELOPED A HOLE. MAINTENANCE REPLACED THE PRESSURE LINE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 29-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: CONTROL BOX — FAULTY (ELECTRICAL SYS) · airframe 15,944 hrs · 20,293 cycles

THE FLIGHT CREW ABORTED THE TAKEOFF AFTER RECEIVING A LEFT ALTERNATOR FAIL AND LEFT AC VOLT FAIL WARNING MESSAGE. AFTER EXITING THE RUNWAY AND CYCLING THE CONDITION LEVER THE MESSAGES CLEARED. THE FLIGHT CREW ATTEMPTED ANOTHER TAKEOFF AND THE MESSAGES RETURNED. THE TAKEOFF WAS ABORTED AND THE FLIGHT CREW RETURNED TO THE GATE. MAINTENANCE TROUBLESHOT THE AIRCRAFT AND REPLACED THE AC JUNCTION BOX IN ACCORDANCE WITH THE MAINTENANCE MANUAL 24-50-00. OPERATIONAL CHECKS WERE COMPLETED AND THE AIRCRAFT RETURNED TO SERVICE.

Part: WIRE HARNESS — SHORTED (ELECTRICAL SYS) · airframe 15,945 hrs · 20,294 cycles

THE FLIGHT CREW ABORTED THE TAKEOFF AFTER RECEIVING A LEFT ALTERNATOR AND LEFT AC VOLTAGE FAIL WARNING MESSAGE. THE FLIGHT CREW RETURNED TO THE GATE WHERE MAINTENANCE INSPECTED AND FERRIED THE AIRCRAFT TO CAK AND THEN DAY FOR FURTHER MAINTENANCE INVESTIGATION. THE WIRING HARNESS WAS FOUND TO HAVE AN INTERNAL SHORT AND MAINTENANCE REPAIRED THE WIRE HARNESS IN ACCORDANCE WITH DORNIER SPECIAL PROBLEM REPORT A19753. OPERATIONAL CHECKS WERE COMPLETED AND THE AIRCRAFT RELEASED FOR SERVICE.

Part: DAU — FAILED (COCKPIT) · airframe 15,890 hrs · 20,242 cycles

AFTER DEPARTING PIT PASSING THROUGH 7000 FEET, THE CAPTAIN REACHED UP TO TURN ON THE ICE PROTECTION AND THE ELEVATOR HORN HEAT FAILED. DUE TO WEATHER ENROUTE, FLIGHT 4173 RETURNED TO PIT. MAINTENANCE INSPECTED, TROUBLESHOT, AND REPLACED THE DATA ACQUISITION UNIT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 31-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: O-RING — FAILED · airframe 15,854 hrs · 20,216 cycles

DURING CRUISE, THE CREW NOTICED A DROP IN OIL PRESSURE AND TEMPERATURE. THE CREW CALLED MAINTENANCE CONTROL, DECLARED AN EMERGENCY, AND SHUT DOWN THE #2 ENGINE. THE CREW THEN LANDED IN STL WITH NO FURTHER INCIDENTS. MAINTENANCE CONTROL SENT MECHANICS FROM PIT TO STL. MAINTENANCE THEN INSPECTED AND FOUND AN O-RING ON THE OIL COOLER NOZZLE DEFORMED ALLOWING OIL TO DRAIN FROM THE ENGINE. MAINTENANCE REPLACED THE O-RING IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 79-00-00. OPERATIONAL AND LEAK CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: FILTER — CLOGGED (LT ENGINE)

EN ROUTE FROM SAT TO OKC, THE CREW RECEIVED A LEFT HAND HIGH PRESSURE FILTER BYPASS CAS MESSAGE AND RETURNED TO SAT. FAIRCHILD MAINTENANCE INSPECTED AND REPLACED THE HIGH PRESSURE FILTER AND THE HIGH PRESSURE BYPASS TEMPERATURE SENSOR IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 73-00-00. OPERATIONAL TESTS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.