N458PS

Part: CONNECTOR — FAILED (APU) · airframe 17,414 hrs · 15,256 cycles

THE CREW REPORTED THAT THE APU FIRE TEST FAILS. MAINTENANCE INSPECTED AND FOUND A LOOSE CONNECTOR ON THE FIRE LOOP. MAINTENANCE TIGHTENED THE CONNECTOR IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 26-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: PROXIMITY SENSOR — OUT OF ADJUST (RT MLG) · airframe 16,819 hrs · 14,774 cycles

DURING CLIMB OUT, THE CREW DISCOVERED THAT THE GEAR WOULD NOT RETRACT AND RETURNED TO PIT. MAINTENANCE INSPECTED AND FOUND THE RIGHT HAND MAIN LANDING GEAR PROXIMITY SENSOR OUT OF ALIGNMENT. MAINTENANCE ADJUSTED THE SENSOR IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 16,635 hrs · 14,627 cycles

THE CREW REPORTED THAT THE EMERGENCY FLOOR LIGHTING AT ROWS 4-7 WERE NOT ILLUMINATING. MAINTENANCE INSPECTED AND REPLACED THE 5LK EMERGENCY BATTERY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: VALVE — FAILED (MLG) · airframe 16,540 hrs · 14,546 cycles

THE CREW REPORTED A EMERGENCY PARKING BRAKE CAS MESSAGE. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY PARKING BRAKE VALVE IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 16,488 hrs · 14,503 cycles

THE CREW REPORTED THAT THE SECOND SECTION OF EMERGENCY LIGHTING WAS NOT ILLUMINATING. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY AT THE 5LK POSITION. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: SENSOR — FAILED · airframe 16,417 hrs · 14,448 cycles

DURING TAKE OFF, THE CREW RECEIVED A DOOR SWITCH FAIL AND A PROXI SYSTEM FAIL CAS MESSAGE AND ABORTED TAKE OFF. MAINTENANCE INSPECTED AND CLEANED THE PROXI SENSOR AND RERACKED THE PSEU IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 16,408 hrs · 14,442 cycles

THE CREW REPORTED THAT THE FIRST SET OF EMERGENCY FLOORING LIGHTING WAS NOT ILLUMINATING. THE AIRCRAFT WAS THEN FERRIED TO DAY. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY AT THE 4LK POSITION IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 16,404 hrs · 14,439 cycles

THE CREW REPORTED THAT THE FLIGHT ATTENDANTS EXIT SIGN WAS NOT ILLUMINATING. THE AIRCRAFT WAS THEN FERRIED TO DAY. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY AT THE 4LK POSITION IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — FAILED (#2) · airframe 16,299 hrs · 14,349 cycles

ENROUTE, THE CREW RECEIVED A BATTERY OVERHEAT INDICATION AND DIVERTED TO PIT. MAINTENANCE INSPECTED AND REPLACED THE NUMBER 2 MAIN BATTERY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 24-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 16,196 hrs · 14,273 cycles

THE CREW REPORTED THAT THE EMERGENCY FLOOR LIGHTING AT ROWS 4 TO 7 WERE NOT ILLUMINATING. MAINTENANCE INSPECTED AND REPLACED THE 5LK EMERGENCY BATTERY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: PSEU — MALFUNCTIONED (CABIN) · airframe 16,188 hrs · 14,267 cycles

THE CREW REPORTED THAT THE LEFT HAND EMERGENCY DOOR SWITCH WAS INDICATING OPEN INTERMITTENTLY. MAINTENANCE INSPECTED AND RERACKED THE PSEU IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: FAN — FAILED (E/E BAY) · airframe 16,090 hrs · 14,186 cycles

WHILE EN ROUTE FROM CAE TO DCA, THE CREW RECEIVED AN AHARS OVERHEAT MESSAGE. THE CAPTAIN CONTACTED MAINTENANCE CONTROL AND THE DECISION TO DIVERT TO PIT WAS MADE. WHEN AT PIT, MAINTENANCE INSPECTED AND REPLACED THE AHARS FAN IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 34-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: SENSOR — FAILED · airframe 16,066 hrs · 14,162 cycles

THE CREW REPORTED THE EMERGENCY EXIT DOOR SWITCH WAS FAILING INTERMITTENTLY. OUTSTATION MAINTENANCE INSPECTED AND FOUND THE EMERGENCY EXIT DOOR SENSOR TO BE TOUCHING ITS TARGET. OUTSTATION MAINTENANCE ADJUSTED THE SENSOR IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-71-00. OPERATIONAL TESTS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: GENERATOR — FAILED (LH) · airframe 14,187 hrs · 12,571 cycles

DURING TAKE OFF, THE CREW RECEIVED A LEFT HAND GENERATOR FAIL CAS MESSAGE AND ABORTED TAKE OFF. THE CREW COMPLIED WITH THE QUICK REFERENCE HANDBOKK AND RESET THE SYSTEM. FLIGHT 9408 WAS CLEARED FOR ANOTHER TAKE OFF ATTEMPT AND DEPARTED WITH NO FURTHER INCIDENTS.

Part: PANEL — FAILED (COCKPIT) · airframe 14,189 hrs · 12,572 cycles

DURING TAKEOFF, THE CREW RECEIVED A LEFT HAND GENERATOR FAIL CAS MESSAGE AND ABORTED TAKEOFF. MAINTENANCE WAS SENT TO LEX AND FOUND NO DISCREPANCIES. THE AIRCRAFT WAS FERRIED TO PIT WHERE MAINTENANCE INSPECTED AND REPLACED THE 1VE PANEL IN ACCORDANCE WITH 24-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — FAILED (RH) · airframe 14,040 hrs · 12,442 cycles

WHILE CLIMBING THROUGH5000 FEET THE CREW RECEIVED A RIGHT HAND BATTERY OVERHEAT CAS MESSAGE AND THE FLIGHT RETURNED TO CAK. MAINTENANCE INSPECTED AND REPLACED THE RIGHT HAND BATTERYIN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 24-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 12,945 hrs · 11,478 cycles

THE CREW REPORTED THAT THE EMERGENCY LIGHTING WAS NOT OPERATING IN THE FIRST FLOORING STRIP. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY IN THE 5LK POSITION IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: WARNING LIGHT — ILLUMINATED (COCKPIT) · airframe 12,925 hrs · 11,462 cycles

BEFORE LEVELING OFF AT 24,000 FEET, THE CREW RECEIVED A RED WARNING PANEL INDICATION FOR THE MAIN CABIN DOOR. THE CREW CALLED MAINTENANCE CONTROL AND REFERENCED THE QUICK REFERENCE HANDBOOK WHICH INSTRUCTED THEM TO LAND AT THE NEAREST AIRPORT. FLIGHT 4190 LANDED IN ROCHESTER WITHOUT ANY FURTHER INCIDENTS. OUTSTATION MAINTENANCE INSPECT THE AIRCRAFT AND FOUND NO DEFECTS. THE AIRCRAFT WAS FERRIED TO PIT WHERE MAINTENANCE TROUBLESHOT AND INSPECTED THE AIRCRAFT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 52-00-00. NO DEFECTS COULD BE FOUND. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — DISCHARGED (CABIN) · airframe 12,603 hrs · 11,194 cycles

THE FLIGHT CREW FOUND THAT THE ROW SIX EMERGENCY LIGHT WOULD NOT ILLUMINATE. MAINTENANCE REPLACED THE 5LK EMERGENCY BATTERY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-01. OPERATIONAL CHECKS WERE COMPLETED AND THE AIRCRAFT RETURNED TO SERVICE.

Part: GOVERNOR — FAILED

PHL - FLT 4152 - DURING CLIMB-OUT PASSING THROUGH 18,000 FEET, THE RIGHT ENGINE STARTED TO SURGE 6 TO 7 PERCENT. THE CREW REFERENCED THE QUICK REFERENCE HANDBOOK, CALLED MAINTENANCE CONTROL, THEN RETURNED TO PHL. MAINTENANCE INSPECTED AND REPLACED THE OVERSPEED GOVERNOR IAW DORNIER MM 72-00-00. OPS CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE. (M)

Part: BATTERY — INOPERATIVE (CABIN)

ERI - FLT 4027 - AIRCRAFT WAS IN ERI WITH EMERGENCY LIGHTS AT ROW 4 THROUGH 6 INOPERATIVE. AIRCRAFT WAS FERRIED TO PIT AND THE 5LK BATTERY WAS REPLACED IAW DORNIER MM 33-51-01. AIRCRAFT DEPARTED WITH NO FURTHER INCIDENT. (M)

Part: BATTERY — FAILED (EXIT SIGN) · airframe 11,552 hrs · 10,305 cycles

THE CREW REPORTED THAT THE EXIT SIGN ABOVE FLIGHT ATTENDANT SEAT WAS NOT ILLUMINATING. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-01. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — FAILED (ROWS 4 - 6) · airframe 11,519 hrs · 10,277 cycles

THE CREW REPORTED THAT THE EMERGENCY LIGHTING AT ROWS 4, 5, AND 6 WOULD NOT ILLUMINATE. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY AT THE 5LK POSITION IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-01. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: BATTERY — FAILED (CABIN) · airframe 11,092 hrs · 9,906 cycles

THE CREW REPORTED THAT THE EMERGENCY LIGHTING AT ROWS 5 AND 10 WERE NOT ILLUMINATING. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY BATTERY AT THE 6LK POSITION IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-01. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: METER — FAILED (BRAKE SYSTEM) · airframe 11,076 hrs · 9,892 cycles

THE CREW REPORTED THAT THE BRAKES WERE INOPERATIVE. MAINTENANCE INSPECTED AND REPLACED THE BRAKE METERING UNIT IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-42-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: A/C PACK — MALFUNCTIONED (CABIN PRESSURE)

WHILE EN ROUTE FROM BHM TO PIT, THE AIRCRAFT WAS AT FL250 WHEN THE CREW RECEIVED A RED WARNING PANEL CABIN ALTITUDE LIGHT. THE CABIN WAS AT 9500 FEET, THE CAPTAIN DECLARED AN EMERGENCY AND MADE A EMERGENCY DECENT TO 10,000 FEET. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK PROCEDURES. THE PACKS THEN BEGAN OPERATING NORMALLY SO THE CREW TERMINATED THE EMERGENCY WITH CHATTANOOGA APPROACH CONTROL. FLIGHT 4047 CONTINUED AND LANDED IN PITTSBURGH WITHOUT INCIDENT.

Part: CONTROL UNIT — FAILED (NLG STEERING)

DURING TAKEOFF, THE CREW RECEIVED A NOSE WHEEL STEERING FAIL CAS MESSAGE. THE CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE INSPECTED AND RERACKED THE NOSE WHEEL STEERING CONTROL BOX IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-51-06. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: ECU — FAILED (ENGINE)

DURING TAKEOFF, THE CREW RECEIVED A ENGINE ELECTRONIC CONTROL UNIT CAS MESSAGE. THE AIRCRAFT CLEARED THE RUNWAY AND RETURNED TO THE GATE. MAINTENANCE INSPECTED AND CHECKED THE ITEM BUT COULD NOT DUPLICATE THE PROBLEM. THE AIRCRAFT WAS REPOSITIONED AS FLIGHT 9469 AND DEPARTED WITH NO FURTHER INCIDENT.

Part: GENERATOR — FAILED (LEFT)

DURING TAKEOFF, THE CREW RECEIVED A LEFT GENERATOR FAIL MESSAGE. THE CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND RESET THE GENERATOR. MAINTENANCE CONTROL CLEARED THE AIRCRAFT FOR ANOTHER TAKEOFF ATTEMPT.

Part: ECU — FAILED (LT ENGINE)

DURING THE TAKEOFF ROLL, THE FLIGHT CREW EXPERIENCED A LEFT HAND ELECTRONIC ENGINE CONTROL UNIT FAIL CAS MESSAGE. THE CREW ABORTED TAKEOFF. THE CREW RESET THE ELECTRONIC ENGINE CONTROL UNIT AND THE AIRCRAFT CHECKED GOOD. MAINTENANCE CONTROL CLEARED THE AIRCRAFT FOR ANOTHER TAKEOFF ATTEMPT. THE AIRCRAFT TOOK OFF WITHOUT FURTHER INCIDENT.

Part: CONNECTOR — CONTAMINATED (LT ENGINE)

DURING THE TAKEOFF ROLL, THE FLIGHT CREW EXPERIENCED A LEFT HAND ELECTRONIC ENGINE CONTROL UNIT FAIL CAS MESSAGE. THE CREW ABORTED TAKEOFF. MAINTENANCE INSPECTED AND CLEANED THE CANNON PLUGS IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 75-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: GENERATOR — FAILED (STARTER/GEN)

DURING THE TAKEOFF ROLL, THE FLIGHT CREW EXPERIENCED A LEFT HAND GENERATOR FAILURE. THE CREW ABORTED TAKEOFF AND EXITED THE RUNWAY. THE CREW PERFORMED THE QUICK REFERENCE PROCEDURES AND ATTEMPTED ANOTHER TAKEOFF. THE FLIGHT TOOK OFF WITHOUT FURTHER INCIDENT.

Part: ECU — FAILED (NLG STEERING)

THE AIRCRAFT WAS TAKING THE RUNWAY FOR TAKEOFF WHEN THE CREW RECEIVED A NOSE WHEEL STEERING FAIL CAS MESSAGE. THE AIRCRAFT WAS DIFFICULT TO CONTROL SO THE CREW BROUGHT THE AIRCRAFT TO A STOP. THE FLIGHT CLEARED THE RUNWAY AND RETURNED TO THE GATE WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND PERFORMED A TAXI CHECK IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-50-00. THE AIRCRAFT WAS THEN RELEASED FOR SERVICE.

Part: BLEED VALVE — FAILED (LT ENGINE)

DURING CLIMB-OUT, THE LEFT ELECTRONIC ENGINE CONTROL UNIT FAILED. THE AIRCRAFT RETURNED TO THE FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED AND CLEANED THE LEFT HAND INTERCOMP BLEED VALVE CANNON PLUG AND SCREEN IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 75-00-00. OPERATIONAL CHECKS WERE PERFORMED AND THE AIRCRAFT WAS RELEASED FOR SERVICE.

Part: ECU — FAILED (LT ENGINE)

ON THE TAKEOFF ROLL, THE LEFT ENGINE ECU FAILED AND THE NH REACHED 104 PERCENT FOR ONE SECOND. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE INSPECTED THE ENGINE FOR FOD INGESTION AND DETERMINED THE AIRCRAFT WAS SAFE FOR FERRY FLIGHT TO DAY FOLLOWING A POWER ASSURANCE RUN. THE FERRY FLIGHT WAS COMPLETED WITHOUT INCIDENT. MAINTENANCE THEN COMPLETED A SOFT MATERIAL INGESTION INSPECTION IN ACCORDANCE WITH SPECIAL INSPECTION 05-57-07. NO DAMAGE WAS NOTED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: RELAY — MALFUNCTIONED (RUDDER TRIM)

DURING DESCENT TO GSP AN UNCOMMANDED RUDDER TRIM WAS NOTICED BY THE FLIGHT CREW. A NORMAL LANDING WAS PERFORMED IN GSP. MAINTENANCE INSPECTED THE AIRCRAFT AND REPLACED THE 26CC AND 28CC RELAYS IN ACCORDANCE WITH MAINTENANCE MANUAL 27-22-00. OPERATIONAL CHECKS WERE COMPLETED AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BULB — FAILED (LT MLG)

THE LEFT HAND MAIN LANDING GEAR FAILED TO INDICATE A DOWN AND LOCKED CONDITION WHEN SELECTED. THE CREW DECLARED AN EMERGENCY, AND FOLLOWED THEIR QUICK REFERENCE HANDBOOK. THE AIRCRAFT CONTINUED THE APPROACH AND LANDED SAFELY. MAINTENACE INSPECTED AND REPLACED THE POSITION INDICATOR LIGHT BULBS, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 31-14-00. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: PWR SUPPLY — FAILED (ROW 7LK)

DURING THE PREFLIGHT INSPECTION, A STRIP OF EMERGENCY FLOOR LIGHTING WAS NOTED TO BE INOPERATIVE. MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY POWER SUPPLY AT THE 7LK POSITION, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 33-51-00. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BATTERY — DISCHARGED (ROW 11)

DURING THE POSTFLIGHT INSPECTION, EMERGENCY LIGHTS AT ROW 11 WERE NOTED TO BE INOPERATIVE. OUTSTATION MAINTENANCE INSPECTED AND APPROVED THE AIRCRAFT FOR A FERRY FLIGHT TO PIT FOR REPAIR. THE FERRY FLIGHT TOOK PLACE WITHOUT INCIDENT. PIT MAINTENANCE INSPECTED AND REPLACED THE EMERGENCY LIGHT BATTERY PACK AT 7LK POSITION, IN ACCORDANCE WITH DORNIER MAINTENANC MANUAL 33-51-00. OPERATIONAL CHECKS WERE COMPETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: BATTERY — DISCHARGED (ROW 7LK)

DURING THE PREFLIGHT INSPECTION, SOME EMERGENCY LIGHTS AT THE REAR OF THE AIRCRAFT WERE NOTED TO BE INOPERATIVE. MAINTENANCE INSPECTED AND REPLACED THE BATTERY PACK AT POSITION 7LK. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: TIRE — LOW PRESSURE (LT MLG)

DURING THE TAXI FOR TAKEOFF, THE CREW FROM FLIGHT 4151 RECEIVED A REPORT FROM ANOTHER CREW ON RADIO, THAT THE LEFT MAIN TIRES LOOKED TO BE LOW ON AIR PRESSURE. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND SERVICED THE LEFT HAND INBOARD TIRE, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 12-13-10, AND RETURNED THE AIRCRAFT TO SERVICE.

Part: CONTROL UNIT — FAILED (NLG STEERING)

DURING THE TAXI FOR TAKEOFF, A NOSE WHEEL STEERING FAIL WARNING MESSAGE OCCURRED. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE HYDRAULIC STEERING CONTROL UNIT, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 32-51-01. OPERATION AND LEAK CHECKS WERE COMPLIED WITH, AND THE AIRCRAFT WAS RETURNED TO SERVICE.

Part: CONTROL UNIT — MALFUNCTIONED (ANTI-SKID SYST)

AN ANTI-SKID FAIL WARNING MESSAGE ILLUMINATED, DURING TAXI FOR TAKEOFF. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE CYCLED ELECTRICAL POWER AND RE-RACKED THE ANTI-SKID CONTROL UNIT. OPERATIONAL CHECKS WERE COMPLETED IN ACCORDANCE WITH DORNIER MANTENANCE MANUAL 32-40-00.

Part: APU — SMOKING (AFT FUSELAGE)

AFTER T/O, THE COCKPIT AND CABIN FILLED WITH SMOKE. CREW SHUT DOWN ENVIROMENTAL CONTROL SYSTEMS AND RECIRCULATION FANS. ALSO, APU WAS SHUT DOWN. THE SMOKE CLEARED FROM THE A/C. THE A/C RETURNED TO THE FIELD AND LANDED, W/O ANY FURTHER INCIDENTS. MX INSPECTED AND DETERMINED DE-ICE FLUID WAS INGESTED INTO APU, AND CAUSED THE SMOKE. MX RAN THE ENVIROMENTAL SYSTEMS, IAW DORNIER MM 21-21-00 TO REMOVE ANY RESIDUAL SMELLS FROM THE SYSTEM, AND DEFERRED THE APU IAW THE DORNIER 328 MEL. A/C WAS RETURNED TO SERV. 06 FEB 98, THE APU WAS OP'S CHECKED IAW DORNIER MM 49-10-00 AND 21-21-00. THE DEFERRAL WAS REMOVED, AND THE A/C WAS RETURNED TO SERV.

Part: CONNECTOR — DIRTY (LT PROP)

LT PROP LOW PITCH CAS MESSAGE CAME ON AND ENGINE FLUX WHEN POWER LEVERS WERE ADVANCED. MAINTENANCE CLEANED THE CONNECTORS ON THE LT PCU AND ECU, PERFORMED GROUND RUN, OPERATIONAL CHECK GOOD.

Part: TIRE — FLAT (LT MLG)

DURING TAXI OUT, CREW REPORTED HEARING A LOUD THUMPING SOUND FROM THE LEFT SIDE OF THE AIRCRAFT, ASSOCIATED WITH THE AIRCRAFT SLOWING ALMOST TO A STOP. CREW ELECTED TO SHUT DOWN BOTH ENGINES AND CALL MX. UPON ARRIVING AT THE AIRCRAFT, MX NOTICED THAT THE LEFT OUTBOARD MAIN LANDING GEAR TIRE WAS FLAT. MX REPLACED THE LEFT MAIN LANGING GEAR TIRE/WHEEL ASSEMBLY IAW MM 32-40-00.