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AFTER TAKEOFF, DURING CLIMB AT APPROXIMATELY 12,000 FEET THE LT ENGINE SN CD0072 SHUTDOWN WITH A VERY LOUD NOISE OCCURRING AND AT THE SAME TIME A VERY DESTINCT VIBRATION UNTIL THE ENGINE ROTAION STOPPED. IMMEDIATELY THE ACFT WAS RETURNED TO FIELD WITH NO INCIDENT. A PRELIMANARY BORESCOPE INSPECTION REVEALED DAMAGE TO THE FIRST, SECOND, THIRD, FOURTH AND FIFTH STAGE HIGH PRESSURE TURRBINE SECTIONS. IT HAS NOT BEEN DETERMINED AT THIS TIME THE SPECIFIC CAUSE OF THIS EVENT.

SHORTLY AFTER TAKEOFF LAV SMOKE INDICATION IN EICAS FIELD WITH STRONG OIL SMELL IN CABIN AND COCKPIT. RETURNED TO FIELD. AFTER INSPECTION IT WAS FOUND THAT OIL CONTAMINATION WAS ENTERING THE BLEED SYS FROM THE COMPRESSOR SECTION OF THE ENGINE. IT WILL NOT BE DETERMINED ON WHAT THE SPECIFIC CAUSE OF THIS EVENT WAS UNTIL THE ENGINE HAS UNDERGONE A TEARDOWN AND EVALUATION BY THE MFG.

ON APPROACH IN FLIGHT NOTED A DECREASE OF N1 SPEED AND A POPPING SOUND WAS EMITTED FROM THE LEFT ENGINE WHICH WAS EVIDENT A COMPRESSOR STALL EVENT. DURING THIS EVENT THE ENGINE AUTO IGNITION WAS ENGAGED AND RETURNED TO NORMAL PARAMETERS AFTER A PERIOD OF ABOUT 20 TO 30 SECONDS AND THE AIRCRAFT WAS LANDED WITH NO ABNORMALITIES OR FAULTS PRESENT. DURING THE EVENT THERE WERE NO FAULTS OR MESSAGES PRESENT.

EN ROUTE DTW TO CLT AT FL310 UNCOMMANDED CABIN ALTITUDE CLIMB TO 9100'. MAINTENANCE DETERMINED PNEUMATIC OUTFLOW VALVE/FILTER ASSY CONTAMINATED. VALVE AND FILTERS CLEANED, FUNCTION RESTORED.

LEFT HAND ELEVATOR ANTI-ICE SYSTEM FAIL. FOLLOWED BY ELECTRICAL SMELL IN COCKPIT AND CABIN.

THE NR 1 PFD DISPLAY UNIT REFERENCED HERE IN FAILED DURING TAXI OPERATIONS PRIOR TO FLIGHT. THE SUSPECTED SPECIFIC COMPONENT FAILURE IS THE HIGH VOLTAGE POWER SUPPLY UNIT PN:7018704-902 INSTALLED INSIDE THE CRT DISPLAY UNIT. FURTHER INSPECTIONS WILL BE REQUIRED TO VERIFY THE EXACT CAUSE OF DU FAILURE.

THE NR 1 MFD DISPLAY UNIT REFERENCED HERE IN FAILED DURING TAXI OPERATIONS PRIOR TO FLIGHT. THE SUSPECTED SPECIFIC COMPONENT FAILURE IS THE HIGH VOLTAGE POWER SUPPLY UNIT PN:7018704-902 INSTALLED INSIDE THE CRT DISPLAY UNIT. FURTHER INSPECTIONS WILL BE REQUIRED TO VERIFY THE EXACT CAUSE OF DU FAILURE.

THE HONEYWELL DU-870 DISPLAY UNIT REFERENCED HEREIN FAILED JUST PRIOR TO TAKEOFF. THE SUSPECTED SPECIFIC COMPONENT FAILURE IS THE HIGH VOLTAGE POWER SUPPLY P/N:7018704-902 INSTALLED INSIDE THE CRT DISPLAY UNIT. FURTHER INSPECTION WILL BE REQUIRED TO VERIFY THE EXACT CAUSE OF DU FAILURE.

+THE NR 1 PFD DU-870 DISPLAY UNIT REFERENCED HERE IN FAILED DURING GROUND OPERATIONS. THE SUSPECTED SPECIFIC COMPONENT FAILURE IS THE HIGH VOLTAGE POWER SUPPLY PN 7018704-902 INSTALLED INSIDE THE CRT DISPLAY UNIT. FURTHER INSPECTION WILL BE REQUIRED TO VERIFY THE EXACT CAUSE OF DU FAILURE.

DURING CLIMBOUT, THE CREW REPORTED A FUEL FILTER CAS MESSAGE. THE CREW PERFORMED AN AIR-TURN-BACK. MAINTENANCE REPLACED BOTH THE LT FUEL FILTER AND THE FUEL FILTER PRESSURE SWITCH. OPS CHECK GOOD, AC WAS RETURNED TO SERVICE. (K)

DURING CLIMBOUT, THE CREW REPORTED A FUEL FILTER CAS MESSAGE. THE CREW PERFORMED AN AIR-TURN-BACK. MAINTENANCE REPLACED BOTH THE LT FUEL FILTER AND FUEL FILTER PRESSURE SWITCH. OPS CHECKS GOOD THE AC WAS RETURNED TO SERVICE. (K)

DURING FLIGHT, THE CREW REPORTED LT DC GEN AND FLAP CONTROL FAIL. FLAPS STUCK EXTENDED TO 3 DEGREES. THE CREW PERFORMED AN AIR-TURN-BACK. BRAKES USED HEAVILY ON LANDING AND BRAKE TEMP HIGH MESSAGE RESULTED. MAINTENANCE INSPECTED THE AC. THE LT DC GEN COULD NOT DUPLICATE THE PROBLEM. THE FLAP SYTEM AFTER RESETTING THE FLAP CONTROL UNIT COULD NOT DUPLICATE THE PROBLEM. WHILE INSPECTING THE BRAKES IT WAS DETERMINED THAT THE NR 1 BRAKE WAS WORN TO LIMITS. DURING A FLIGHT THE LT DC GEN FAILED AFTER CYCLING THE GEN THE GENERATOR OPS CHECKED GOOD. MAINTENANCE LATER ON, MAINTENANCE REPLACED THE LT HALL EFFECT DEVICE (HED) FOR TROUBLESHOOTING. (K)

DURING FLIGHT, CREW REPORTED AN AMBER CAS MESSAGE FOR BOTH LT AND RT FUEL QUANTITY INDICATORS. THE CREW CONSULTED WITH MECHANIC AND MADE AN AIR-TURN-BACK. MECHANIC REPLACED THE FUEL CONTROL PANEL AND ALL OPERATIONAL CHECKS WHERE GOOD. (K)

DURING TAKEOFF OF FLIGHT, THE CREW REPORTED LOW PRESSURE BLEED SOV FAIL CAS MESSAGE AFTER POWER UP FOR TAKE OFF. THE CREW ABORTED THE TAKEOFF AND RETURNED TOT HTE GATE. MECHANIC INSPECTED THE SYSTEM AND REPLACED LT PACK FLOW CONTROL VALVE BUT THE SYSTEM STILL OPS CHECKED BAD. MECHANIC THEN SWAPPED THE LT AND RT LOW PRESSURE VALVES (PRSOV) AND OPS CHECKED GOOD. MECHANIC RETURNED THE AC TO SERVICE. AS OF 05/11/05, PROBLEM HAS NOT RETURNED. (K)

APPROXIMATELY 80 KNOTS RECEIVED AN ENGINE ANTI-ICE OVERHEAT AND A SINGLE WARNING CHIME. CREW ABORTED TAKEOFF AND MESSAGE CLEARED DURING ROLLOUT. CREW UNABLE TO DUPLICATE THE PROBLEM AND THE A/C WAS CLEAR TO LAUNCH. DURING FLT 2265, MKE-BNA, THE SAME PROBLEM OCCURRED. THE CREW MADE AN AIR TURN BACK TO MKE. MAINTENANCE REPLACED THE BLEED AIR SHUTOFF VALVE AND WITH ALL OPERATIONAL CHECKS WERE GOOD THE A/C WAS RETURNED TO SERVICE. LATER THAT DAY BEFORE FLIGHT 2127 - CLE-MKE, THE SAME PROBLEM OCCURRED. THE CREW ABORTED THE TAKEOFF AND AGAIN THE MESSAGE CLEARED AND WAS UNABLE TO BE DUPLICATED. ON RETURN TO MKE, MAINTENANCE INSPECTED THE RIGHT ANTI-ICE VALVE AND CONNECTOR, ALL OPERATIONAL CHECK WERE GOOD. (M)

FLT 2380 - MKE-PIT - DURING FLIGHT, THE CREW NOTICED A LEFT GENERATOR OVERHEAT CAS MESSAGE, CONSULTED WITH MX BUT WAS UNABLE TO GET THE MESSAGE TO CLEAR. THE CREW MADE AN AIR TURN BACK TO MKE. MAINTENANCE INSPECTED THE A/C AND REPLACED THE LEFT GENERATOR, AFTER OPERATIONAL CHECKS WERE GOOD THE A/C WAS RETURNED TO SERVICE WITH NO OTHER DISCREPANCIES NOTED. (M)

AFT SECTION OF FLOOR EMERGENCY LIGHTS INOPERATIVE. MECHANIC ADJUSTED ELECTRICAL CONTACTS ON EMERGENCY FLOOR LIGHTING.

DURING FLIGHT, CREW REPORTED A LOAD BANG FROM AFT OF THE FLIGHT DECK FOLLOWED BY A FAINT SMELL OF SMOKE. THEY DONNED OXYGEN MASKS AND REQUESTED PRIORITY, BUT DID NOT SHUTDOWN THE ENGINE OR DECLARE AN EMERGENCY. THE CREW PERFORMED AN UNEVENTFUL LANDING. MX INSPECTED THE ENGINE AND FOUND THE NR 2 COMPRESSOR FAN HAD ONE BLADE THAT APPEARED TO HAVE LOST AND SECTION OF ITS LEADING EDGE AND 3 OTHER BLADES WERE DAMAGED. FANS AFT OF THE NR 2 COMPRESSOR HAD SEVERAL DAMAGED BLADES MOSTLY LIKELY FROM THOSE PIECES GOING THROUGH THE ENGINE. THE ENGINE WAS REMOVED AND SENT TO MFG FOR SERVICE.(K)

CAS MESSAGE FOR HX FAN FAILURE WHILE TAXIING. MX REMOVED AND REPLACED FAN.

VIBRATION IN NOSE LANDING GEAR DURING CLIMB. RTF. MX PERFORMED DETAILED INSPECTION OG NLG, NOSE GEAR BAY, NOSE GEAR DOORS, RADOME. NO DEFECTS NOTED, FOUND NLG TIRES OUT OF ROUND. REMOVED AND REPLACED LT & RT TIRES IAW DORNIER 328 JIC 32-41-01, LANDING GEAR INSPECTION JIC 32-11-00.

ABORTED TAKEOFF DUE TO BLEED SOV FAILURE (HPSOV DID NOT OPEN AND LPSOV DID NOT OPEN ABOVE 80 PERCENT). MX INSPECTED BOTH ENGINES AND PERFORMED FUNCTIONAL CHECK FOR BOTH BSOV IAW JIC 71-03-03. NO FURTHER DISCREPANCIES AT THAT TIME.

BURNING SMELL ON TAKEOFF. DURING BORESCOPE INSPECTION OF RT ENGINE 1ST STAGE HPT BLADE, MX FOUND LEADING EDGE COATING LOOSE. ENGINE IS BEING CHANGED, WAS BAD FROM STOCK.

BURNING ODOR IN CABIN AFTER GEAR RETRACTION. PSBL SMOKE IN CABIN. MECHANIC FOUND DC TIE SWITCH AND RECIRCULATION FAN SWITCH OUT, RESET SWITCHES, PERFORMED OPS CHECK ON BOTH SYSTEMS. NO DEFECT NOTED IAW 24-10-00 AND 21-22-00.

CENTER FLOOR EMERGENCY LIGHTS INOP. RECYCLED POWER. OPS CHECK GOOD.

ABORTED TAKEOFF AT LOW SPEED DUE TO WATER LEAK FROM OVERHEAD BINS AT REAR OF CABIN. OPS CHECK IAW 21-10-00. NO DEFECT NOTED. FLIGHT REDEPARTED.

SECOND CEILING EMERGENCY LIGHT INOP. LIGHT WAS REMOVED AND REPLACED IAW 33-51-04. OPS CHECK GOOD.

DOOR RWP MESSAGE ASSOCIATED WITH CARGO DOOR RED OPEN ON DOOR PAGE. RETURNED TO FIELD. MX RESET PSEU AND INSPECTED CARGO DOOR. NO DEFECT NOTED.

FLOOR EMERGENCY LIGHTING INOPERATIVE.

LEFT ENGINE LOW OIL PRESSURE INDICATION. WHILE ADVANCING THRUST LEVERS, PRESSURE DROP INTO YELLOW ARC. LANDED UNEVENTFULLY. REMOVED AND REPLACED LEFT ENGINE OIL TRANSDUCER (79-31-01).

LOW SPEED ABORT DUE TO LOW FUEL PRESSURE MESSAGE. FOUND LEFT JET PUMP SWITCH PUSHED.

LEFT DC GENERATOR FAILURE IN CLIMBING PHASE. PASSENGERS DEPLANED AT THE GATE. ENGINE BEING REMOVED AND REPLACED.

BEFORE FLIGHT, THE CREW NOTED A CAS MESSAGE FOR LT BLEED SOV FAIL AND LT PACK FAIL. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MX INSPECTED AND OPERATED THE SYSTEM BUT COULD NOT DUPLICATE THE DISCREPANCIES. MX REPLACED THE LT PRESSURE REDUCING VALVE (BOV) FOR TROUBLESHOOTING AND RETURNE THE AIRCRAFT TO SERVICE. (K)

DURING INSPECTION THE EMERGENCY ESCAPE PATH LIGHTING AT ROW 9A WAS FOUND INOPERATIVE. A LOOSE CONNECTOR WAS FOUND AND RESECURED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RETURNED TO SERVICE.

DURING FLIGHT CREW RECEIVED AN EMERGENCY DOOR UNSAFE LIGHT. FLIGHT LANDED UNEVENTFULLY AND PASSENGERS DEPLANED NORMALLY. THE SENSOR FOR THE EMERGENCY EXIT DOOR WAS FOUND SOAKED WITH GLYCOL AND WAS CLEANED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING AIRCRAFT OPERATION THE CREW REPORTED A TAIL DEICE SYSTEM FAILURE. THE EMPENNAGE CROSS BOOT WAS FOUND FAULTY AND REPLACED. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RETURNED TO SERVICE.

DURING TAKEOFF, THE CREW REPORTED AN AMBER NWS MESSAGE. THE FAULT WAS CAUSED BY A LOOSE CONNECTOR LEADING TO THE STEERING MANIFOLD. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

WHILE TAXIING OUT FOR FLIGHT 2419, ATW-MKE, THE CREW NOTED A LOUD NOISE SOUNDING LIKES BRAKES. DETERMINED THT THE RIGHT ENGINES COMPRESSOR WAS STALLING WHEN THE POWER WAS ADVANCED. MAINTENANCE TROUBLESHOT THE SYSTEM AND REPLACE MOST OF THE BLEED SYSTEM COMPONENTS BUT THE COMPRESS STILL STALLED WHEN ADVANCING POWER. MAINTENANCE BORESCOPED THE ENGINE AND DEEMED IT SAFE FOR A FERRY FLIGHT BACK TO MKE. THE ENGINE WAS CHANGED TO CORRECT THE PROBLEM. (M)

DURING INSPECTION THE EMERGENCY LIGHTS NEAR SEATS 4 AND 5 B AND C WERE FOUND INOPERATIVE. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE EMERGENCY POWER SUPPLY. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING INSPECTION THE EMERGENCY LIGHTS WERE FOUND INOPERATIVE. MAINTENANCE PERSONNEL FOUND THE FLIGHT ATTENDANTS EMERGENCY LIGHT SWITCH IN THE ON POSITION AND RECHARGED THE EMERGENCY BATTERIES VIA AIRCRAFT DC POWER. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING CLIMB THE CREW NOTED A PROXY FAIL CAS MESSAGE. FLIGHT RETURNED TO FIELD AS A PRECAUTION AND AIRCRAFT LANDED UNEVENTFULLY. MAINTENANCE PERSONNEL FOUND NOSE STRUT OVERSERVICED AND DESERVICED TO PROPER LEVEL. AIRCRAFT RELEASED FOR CONTINUED SERVICE.

DURING CLIMB THE CREW NOTED A PROXY FAIL AND NLG WOW CAS MESSAGE. EMERGENCY WAS DECLARED AS A PRECAUTION AND AIRCRAFT LANDED UNEVENTFULLY. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE PSEU PROXIMITY BOX. A SATISFACTORY FUNCTIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING MAINTENANCE INSPECTION THE EMERGENCY POWER SUPPLY WAS FOUND INOPERATIVE. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE POWER SUPPLY. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE

DURING MAINTENANCE INSPECTION THE THIRD SECTION OF EMERGENCY TRACK LIGHTING WAS FOUND INOPERATIVE. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE EMERGENCY POWER SUPPLY. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING MAINTENANCE INSPECTION THE EMERGENCY LIGHTING WAS FOUND INTERMITTENTLY OPERATING. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE EMERGENCY POWER SUPPLY. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING MAINTENANCE INSPECTION THE EMERGENCY TRACK LIGHTING WAS FOUND INOPERATIVE. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE EMERGENCY POWER SUPPLY. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE

DURING MAINTENANCE INSPECTION THE EMERGENCY LIGHT WAS FOUND INOPERATIVE. MAINTENANCE PERSONNEL RE-ATTACHED THE EMERGENCY TRACK LIGHTING AND PERFORMED A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED. AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING MAINTENANCE INSPECTION THE NR 7 EMERGENCY BATTERY WAS DISCOVERED INOPERATIVE. MAINTENANCE PERSONNEL REMOVED AND REPLACED THE EMERGENCY POWER SUPPLY. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING MAINTENANCE INSPECTION A FORWARD SECTION OF THE EMERGENCY TRACK LIGHTING WAS FOUND INOPERATIVE. MAINTENANCE PERSONNEL DISCOVERED A LOOSE CONNECTOR AND RECONNECTED IT. A SATISFACTORY OPERATIONAL CHECK WAS PERFORMED AND AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING INSPECTION THE CREW REPORTED THE LAST ONE THIRD EMERGENCY TRACK LIGHTING WAS INOPERATIVE. MAINTENANCE PERSONNEL PERFORMED AN OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM AND COULD NOT DUPLICATE THE FAULT. AIRCRAFT WAS RELEASED FOR CONTINUED SERVICE.

DURING PREFLIGHT INSPECTION, THE CREW REPORTED THAT THE EMERGENCY FLOOR TRACK LIGHTING WAS INOPERATIVE. MAINTENANCE PERSONNEL SECURED A LOOSE BATTERY PACK. AN OPERATIONAL CHECK WAS SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.