N941N

Part: CYLINDER — FAILED (RT MLG) · airframe 85,323 hrs · 74,121 cycles

THE RIGHT MAIN LANDING GEAR COLLAPSED DURING TAXI TO RUNWAY. PRELIMINARY INVESTIGATION REVEALED A FAILED MAIN LANDING GEAR STRUT CYLINDER BARREL.

Part: LONGERON — CRACKED · airframe 85,264 hrs · 74,073 cycles

During an Hck in ATL, an existing repair was found cracked. The crack at station 320 was repaired per EA. 99-190665.

Part: LONGERON — CRACKED · airframe 85,264 hrs · 74,073 cycles

During HCK in ATL, an existing repair had been found cracked. The repair at station 320 was repaired per EA 99-190665.

Part: ACM (RIGHT) · airframe 85,070 hrs · 73,949 cycles

FLIGHT ATTENDANT REPORTED SLIGHT HAZE, FUMES, AND THE AFT LAV SMOKE DETECTOR SOUNDED DURING TAKEOFF. SYMPTOMS LASTED A COUPLE OF MINUTES THEN CLEARED AND THE ALARM STOPPED. FLIGHT RETURNED TO AN UNEVENTFUL LANDING AT MSP. MAINTENANCE REPLACED THE RIGHT ACM AND WATER SEPARATORS AND CLEARED DUCTS OF RESIDUE. RAN PACKS FOR TWO HOURS. NO HAZE OR SMELL DEVELOPED. AIRCRAFT RETURNED TO SERVICE.

Part: SMOKE — DETECTED (CABIN) · airframe 84,976 hrs · 73,883 cycles

THE FORWARD LAV SMOKE DETECTOR ACTIVATED IMMEDIATELY AFTER TAKEOFF AND THE LEAD FLIGHT ATTENDANT OBSERVED SMOKE IN THE CABIN. FLIGHT RETURNED TO MSP AND LANDED SAFELY. MAINTENANCE REMOVED, INSPECTED AND REINSTALLED THE LAV SMOKE DETECTOR. THERE WAS NO EVIDENCE OF SMOKE OR OTHER DAMAGE NOTED IN THE LAV OR ANY ADJACENT AREAS. TESTS ALL CHECKED NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: LINE — LOOSE (AUG VALVE) · airframe 84,339 hrs · 73,464 cycles

WHILE CRUISING AT FL260 WITH ENGINE AND AIRFOIL ANTI-ICE ON, THE CABIN BEGAN A 500 FPM CLIMB. PACK SUPPLY PRESSURE INDICATED 25 PSI ON BOTH PACKS. TURNING OFF THE ANTI-ICE SYSTEM, RESETTING PACK TO MANUAL, AND CLOSING THE OUTFLOW VALVE DID NOT STOP THE PRESSURE LOSS. CREW DECLARED AN EMERGENCY DESCENT DOWN TO 10,000 FEET WHERE THEY WERE ABLE TO RECOVER THE CABIN PRESSURIZATION. THE FLIGHT RETURNED TO ALTITUDE FL200 AND CONTINUED TO MSP WITHOUT INCURRING ANY INBOUND DELAYS. MAINTENANCE TIGHTENED LOOSE LINES AT THE LEFT AUGMENTATION VALVE. AIRCRAFT RETURNED TO SERVICE.

Part: WIRE — FAILED (LEFT GEN SYST)

EN ROUTE MSP-IAD, C PHASE OF LEFT GENERATOR BUS CIRCUIT BREAKERS POPPED FOLLOWED BY ALL ROW H FUEL PUMP CIRCUIT BREAKERS. CREW DECLARED AN EMERGENCY AND FLIGHT WAS DIVERTED TO IND. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED CIRCUIT BREAKER B1-275 AND REPAIRED WIRING. OPERATIONAL CHECK NORMAL AIRCRAFT RETURNED TO SERVICE.

Part: FUSE — BLOWN (CABIN)

DURING LINE CHECK, FOUND ESCAPE PATH LIGHTING AT SEAT ROWS 8 THRU 10 INOPERATIVE. MAINTENANCE REPLACED FUSE, OPERATIONAL CHECK NORMAL.

Part: FUSE — BLOWN (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND FLOOR PROXIMITY EMERGENCY LIGHTS BETWEEN ROWS 11 AND 13 INOPERATIVE. REPLACED BLOWN FUSE. OPERATIONAL CHECK NORMAL.

Part: RADAR TR UNIT — FAILED (E/E COMPT)

WEATHER RADAR SYSTEM FAILED AFTER TAKEOFF. FLIGHT WAS DIVERTED TO ORD AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RADAR TRANSCEIVER AND ANTENNA, OPERATIONAL CHECK NORMAL.

Part: BATTERIES — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND LEFT AND RIGHT FORWARD OVERWING EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERIES IN POWER SUPPLY.

Part: BATTERY PACK — DISCHARGED (LT NACELLE)

DURING LINE MAINTENANCE INSPECTION, FOUND LEFT NACELLE EMERGENCY LIGHT INOPERATIVE. REPLACED BATTERY PACK, OPERATIONAL CHECK NORMAL.

Part: EPR INDICATOR — FAILED (LT ENGINE)

AS TAKEOFF POWER WAS APPLIED, THE LEFT ENGINE EPR INDICAITON WOULD NOT REACH TARGET EPR. CREW ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE LEFT ENGINE EPR INDICATOR, OPERATIONAL CHECK OK.

Part: STRUT — REQD SERVICE (NLG)

AFTER TAKEOFF, UNABLE TO RAISE LANDING GEAR, NOSE WHEEL WAS STEERABLE. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND RETURNED TO YHZ. FLIGHT LANDED WITHOUT INCIDENT. SERVICED NOSE STRUT AND RETURNED AIRCRAFT TO SERVICE.

Part: STRUT — FAILED (NLG)

AFTER TAKEOFF FROM YHZ, UNABLE TO RAISE GEAR. NOSE GEAR REMAINED STEERABLE WITH AIRCRAFT IN GROUND MODE. FLIGHT RETURNED TO YHZ AND LANDED WITHOUT INCIDENT. FOUND LOWER STRUT PISTON ASSEMBLY NOT EXTENDING. REPLACED AND SERVICED LOWER STRUT ASSEMBLY PER MM 32-21-2, OPERATIONAL CHECK OK.

Part: FUEL CONTROL — MALFUNCTIONED (RT ENGINE)

DURING TAKEOFF ROLL AT 80 KNOTS, THE RIGHT ENGINE N1 AND EPR INDICATIONS ROSE ABOVE PRESET LIMITS. TAKEOFF WAS ABORTED AND DURING TAXI, THE RIGHT ENGINE WOULD NOT RESPOND TO THROTTLE MOVEMENTS. THE RIGHT ENGINE WAS SHUT DOWN AND AIRCRAFT RETURNED TO THE GATE. MAINTENANCE REPLACED THE RIGHT ENGINE N1 TACH GENERATOR AND FUEL CONTROL UNIT. LEAK AND OPERATIONAL CHECK OK.

Part: PRESS SWITCH — MALFUNCTIONED (TAIL DEICE)

EN ROUTE MSP-HPN, AIRFOIL ICE PROTECTION PRESSURE ABNORMAL LIGHT ILLUMINATED WITH TAIL DEICE SELECTED. RESET CIRCUIT BREAKER WITH NO HELP. FLIGHT DIVERTED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED TAIL AIR PRESSURE SWITCH. OPERATIONAL CHECK NORMAL. AIRCRAFT RETURNED TO SERVICE.

Part: LONGERON — CRACKED (CARGO COMPT)

DURING H-CHECK, FOUND LONGERON 29L CRACKED IN THE FORWARD CARGO COMPARTMENT. REPAIRED PER EA 99-122034.

Part: INDICATION BULBS — FAILED (NLG)

DURING APPROACH, NOSE GEAR DOWNLOCK GREEN LIGHT DID NOT ILLUMINATE AFTER GEAR WAS EXTENDED. CREW EXECUTED GO-AROUND PROCEDURES AND TOWER REPORTED THAT GEAR APPEARED TO BE DOWN AND LOCKED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND NOSE GEAR GREEN INDICATION LIGHT BULBS BURNED OUT. REPLACED BULBS, OPERATIONAL CHECK NORMAL.

Part: BATTERIES — DISCHARGED (CABIN)

DURING LINE MAINTENANCE INSPECTION, FOUND BOTH AFT OVERWING EXIT EMERGENCY LIGHTS INOPERATIVE. REPLACED BATTERIES, OPERATIONAL CHECK NORMAL.

Part: SWITCH — MALFUNCTIONED (GEAR LEVER)

DURING APPROACH, LANDING GEAR GREEN LIGHT DID NOT ILLUMINATE AFTER GEAR EXTENSION. RECYCLED GEAR AND NORMAL INDICATIONS WERE ACHIEVED. AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED LANDING GEAR LEVER WARNING SWITCH, OPERATIONAL CHECK NORMAL.

Part: STALL WARN COMP — MALFUNCTIONED (LEFT)

STALL WARNING SYSTEM ACTIVATED ON ROTATION. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED LEFT STALL WARNING COMPUTER AND RIGHT AOA TRANSDUCER, OPERATIONAL CHECK NORMAL.

Part: PT7 LINE — BROKEN (NR 1 ENGINE)

ON POWER REDUCTION AFTER TAKEOFF, THE NR 1 EPR INDICATION BECAME ERRATIC. THE AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED A BROKEN PT7 LINE WITH A SERVICEABLE PART AND SYSTEM OPERATION RETURNED TO NORMAL.

Part: SWITCH — DIRTY (GEAR DOOR)

DURING APPROACH INTO SLC, AMBER GEAR DOOR LIGHT CAME ON AFTER GEAR WAS EXTENDED. CREW DID GO-AROUND DURING WHICH GEAR DOOR LIGHT EXTINGUISHED. EMERGENCY EQUIPMENT REQUESTED AS A PRECAUTION. FLIGHT LANDED WITHOUT INCIDENT. CLEANED DOOR SWITCH AND OPERATION CHECKED GOOD.

Part: GUIDE PINS — WORN (TAIL CONE)

DURING LINE CHECK, FOUND THAT EXCESSIVE FORCE WAS REQUIRED TO PULL THE TAIL CONE HANDLE AND THAT THE TAIL CONE DID NOT DROP. ALSO, FOUND 16 WORN GUIDE PINS AND 7 WORN PLATES. REPLACED THE PINS, PLATES AND ACCOMPLISHED EO 5350-01049, CHECKED OK.

Part: SHOCK STRUT — FAILED (NLG)

DURING CLIMB, THE LANDING GEAR WOULD NOT RETRACT. UTILIZED LANDING GEAR RELEASE BUTTON AND LANDING GEAR RETRACTED. AIRCRAFT DID NOT SHIFT INTO FLIGHT MODE UNITL 15 MINUTES INTO FLIGHT. AIRCRAFT CONTINUED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED NOSE LANDING GEAR SHOCK STRUT AND OPERATIONAL CHECK GOOD.

Part: RETRACT MECH — OUT OF ADJUST (LANDING GEAR)

DURING CLIMB, THE LANDING GEAR WOULD NOT RETRACT. ACCOMPLISHED GEAR RETRACTION BY USING LANDING GEAR HANDLE RELEASE BUTTON. RECYCLED LANDING GEAR AND LANDING GEAR OPERATED NORMALLY. AIRCRAFT CONTINUED TO SLC AND LANDED WITHOUT INCIDENT. RIGGED GROUND SHIFT CABLES. OPERATIONAL CHECK GOOD.

Part: RETRACT MECH — LACK OF LUBE (NLG)

DURING CLIMB, THE LANDING GEAR WOULD NOT RETRACT. AIRCRAFT RETURNED TO BIL AND LANDED WITHOUT INCIDENT. REMOVED AND LUBRICATED APEX BOLT ON NOSE LANDING GEAR TRUNNION LINK. OPERATIONAL CHECK GOOD.

Part: SKIN — CRACKED (MCD CUTOUT)

DURING PERIODIC CHECK, FOUND .50 INCH CRACK IN THE FUSELAGE SKIN EXTENDING FROM THE MAIN CABIN DOOR UPPER AFT DOOR STOP HOLE. REPAIRED PER EA 99-98394.

Part: BEAM — CRACKED (CARGO DOOR)

DURING PERIODIC CHECK, FOUND A .375 INCH CRACK IN THE FORWARD CARGO DOOR LOWER BEAM FORWARD END. REPAIRED BEAM (P/N 5910141-63) PER EA 99-98388.

Part: MLG DOOR — OPEN (LT MLG)

LEFT MAIN GEAR DOOR WAS OPEN ON LANDING INTO TUS. REPLACED THE LEFT MAIN GEAR DOOR SEQUENCE VALVE AND ACTUATOR DUE TO DAMAGE INCURRED. LEAK AND OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.