N154US

Part: FITTING — LOOSE (ENGINE MOUNT)

NWA MECHANIC NOTICED GAP BETWEEN THE AFT MOUNT SUPPORT FITTING AND THE AFT ENGINE MOUNT FITTING ON THE NR 3 ENGINE DURING ENGINE INSTALLATION. INSPECTION OF ALL DC-10-40 FLEET OF THE ENGINE MOUNTS AT THE NEXT ''A'' CHECK OR WITHIN 500 FLIGHT HOURS. (X)

Part: MOUNT — MISMANUFACTURED (ENGINE)

SOME DC-10-40 AFT ENGINE MOUNTS WERE MANUFACTURED WITH AN INCORRECT DEPTH OF THE MOUNT BOLT RECESS. THIS CAN RESULT IN A GAP BETWEEN THE PYLON MOUNT FITTING AND THE AFT ENGINE MOUNT DUE TO THE BOTTOMING OUT OF THE MOUNT BOLTS. THE GAP IS BELIEVED TO EXIST BECAUSE OF PREVIOUS REWORK TO BOLT BORE UPPER SURFACE AND/OR ENGINE MOUNT UPPER SURFACE WHICH WOULD REDUCE THE THICKNESS WITHOUT COMPENSATIONS FOR FASTENER GRIP LENGTH. (X)

Part: MOUNT — OUT OF TOLERANCE (NR 3 ENGINE) · airframe 71,100 hrs · 29,230 cycles

DURING NUMBER 3 ENGINE CHANGE A .20 INCH GAP WAS DISCOVERED AT AFT MOUNT, P/N ASL7067-1, S/N 0026 AFTER NEW ENGINE INSTALLED. ENGINE REMOVED AND REPLACED MOUNT WITH P/N ASL7067-1, S/N 0066. ENGINE REINSTALLED.

Part: UNKNOWN — ODOR (CABIN) · airframe 69,927 hrs · 28,884 cycles

AFTER TAKEOFF, STRONG FUMES WERE REPORTED IN THE AIRCRAFT CABIN. FLIGHT CREW DUMPED UNKNOWN QUANTITY OF FUEL AND RETURNED TO DEPARTURE AIRPORT. APU ON MEL FOR POSSIBLE OIL LEAK. MAINTENANCE PERFORMED PACK BURNOUT PROCEDURES.

Part: OVEN — FIRE (GALLEY)

AFTER PUSHBACK, FLIGHT ATTENDANT REPORTED FIRE IN AFT GALLEY. ONE HALON BOTTLE WAS DISCHARGED. AIRCRAFT RETURNED TO GATE. FIRE WAS CAUSED BY PAPER/TRASH BEHIND THE OVENS AND COFFEEMAKER. AFTER CLEANUP, GALLEY EQUIPMENT WAS CHECKED FOR PROPER OPERATION. CHECKED OK.

Part: PRBC VALVE — MALFUNCTIONED (NR 1 ENGINE)

UPON POWER REDUCTION AT FL330, THE NR 1 ENGINE COMPRESSOR STALLED AND THEN FLAMED OUT. THE ENGINE WAS SECURED, AND RESTARTED NORMALLY AT FL300. ENGINE OPERAITON WAS NORMAL FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE INSPECTED THE ENGINE PER TAFI WITH NO DEFECTS NOTED. THE PRBC, CONVERTER VALVE AND PS4 RESTRICTOR WERE REPLACED. AN ENGINE RUN WAS PERFORMED, INCLUDING BLEED CHECKS AND TO TAKEOFF POWER, WITH NO DEFECTS NOTED.

Part: VALVE — CONTAMINATED (PRESS SYS)

DURING CRUISE FROM DTW TO SFO, UNABLE TO MAINTAIN CABIN PRESSURE IN AUTO, STANDBY, OR MANUAL. AFTER DESCENT TO FL140, ABLE TO USE MANUAL CONTROL. FLIGHT DIVERTED TO MSP AND LANDED WITHOUT INCIDENT. FOUND INSULATION STUCK IN LOWER PRESSURE RELIEF VALVE AND UPPER VALVE DOOR STUCK PARTIALLY OPEN. REPLACED BOTH UPPER AND LOWER CABIN PRESSURE RELIEF VALVE. OPERATIONAL CHECK OK.

Part: INDICATION — MALFUNCTIONED (LANDING GEAR)

ON SELECTING GEAR DOWN DURING APPROACH TO HNL, ALL FOUR LIGHTS REMAINED RED AND ANTISKID WOULD NOT TEST. RECYCLED GEAR AND ALL OPERATED NORMALLY WITH NORMAL ANTI-SKID INDICATIONS. FLIGHT LANDED WITHOUT INCIDENT. OPERATIONAL CHECK OK. AIRCRAFT APPROVED FOR FURTHER SERVICE.

Part: VALVE — LEAKING (HORIZ STAB)

HYDRAULIC QUANTITY DECREASED TO ZERO DURING FLIGHT. FLIGHT DIVERTED TO PHX AND LANDED WITHOUT INCIDENT. FOUND LOWER HORIZONTAL STABILIZER CONTROL VALVE LEAKING. REPLACED CONTROL VALVE, LEAK AND OPERATIONAL CHECK OK.

Part: COMPRESSOR — STALLED (NR 1 ENGINE)

DURING LANDING ROLLOUT WHILE IN REVERSE THRUST, THE NR 1 ENGINE COMPRESSOR STALLED. EGT REACHED 930C BEFORE THE ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED THE ENGINE PER MAINTENANCE MANUAL AND RAN ENGINE TO TAKEOFF POWER WITH NO DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE WITH THE BORESCOPE DEFERRED FOR FIVE CYCLES.

Part: COMPRESSOR — STALLED (NR 2 ENGINE)

DURING LANDING ROLLOUT AT APPROXIMATELY 80 KNOTS WHILE IN REVERSE THRUST, THE NR 2 ENGINE COMPRESSOR STALLED. THE ENGINE WAS SHUT DOWN AT APPROXIMATELY 40 KNOTS. THE EGT WAS AT MAXIMUM INDICATION FOR 10 SECONDS. THE ENGINE WAS BOROSCOPED WITH NO TROUBLE FOUND. DUE TO THE OVERTEMP CONDITIONS THE AIRCRAFT WAS REMOVED FROM SERVICED AND FERRIED TO MSP FOR AN ENGINE CHANGE. EXACT REASON FOR ENGINE STALLS TO BE DETERMINED.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

DURING THE LANDING ROLLOUT AT APPROXIMATELY 80 KNOTS WHILE IN REVERSE THRUST, THE NR 3 ENGINE COMPRESSOR STALLED. THE ENGINE WAS SHUT DOWN AT APPROXIMATELY 40 KNOTS WITH THE EGT AT MAXIMUM FOR 10 SECONDS. THE ENGINE WAS BOROSCOPED WITH NO DEFECTS NOTED. THE AIRCRAFT WAS REMOVED FROM SERVICE AND FERRIED TO MSP FOR AN ENGINE CHANGE. EXACT REASON FOR THE ENGINE STALLS TO BE DETERMINED.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

AT TOP OF DESCENT FL330, THE NR 3 ENGINE COMPRESSOR STALLED. ENGINE ANTI-ICE AND FUEL HEAT WERE ON. THE EGT REACHED 870C BEFORE THE ENGINE WAS SHUT DOWN. THE ENGINE RESTARTED NORMALLY AND OPERATED WITHOUT FURTHER DIFFICULTY FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE INSPECTED THE ENGINE PER MM 71-00-00, PG 105 WITH NO DEFECTS NOTED. EXACT PART CAUSING DIFFICULTY TO BE DETERMINED.

Part: TAT WIRING — OUT OF POSITION (COCKPIT)

ON APPROACH INTO MSP UPON GEAR EXTENSION, ALL FOUR GEAR LIGHTS REMAINED RED. EXECUTED GO-AROUND AND RECYCLED GEAR HANDLE. RECEIVED ALL FOUR GREEN LIGHTS, FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND WIRING FROM TAT INDICATOR INTERFERING WITH GEAR HANDLE SWITCH. REPOSITIONED WIRE. OPERATIONAL CHECK OK.

Part: BYPASS SWITCH — FAILED (NR 1 ENGINE)

DURING CLIMBOUT, THE NR 1 ENGINE OIL FILTER BYPASS WARNING LIGHT ILLUMINATED FOR ONE MINUTE. ALL OTHER INDICATIONS WERE NORMAL AND THE LIGHT EXTINGUISHED WITH NO ACTION. DURING DESCENT INTO MSP, THE LIGHT ILLUMINATED AGAIN AND THE CREW SHUT DOWN THE NR 1 ENGINE. THE REMAINDER OF THE FLIGHT WAS COMPLETED WITHOUT INCIDENT. MAINTENANCE REPLACED THE MAIN ENGINE OIL FILTER AND THE FILTER BYPASS PRESSURE SWITCH. ENGINE RUN WAS NORMAL.

Part: ENGINE — FAILED (NR 1)

DURING CRUISE, THE NR 1 ENGINE EGT CLIMBED AT LEAST 100 CELSIUS ABOVE THE OTHER ENGINES. ALL OTHER INDICATIONS WERE NORMAL. THE FLIGHT DIVERTED TO MSP AS A PRECAUTION. THE ENGINE FAILED A BORESCOPE INSPECTION AND WAS REPLACED.

Part: FIRE DETECTOR — MALFUNCTIONED (APU)

DURING TAXI WHILE TRYING TO START APU, FIRE INDICATION LIGHT ANNUNCIATED. CREW DISCHARGED FIRE BOTTLE. MAINTENANCE FOUND NO EVIDENCE OF FIRE. REPLACED APU FIRE BOTTLE AND APU FIRE DETECTOR CONTROL UNIT (P/N 11-2611-9-0001, 90004).

Part: SKIN — CORRODED (BS 1853-1871)

DURING L-CHECK, FOUND CORROSION ON FUSELAGE SKIN FS 1853 TO 1871 AT LONGERON 43L. REPAIRED PER EA 11-124093.

Part: SPAR — CORRODED (WS 1077-1086)

DURING L-CHECK, FOUND CORROSION ON UPPER T-CHORD OF AFT SPAR FROM XORS 1077 TO 1086. REPAIRED PER EA 11-150360.

Part: BLEED SOLENOID — MALFUNCTIONED (NR 2 ENGINE)

AFTER LANDING, WHILE COMING OUT OF REVERSE THRUST, NR 2 ENGINE EGT ROSE RAPIDLY. NR 2 ENGINE WAS SHUT DOWN. MAINTENANCE INSPECTED ENGINE PER MM 72-00-00, PG 227 AND REPLACED BLEED OVERRIDE SOLENOID. THE NR 2 ENGINE WAS GROUND RUN AND CHECKED OK.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

DURING TOP OF DESCENT, THE NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL. THE NR 3 ENGINE WAS SHUT DOWN. THE NR 3 ENGINE WAS RESTARTED AT 25,000 FEET AND OPERATED NORMALLY FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE BOROSCOPE INSPECTED NR 3 ENGINE, NO TROUBLE FOUND. FUEL PUMP AND FUEL CONTROL WERE REPLACED. THE NR 3 ENGINE WAS GROUND RUN AND CHECKED OK.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

AT TOP OF DESCENT, NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL. ENGINE WAS SHUT DOWN AT 31,000 FEET DUE TO RISING EGT. ENGINE WAS RESTARTED AT 29,000 FEET. AN UNEVENTFUL LANDING WAS PERFORMED AT DESTINATION AIRPORT. MAINTENANCE INSPECTED ENGINE PER MM 71-00-00, PG 104-105. NO DISCREPANCIES WERE NOTED. NO PARTS WERE CHANGED.

Part: ENGINE — MALFUNCTIONED (NR 3)

DURING LANDING ROLLOUT IN REVERSE THRUST, THE NR 3 ENGINE EGT BEGAN TO CLIMB. THE NR 3 ENGINE WAS SHUT DOWN AT 915 CELSIUS. MAINTENANCE PERFORMED VISUAL INSPECTION OF ENGINE, NO DISCREPANCIES NOTED. IN ACCORDANCE WITH MM 72-00-00, PG 227, NO ACTION IS REQUIRED.

Part: N 1 TRANSMITTER — FAILED (NR 3 ENGINE)

DURING TAKEOFF ROLLOUT, THE NR 3 ENGINE N1 WOULD NOT REACH TAKEOFF POWER WITH ENGINE FAIL LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE NR 3 N1 TRANSMITTER.

Part: ENGINE — FAILED (NR 1)

EN ROUTE, THE NR 1 ENGINE EXPERIENCED LOSS OF OIL QUANTITY AND PRESSURE. CREW FOLLOWED COM PROCEDURE, SHUT DOWN THE ENGINE, AND RETURNED TO SEA WITHOUT FURTHER INCIDENT. AT THE TIME OF SHUTDOWN, RESIDUAL PRESSURE WAS 28 PSI WITH 30 PERCENT N1 AND 20 PERCENT N2 WINDMILLING RPM REMAINING. THE ENIGNE WAS REPLACED AND AIRCRAFT RETURNED TO SERVICE WITHOUT ALL ENGINE PERFORMANCE TESTS BEING NORMAL.

Part: BATTERY — DISCHARGED (FUSELAGE)

DURING LINE INSPECTION, FLOOR EMERGENCY LIGHTS WERE INOPERATIVE. MAINTENANCE REPLACED FOUR BATTERIES.

Part: HYD PUMP — BROKEN PLUG (NR 1 ENGINE)

DURING CLIMBOUT, LOST THE NR 1 HYDRAULIC SYSTEM FLUID. FLIGHT DUMPED 40,000 LBS OF FUEL AND RETURNED TO HNL. MAINTENANCE REPLACED THE RIGHT HYDRAULIC PUMP AND THE AIRCRAFT RETURNED TO SERVICE.

Part: HANDLE — LACK OF LUBE (LANDING GEAR)

DURING GEAR EXTENSION, THE GEAR HANDLE BUTTON STUCK IN PLACE IN DOWN POSITION WITH AN UNSAFE GEAR INDICATION. RECYCLED GEAR AND MANUALLY PUSHED HANDLE IN AND GOT NORMAL GEAR INDICATIONS. LUBED GEAR HANDLE RELEASE BUTTON AND GEAR HANDLE PIVOTS.

Part: FITTING — CRACKED (VERT STAB)

DURING T-CHECK, FOUND A CRACK IN THE NR 4 BANJO FITTING, FORWARD RIGHT FLANGE IN THE RADIUS. REPAIRED PER SRM 55-20-00, SHEETS 1-17.

Part: LONGERON — CORRODED (FS 1401-1521)

DURING T-CHECK, FOUND CORROSION ON LONGERONS 29R TO 31R BETWEEN FS 1401 TO 1521. REPAIRED LONGERONS PER EA 11-104451.

Part: SKIN — CORRODED (FS 1661-1681)

DURING T-CHECK, FOUND CORROSION ON THE FUSELAGE SKIN FS 1661 TO 1681, LONGERONS 51L AND 51R BENEATH THE ANTI-COLLISION BEACON. REPAIRED SKIN (P/N NFA 6214) PER EA 11-99375.

Part: BULKHEAD — CRACKED (FS 1787)

DURING T-CHECK, FOUND VERTICAL CRACKS IN A FS 1787 BULKHEAD STANCHION AT LBL 9, 10 INCHES ABOVE THE CARGO FLOOR LINE. REPAIRED STANCHION PER EA 11-104463.

Part: SPLICE FITTING — CORRODED (FS 1718)

DURING T-CHECK, FOUND CORROSION ON THE STR 52 SPLICE FITTING AT FS 1718. FABRICATED AND INSTALLED PER AFA 7102-1 AND SRM 53-10-00.

Part: WEB — CORRODED (FS 1908-1921)

DURING T-CHECK, FOUND CORROSION IN THE FLOOR WEB AND DOUBLER AT FS 1908 TO 1921 LBL 88. REPAIRED WEB (P/N AGA 3807-5) PER EA 11-104450.

Part: SEAT TRACK — CORRODED (FS 1878-1908)

DURING T-CHECK, FOUND CORROSION IN THE MAIN CABIN SEAT TRACK FS 1878 TO 1908 AT LBL 100. REPAIRED TRACK (P/N AFA 7789-503) PER EA 11-104452.

Part: DOUBLER — CORRODED (FS 1177)

DURING T-CHECK, FOUND CORROSION ON THE NR 1 RADIO ALTIMETER DOUBLERS AT FS 1177. REPAIRED THE DOUBLERS PER EA 11-104443.

Part: BEAM — CRACKED (FS 761)

DURING T-CHECK, FOUND A CRACK IN THE FS 761 FLOORBEAM AT LBL 8, SEAT TRACK ATTACH HOLE. REPAIRED BEAM (P/N ADA 7226-505) PER EA 11-99295.

Part: FITTING — CRACKED (CARGO DOOR)

DURING T-CHECK, FOUND A CRACK IN THE FORWARD CARGO DOOR LIFT ACTUATOR FITTING, FORWARD LOWER LUG. REPLACED FITTING.

Part: DOOR JAMB — CORRODED (BS 1035-1039)

DURING T-CHECK, FOUND CORROSION IN THE FORWARD CARGO DOOR JAMB LOWER OUTBOARD SILL BEAM BELOW LONGERON 43R FROM FS 1035 TO 1039. REPAIRED THE BEAM (P/N ADA 0250-1) PER EA 11-104446.