N156US

Part: FRAME — CRACKED (FUSELAGE) · airframe 76,864 hrs · 27,187 cycles

DURING L CHECK FOUND CRACK IN RIGHT HAND MAIN LANDING GEAR WHEEL WELL FRAME AT BS 1505. REPAIRED PER EA 178315.

Part: ENGINE — MALFUNCTIONED (NR 2)

DURING DESCENT AT 12,000 FEET WHILE IN TURBULENCE, THE NR 2 ENGINE FLAMED OUT. THE RESTART ATTEMPT WAS SUCCESSFUL WITH ENGINE OPERATION NORMAL FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE INSPECTED THE ENGINE PER THE TAFI MANUAL WITH NO DEFECTS NOTED. ADDITIONAL MAINTENANCE ACTION WAS DEFERRED FOR 5 CYCLES.

Part: FLOORBEAM — CRACKED (BS 791)

DURING M-CHECK, FOUND CRACKS ON THE FLOORBEAM UPPER CHORD AT FS 791, LBL 6 TO RBL 2. REPAIRED PER EA 11-162058.

Part: LONGERON — CRACKED (BS 1431-1503)

DURING M-CHECK, FOUND CORROSION ON HORIZONTAL SECTION OF LONGERON 30R AT FS 1450, 1470 AND 1503. ALSO, FOUND TWO INCH CRACK ON HORIZONTAL SECTION OF LONGERON 30R AT FS 1431. REPAIRED PER EA 11-162065.

Part: LONGERON — CRACKED (BS 1471-1531)

DURING M-CHECK, FOUND CORROSION ON HORIZONTAL SECTION OF LONGERON 31R AT FS 1471 AND 1491. CRACKS WERE ALSO FOUND ON HORIZONTAL SECTION OF LONGERON 31R AT FS 1501 AND 1531. REPAIRED PER EA 11-162069.

Part: LONGERON — CORRODED (BS 1501-1521)

DURING M-CHECK, FOUND CORROSION ON LONGERON 32L BETWEEN FS 1501 AND 1521. REPAIRED PER EA 11-162062.

Part: LONGERON — CORRODED (BS 1521-1531)

DURING M-CHECK, FOUND CORROSION ON LONGERON 34R AT FS 1521 AND 1531. REPAIRED PER EA 11-162072.

Part: LONGERON — CORRODED (BS 1501-1521)

DURING M-CHECK, FOUND CORROSION ON LONGERON 30L BETWEEN FS 1501 TO 1521. REPAIRED PER EA 11-162061.

Part: LONGERON — CORRODED (BS 1601)

DURING M-CHECK, FOUND CORROSION BEYOND SRM LIMITS ON LONGERON 44R AT FS 1601. REPAIRED PER EA 11-162068.

Part: FLOORBEAM — CRACKED (BS 879)

DURING M-CHECK, FOUND CRACK ON THE FLOORBEAM UPPER CHORD AT FS 879 LBL 7. REPAIRED PER EA 11-162057.

Part: RCCB — INOPERATIVE (CABIN)

DURING CRUISE, LOST GROUND SERVICE BUS, VIDEO SYSTEM BECAME INOPERATIVE AND ALSO TOILETS. WATER QUANTITY INDICATED ZERO AND WATER PRESSURE INDICATED LOW. FLIGHT DIVERTED TO BOS AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED RCCB BI-339, OPERATIONAL CHECK NORMAL.

Part: ACTUATOR — OUT OF ADJUST (NR 3 TR UNIT)

ON TAKEOFF ROLL AT APPROXIMATELY 60 KNOTS, THE NR 3 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED AND THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED THE THRUST REVERSER AND ADJUSTED A LOCK ACTUATOR. THE OPERATIONAL CHECK OF THE THRUST REVERSER WAS NORMAL AND THE AIRCRAFT RETURNED TO SERVICE.

Part: WIRE — BROKEN (FUSELAGE)

DURING LINE INSPECITON, FOUND 'B' ZONE LEFT AISLE FLOOR EMERGENCY LIGHTS INOPERATIVE FROM ROWS 10AB TO 20AB. MAINTENANCE REPAIRED BROKEN WIRE TO THE EMERGENCY PATH LIGHTING AT DOOR 2L.

Part: COMPRESSOR — STALLED (NR 1 ENGINE)

DURING TAKEOFF ROLL, PASSENGERS REPORTED A FLASH AND FLAME BALL FROM LEFT WING. ALSO, TOWER REPORTED HEARING A LOUD NOISE. TAKEOFF WAS ABORTED AT 80 KNOTS. CREW SUSPECTED NR 1 ENGINE COMPRESSOR STALL BUT REPORTED NO ABNORMAL INDICAITONS. MAINTENANCE INSPECTED ENGINE PER MM 71-00-00 AND RAN ENGINE TO FULL POWER. NO DEFECTS WERE NOTED. BORESCOPE DEFERRED FOR 5 CYCLES. EXACT PART CAUSING PROBLEM TO BE DETERMINED.

Part: DISAGREE LIGHT — ILLUMINATED (LE SLAT)

DURING TAKEOFF, THE SLAT DISAGREEMENT LIGHT ILLUMINATED. ABORTED TAKEOFF. MAINTENANCE REPLACED THE FLAP POSITION INDICATOR AND INSTALLED THE DC10 SLAT DISAGREE TEST PANEL PER MM 27-84-00. GROUND AND FLIGHT OPERATIONAL CHECK OK.

Part: PROX CONTL BOX — FAILED (LE FLAPS)

DURING TAKEOFF, THE SLAT DISAGREEMENT LIGHT ILLUMINATED WITH THE TAKEOFF WARNING HORN. ABORTED TAKEOFF. MAINTENANCE REPLACED THE MAIN LANDING GEAR PROXIMITY CONTROL BOX AND THE FLAP POSITION INDICATOR.

Part: SWITCH — FAILED (NR 2 THROTTLE)

DURING TAKEOFF, FOUR UNSAFE GEAR UP INDICATION ILLUMINATED. RECYCLED GEAR AND RECEIVED THE SAME INDICATION. FLIGHT RETURNED TO MSP. MAINTENANCE REPLACED THE NR 2 ENGINE THROTTLE SWITCH S1-341.

Part: BLEED CONVERTER — MALFUNCTIONED (NR 3 ENGINE)

AT TOP OF DESCENT, THE NR 3 ENGINE EXPERIENCED COMPRESSOR STALL. THE NR 3 ENGINE WAS SHUTDOWN AND RESTARTED. FLIGHT CONTINUED TO LGW WITHOUT FURTHER INCIDENT. REPLACED BLEED CONVERTER AND PS4 RESTRICTOR. PERFORMED ENGINE RUNUP AND ALL PARAMETERS WERE NORMAL.

Part: COMPRESSOR — STALLED (NR 1/3 ENGINES)

DURING LANDING WHILE IN REVERSE THRUST, THE NR 1 AND NR 3 ENGINES COMPRESSOR STALLED WITH THE EGTS GOING TO 980 DEGREES FOR 5 SECONDS BEFORE THE ENGINES WERE SHUTDOWN. THE ENGNE WAS INSPECTED, BORESCOPED AND A GROUND RUNUP CONFIRMED PROPER OPERATION OF THE ENGINES.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

TOP OF DESCENT, NR 3 ENGINE COMPRESSOR STALLED AND WAS SHUTDOWN. ENGINE WAS RESTARTED AND LANDED WITHOUT FURTHER INCIDENT. THE ENGINE WAS INSPECTED, BORESCOPED AND AN INFLIGHT BLEED CHECK IS SCHEDULED. THE PRBD, EVC REMOVAL AND PRECISION TRIM IS ON DEFERRAL.

Part: TR DRIVE CABLE — BROKEN (NR 2 ENGINE)

DURING TAKEOFF, THE NR 2 ENGINE THRUST REVERSER UNLOCK LIGHT ILLUMINATED. THE TAKEOFF WAS ABORTED. REMOVED BROKEN DRIVE CABLE, INSTALLED LOCKOUT PLATES AND DEFERRED PER MEL 78-1A.

Part: SKIN — CORRODED (FS 1509-1515)

DURING PERIODIC CHECK, FOUND CORROSION ON THE FUSELAGE SKIN, FS 1509 TO 1515, LONGERON 50L AND 50R. REPAIRED SKIN (P/N AYB 7065-1,-2) PER EA 11-98643.

Part: SKIN — CORRODED (FS 1975-1986)

DURING PERIODIC CHECK, FOUND CORROSION IN THE FUSELAGE SKIN DOUBLER FS 1975 TO 1986, LONGERON 50L AND 50R. REPAIRED DOUBLER (AGA 7053-1) PER EA 11-98627.

Part: MOUNTING RINGS — CORRODED (RADIO ALT)

DURING PERIODIC CHECK, FOUND CORROSION ON THE NR 1 AND NR 2 RADIO ALTIMETER ANTENNA MOUNTING RINGS. REPAIRED PER EA 11-98574.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

DURING DESCENT WITH THE POWER LEVERS RETARDED, THE NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL WITH A RISE IN EGT FOLLOWED BY A FLAMEOUT. A RELIGHT WAS SUCCESSFUL AND ENGINE OPERATION WAS NORMAL THE REMAINDER OF THE FLIGHT. THE ENGINE WAS INSPECTED AND FUEL PRESSURES WERE FOUND TO BE OK. A PRBC CHANGE, FLOW DIVIDER CHANGE, AND A BOROSCOPE ARE SCHEDULED.

Part: SKIN — DAMAGED (DOOR 2L)

DURING OVERNIGHT INSPECTION, FOUND FUSELAGE SKIN WAS TORN JUST FORWARD OF DOOR 2L. REMOVED DAMAGE AND REPAIRED PER EA 11-96714.

Part: COMPRESSOR — STALLED (NR 3 ENGINE)

DURING TAKEOFF (CDG), THE NR 3 ENGINE EXPERIENCED A COMPRESSOR STALL AT 48 KNOTS AND THE TAKEOFF WAS ABORTED. THE ENGINE WAS INSPECTED AND A GROUND RUN-UP CONFIRMED PROPER ENGINE OPERATION. A BORESCOPE HAS BEEN SCHEDULED.