N517US

Part: BATTERY PACK — DEFECTIVE (EMERGENCY LIGHTS) · airframe 73,776 hrs · 30,344 cycles

DURING AN OVERNIGHT LINE CHECK, THE EMERGENCY ESCAPE PATH LIGHTING FROM STATION 700 (NEAR DOOR TWO) TO STATION 900 (NEAR THE LEADING EDGE OF THE WING ROOT) WAS FOUND TO BE INOPERATIVE. MAINTENANCE FOUND THE ASSOCIATED BATTERY PACK TO BE DEFECTIVE AND REPLACED IT. THE SYSTEM OPERATED NORMALLY AFTER THE BATTERY PACK WAS REPLACED.

Part: BATTERY PACK — INOPERATIVE (EMERGENCY LIGHT)

DURING THE EMERGENCY LIGHT CHECK AS A PART OF AN OVERNIGHT LINE CHECK, THE ESCAPE SLIDE ILLUMINATION LIGHT AT DOOR 3L FAILED. MAINTENANCE REPLACED BATTERY PACK POWER SUPPLY M735, ALL OPERATIONS WERE NORMAL AFTER REPLACEMENT OF THE BATTERY PACK. (K)

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 66,065 hrs · 27,416 cycles

EMERGENCY LIGHTS INOPERATIVE AT DOORS 2 RIGHT AND LEFT. RE-LAMPED, NO HELP. FOUND BROKEN WIRE AT PIN E OF D40488J. REPINNED WIRE PER WDM 33-51-11. EMERGENCY LIGHTS AT DOOR 2L AND DOOR 2R OPS CHECK GOOD.

Part: LIGHT — INOPERATIVE (EMERGENCY EXIT) · airframe 65,640 hrs · 27,237 cycles

EXTERIOR EMERGENCY EXIT LIGHT AT DOORS 2R AND 2L ARE INOP. TROUBLESHOT SYSTEM IAW WDM 33-51-13 AND FIM 33-51-00 AND FOUND FUSES (2EA) BAD ON BATTERY PACK M733. REMOVED AND REPLACED FUSES. OPERATION CHECKS GOOD.

Part: FLOOR SUPPORT — CORRODED (FUSELAGE) · corrosion level 2 · airframe 59,737 hrs · 24,871 cycles

DURING H-CHECK FOUND CORROSION ON FLOOR SUPPORT AT BS 377 RBL 45. REPAIRED IAW EA 55-200105.

Part: FRAME — CORRODED (FUSELAGE) · corrosion level 2 · airframe 59,737 hrs · 24,871 cycles

DURING H-CHECK FOUND CORROSION ON FUSELAGE FRAME AT BS 1520 RBL 22. REPAIRED PER EA 55-200104.

Part: POWER SUPPLY — INOPERATIVE (FIRST CLASS) · airframe 50,487 hrs · 21,220 cycles

DURING ROUTINE TEST, FORWARD EMERGENCY POWER SUPPLY FAILED 15 MINUTE TEST. MAINTENANCE REPLACED THE POWER SUPPLY AND BATTERY. OPERATIONAL CHECK NORMAL.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 50,487 hrs · 21,220 cycles

IN L2 CHECK, FOUND CRACKED FLOORBEAM. REPAIRED PER EA55-183549.

Part: WARNING — ILLUMINATED (TE FLAPS)

ON APPROACH SEA, TRAILING EDGE FLAP ASYMMETRY WARNING ILLUMINATED AND FLAPS STOPPED AT 17 DEGREES. FLIGHT DECLARED AN EMERGENCY AND LANDED WITHOUT INCIDENT. MAINTENANCE PERFORMED TRAILING EDGE FLAP SYSTEM TESTS. NO DISCREPANCIES NOTED.

Part: HYD LINE — DAMAGED (LT HYD SYST)

ON DESCENT, LEFT HYDRAULIC SYSTEM LOST FLUID SUPPLY. ALTERNATE SYSTEMS WERE USED, AIRCRAFT LANDED IN SFO WITHOUT INCIDENT. MAINTENANCE FOUND THE ENGINE DRIVEN PUMP LINE DAMAGED. THE ENGINE DRIVEN PUMP, LINE AND FILTERS WERE REPLACED. RUN-UP, LEAK CHECK AND FUNCTIONAL TEST WERE SATISFACTORY.

Part: IDG — FAILED (RT ENGINE)

DURING CRUISE, THE GENERATOR INDICATION LIGHT ILLUMINATED. DISCONNECTED RIGHT GENERATOR AND ATTEMPTED TO START APU. APU FAILED TO START. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE RIGHT IDG AND GENERATOR, OPERATIONAL CHECK OK.

Part: COMPRESSOR — FOD (NR 1 ENGINE)

WHILE WAITING IN LINE TO DE-ICE, NR 1 ENGINE SHUT DOWN. A 727 IN FRONT HAD JUST THROTTLED UP AFTER BEING DE-ICED. MAINTENANCE FOUND SNOW AND ICE PLUGGING INTERMEDIATE AREA OF COMPRESSOR. VISUAL AND BORESCOPE INSPECTION OF THE ENGINE WAS PERFORMED, NO DAMAGE WAS FOUND. ENGINE GROUND RUN AND ALL OPERATING PARAMETERS WERE NORMAL.

Part: LAMP — FAILED (LT MLG)

ON APPROACH TO MCO, THE LEFT MAIN LANDING GEAR DID NOT INDICATE DOWN AND LOCKED. REPLACED THE LEFT MAIN GEAR INDICATION LAMPS. ALL LIGHTS TESTED NORMALLY.

Part: ENGINE — FAILED (NR 2)

DURING CRUISE FLIGHT, NR 2 ENGINE OIL FILTER EICAS MESSAGE ANNUNCIATED. COM PROCEDURES WERE FOLLOWED, SHUT DOWN NR 2 ENGINE, FLIGHT DIVERTED TO MSP AND PERFORMED AN UNEVENTFUL LANDING. MAINTENANCE FOUND METAL ON MAG PLUG. REPLACED THE NR 2 ENGINE.

Part: WINDOW SEAL — DISLODGED (LT COCKPIT)

DURING CLIMB AT 10,000 FEET, THE CAPTAIN'S SLIDING WINDOW DEVELOPED A LOUD SQUEAL WHICH PROGRESSIVELY WORSENED UNTIL COMMUNICATION BECAME DIFFICULT AT 28,000 FEET. RETURNED TO MSP WITHOUT FURTHER INCIDENT. FOUND THE SLIDING WINDOW PANE TO FRAME SEAL DISLODGED IN THE WINDOW ASSEMBLY. REPLACED SAME, PRESSURIZATION CHECK OK.

Part: FLOOR BEAM — CORRODED (BS 365)

DURING P-CHECK, FOUND CORROSION IN THE BS 365 FLOOR BEAM UPPER CHORD FROM RBL 45 TO 56. REPAIRED CHORD (P/N 141N5112) PER EA 55-110352.

Part: ENGINE — FAILED (NR 2)

DURING CRUISE, NR 2 ENGINE OIL QUANTITY AND PRESSURE INDICATIONS DROPPED. ENGINE POWER WAS REDUCED TO IDLE FOR REMAINDER OF THE FLIGHT. AIRCRAFT DIVERTED TO ATL AND LANDED WITHOUT FURTHER INCIDENT. REMOVED AND REPLACED NR 2 ENGINE WITH A SERVICEABLE ENGINE.

Part: INDICATION — MALFUNCTIONED (TE FLAPS)

UPON EXTENDING FLAPS TO POSITION NR 1 FOR LANDING IN PDX, RECEIVED TE FLAP DISAGREE MESSAGE AND TRAILING EDGE WARNING LIGHT. FLAPS DID NOT MOVE OUT OF UP POSITION, CREW DECLARED AN EMERGENCY. PERFORMED ALTERNATE FLAP EXTENSION PROCEDURE, LANDED WITHOUT INCIDENT. VISUAL AND OPERATIONAL CHECK OF FLAP SYSTEM CHECKED NORMAL. THE AIRCRAFT RETURNED TO SERVICE.

Part: THRESHOLD — CORRODED (FS 1380-1440)

DURING PERIODIC CHECK, THE AFT CARGO THRESHOLD BEAM CHORD WAS FOUND CORRODED AROUND NUTPLATE HOLES AT FS 1380 TO 1440, RBL 20. REMOVED CORROSION AND INSTALLED REPAIR PER NWA EA 55-98173. (MFG PART NO. 146N8522-51)

Part: FLOORBEAM — CORRODED (FS 324)

DURING PERIODIC CHECK, THE FS 324 FLOORBEAM UPPER CHORD WAS FOUND WITH TYPICAL CORROSION AT LBL 15, WL 208. REMOVED CORROSION AND INSTALLED REPAIR ANGLE PER NWA EA 55-97821.

Part: FLOORBEAM — CORRODED (FS 345)

DURING PERIODIC CHECK, THE FS 345 FLOORBEAM UPPER CHORD WAS FOUND WITH TYPICAL CORROSION. REMOVED CORROSION AND INSTALLED REPAIR PER NWA EA 55-97822.

Part: FLOOR BEAM — CORRODED (FS 365)

DURING PERIODIC CHECK, THE FS 365 FLOORBEAM UPPER CHORD WAS FOUND WITH TYPICAL CORROSION AROUND THE NUTPLATE HOLES. REMOVED CORROSION AND INSTALLED REPAIR ANGLE PER NWA EA 55-97820.