N173DN

Part: WIRE HARNESS — DAMAGED (APU BAY) · airframe 81,871 hrs · 12,455 cycles

DURING DRC CHECK, FOUND APU EGT HARNESS BURNED WIRE INSULATION DAMAGED EXHAUST LEAK. REMOVED AND REPLACED APU PER OPN 6051 AND OPN 7951.

Part: ANGLE — CRACKED (NR 2 PYLON) · airframe 80,075 hrs · 12,228 cycles

THE NR 2 PYLON CLOSEOUT ANGLE WAS FOUND WITH A CRACK IN THE OUTBOARD SIDE. THE MIDSPAR FITTINGS ALSO HAD TOOLING DAMAGE. THE DAMAGED ANGLE WAS REPAIRED WITH REPAIR STRAPS.

Part: FITTING — DAMAGED (TE FLAP) · airframe 80,075 hrs · 12,228 cycles

FLAP COLLAR FITTING REPLACED IAW EA 01-073591-12, ME12, ME13, ME20, ME21.

Part: RELAY — UNKNOWN (NR 1 ENGINE) · airframe 80,043 hrs · 12,223 cycles

LT ENG EEC MODE STATUS. REPLACED K402 RELAY FOR THE LT ENG PROBE HEAT. RAN ENG, OP CKS GOOD.

Part: WIRE — CHAFED (NR 2 ENGINE) · airframe 78,986 hrs · 12,092 cycles

DURING BRAKE RELEASE WHILE PUSHING THROTTLES FORWARD AT APPROX 1.3 EPR, THE RIGHT ENG OIL PRESSURE LIGHT ILLUMINATED AND PRESSURE GAUGE READ AT APPROX 213PSI. IMMEDIATE ABORT PERFORMED. AT IDLE RIGHT ENG OIL PRESS IS NORMAL APPROX 106 PSI. R ENG OIL PRESS EICAS MSG ALSO. FOUND CHAFFED WIRE W354-017-18 ON R ENGINE. MADE TEMP REPAIR PER AMM 71-51-00 BLOCK 801. COMPLETED ENG RUN ALL CHECKS GOOD. TIME LIMITED REPAIR 500 FLT HRS PER SWPM 20-10-13 PARA 2.

Part: DISPLAY — INOPERATIVE (RIGHT) · airframe 76,918 hrs · 11,835 cycles

F/O MCDU FROZE. UNABLE TO HAVE A SUCCESSFUL RESET. DIVERTED TO JFK WHERE PARTS ARE AVAIL. REMOVED AND REPLACED F/O MCDU, OPS NORMAL.

Part: FMU — MALFUNCTIONED (NR 2 ENGINE) · airframe 76,313 hrs · 11,760 cycles

DURING ENG START ACHIEVED STARTER CUTOUT THEN N2 ROLLED BACK REPLACED FMU AND PUMP. C/W LEAK CK. BORO INSP NR 2 ENG, OPS CK ENG START AND OPS PER MM. OK FOR SERVICE.

Part: LAMP — INOPERATIVE (EMERGENCY LIGHT) · airframe 75,440 hrs · 11,654 cycles

FOUND LT SIDE EMERGENCY OVERWING LIGHT INOP. RELAMPED CKS OK.

Part: ENGINE — SHUTDOWN (NR 1) · airframe 75,067 hrs · 11,610 cycles

AT GATE WITH LT ENG RUNNING LT BLEED ON AND 1 PACK RUNNING ENG BEGAN TO VIB THEN SHUTDOWN. BOOST PUMPS WERE TURNED OFF JUST PRIOR TO SHUTDOWN. PERFORMED BITE OF LT ENG PIMU. FAULTED 354-26 EEC CH A/B 28V PERF SOL PWR MSG CLEARED. INSPECTED INLET AND TAILPIPE NO DAMAGE NOTED. T/S PER FIM ENG FLAME OUT 73-21-00 FIG 119. RAN LT AND RT ENGINES, BOTH PARAMETERS NORMAL. COULD NOT DUPLICATE. ALL INDICATIONS NORMAL PER PFHJB AND FIM. NO MSGS FOUND ON PIMU.

Part: ANGLE — CRACKED (NR 1 PYLON) · airframe 73,159 hrs · 11,359 cycles

NR 1 ENGINE PYLON MID SPAR CLOSE OUT ANGLE WAS FOUND CRACKED. REPLACED CRACKED MID SPAR CLOSE OUT ANGLE AND INSPECTED MID SPAR FITTINGS, REF AD 2005-19-23.

Part: BATTERY — INOPERATIVE (EMERGENCY LIGHT) · airframe 71,846 hrs · 11,186 cycles

IR - ON L/O, FOUND EMERGENCY EXIT SIGNS AT DOOR 1L AND 1R. REMOVED AND REPLACED BATTERY PACK FOR DOOR 1L AND 1R EXIT SIGNS, NOW OPS NORMAL.

Part: OVEN — SMOKE (AFT GALLEY) · airframe 71,794 hrs · 11,180 cycles

BOTH AFT GALLEY OVENS PRODUCED SMOKE. C/BS PULLED. CKD OVENS FOUND BUN BEHIND THE TRAY. OPERATED FOR 30 MINS. OPS NORM, OVEN CLEANED.

Part: ENGINE — SURGES (NR 2) · airframe 69,587 hrs · 10,875 cycles

DURING T/O FROM ATL, NR 2 ENGINE SURGED APPROX 5 TIMES. AIRCRAFT RETURNED TO ATL. REPLACED ENGINE.

Part: LOGIC CARD — FAILED (FIRE WARNING SYS) · airframe 69,272 hrs · 10,832 cycles

FWD CARGO FIRE WARNING LIGHT AND FIRE BELL ACTIVATED IN FLT. REPLACED M10427 CARD.

Part: LATCH — CORRODED (SLIDE COMPART) · airframe 64,614 hrs · 10,172 cycles

DURING OFFWING SLIDE COMPARTMENT DOOR LATCH INSPECTION OPN 5894AD, MISC HARDWARE FOUND TO BE CORRODED. REPLACED DELTA PART NUMBERS: 251211768, 011216100, 251210507, 251210349, 011214656, MFG 416T2824-3, 416T2075-1, 416T2836-9, NAS43HT4-10, BACT32G64-1072, 251210196.

Part: ENGINE — DAMAGED (#1 ENGINE) · airframe 60,112 hrs · 9,462 cycles

NBR 1 ENGINE STRUCK BY DEICING BUCKET CREATING 1 FT HOLE IN NOSE COWL. REPLACED NBR 1 ENG INLET COWL PER M/M 71-11-01-4 ETOPS CATEGORY 'F': ANY OTHER EVENT DETRIMENTAL TO ETOPS

Part: PROBE — FAILED (TAT SYSTEM) · airframe 59,280 hrs · 9,308 cycles

DIVERTED TO AMS FOR TAT PROBE REPLACEMENT DUE TO TAT PROBE MESSAGE AND AUTOTHROTTLES DISCONNECTED. THE REASON THE CREW GAVE WAS POSSIBLE ICING CONDITIONS IN FRA. REMOVED AND REPLACED TAT PROBE IAW MM 34-12-02-4, TESTED IAW 30-33, OK.

Part: BLADE — DAMAGED (NR 2 ENGINE) · airframe 56,096 hrs · 8,774 cycles

JFK MTC FOUND SURGE MESSAGE ON EICAS. MTC THEN BORESCOPED ENGINE FOUND COMPRESSOR BLADE DAMAGE. REPLACED RT ENGINE PER TRANSMITTAL 1T149.

Part: SHUTOFF VALVE — MALFUNCTIONED (BLEED AIR) · airframe 54,693 hrs · 8,537 cycles

LEFT DUCT PRESS FLUCTUATED PLUS/MINUS 15 PSI DURING CLIMBOUT. RETURNED TO JFK. REPLACED PRV CONTROLLER AND PRSOV VLV PER M/M. T/O PWR RUN PER PFHB, ALL NORMAL.

Part: CHARGER — FAILED (E/E BAY) · airframe 52,853 hrs · 8,237 cycles

CREW REPORTED BATTERY CHARGER MSG WITH VOLTAGE AT 24 VOLTS. REPLACED BATTERY CHARGER.

Part: WIRE — CHAFED (LT ENGINE)

INSP WIRING FOR LEFT ENG EEC, FOUND DAMAGE TO LEFT ENG CONTROL WIRE. MADE APPROVED REPAIR PER BOEING WIRING STD PRACTICE MNL, FW TO MCO.

Part: ACTUATOR — DAMAGED (LT ELEVATOR)

EICAS C HYD QTY MSG AND CENTER HYD QTY .45. TURNED CENTER ELEC PUMPS OFF, LEAK CONTINUED. TURNED CENTER DEMAND PUMP OFF. FLUID SLOWLY DECREASED .01 PER 20 MINS. FOUND HYD LEAK FROM LEFT ELEVATOR CENTER PCA. TEFLON SEAL CRACKED FROM ROD. REPLACED PCA PER MM 27-31-05-4, LEAK CHECK PERFORMED, NO LEAK

Part: ACTUATOR — LEAKING (RT ELEVATOR)

CENTER SYS HYD QUANTITY DROPPED INFLT TO .38. SHUTOFF PUMPS AND QTY STABILIZED. FOUND RT ELEV PCA LEAKING. REPLACED SAME.

Part: ACTUATOR — LEAKING (RT ELEV)

RT HYD QTY DROPPED TO BELOW .5, RT HYD SYSTEM RSVR LIGHT AND RT HYD QTY MESSAGE. SECURED PRI PUMP AND DEMAND PUMP PER POM AND QTY STABLIZED AT .3. DIVERTED TO JFK. LEAK CHECKED RUDDER AREA AND LANDING GEAR WITH SIMULATED RETRACTION, NO LEAKS FOUND. FOUND RT ELEV AREA WET, FOUND RT ELEV RT SYST PCA LEAKING. PCA NASI JFK. PCA BEING SHIPPED FROM LAX.

Part: HYD SYST — REQUIRED SERVICE (NR 1 ENGINE)

RIGHT HYD SYS RSVR LIGHT AND RIGHT HYD QUANT EICAS MESSAGE. SECURED RT PRIM PUMP AND DEMAND PUMP AS PER ABN PROC QTY CONT TO DROP. LEFT BOTH PUMPS OFF QTY STAB AT .43. SERVICED RT HYD SYSTEM TO FULL. PRESSURIZED SYSTEM FOR APPROX 2 HRS, VISUALLY INSPECTED EXTERIOR OF A/C AND AFT COMPARTMENTS, NO LEAKS FOUND. NO INDICATION OF REDUCTION IN HYD FLUID QTY. RAN ALL FLIGHT CTLS AND BRAKES ASSOCIATED WITH RT SYSTEM, ALL CHECKS NORMAL.

Part: BATTERY PACK — DISCHARGED (ROW 6)

EMERGENCY PATH LIGHTS LT SIDE BUSINESS CLASS FROM ROW 6 TO FIRST ROW T/C INOP. REPLACED BATTERY PACK AT 6 A/B, CKS OK.

Part: PUMP — FAILED (NR2 ENGINE)

RIGHT SYSTEM HYDRAULIC QTY STARTED TO DROP SLOWLY. TURNED ENGINE DRIVEN PUMP OFF AND QTY STILL DROPPED SLOWLY. QTY STOPPED DROPPING AT 0.12. FOUND ENG DRIVEN HYD PUMP LEAKING AT CASE SPLIT LINE. REPLACED PUMP ASSY. ALSO, REPLACED PRESSURE FILTER AND CASE DRAIN FILTERS. NO EVIDENCE OF METAL CONTAMINATION.

Part: SPAR WEB — CRACKED (NR 1 PYLON)

PYLON NR 1 ENGINE STRUT AFT UPPER SPAR WEB, STA 222, LBL 4 CRACK REPAIR. THE AFT UPPER SPAR WEB OF THE NR 1 ENGINE PYLON STRUT WAS FOUND WITH .5 CRACK IN THE AFT, OUTBD CORNER OF THE ECS DUCT CUTOUT AT STA 222 AND LBL 4. THE CRACK WAS ROUTED OUT WITH A SMOOTH RADIUS AND REPAIRED WITH A STEEL REPAIR. DOUBLER PER ER/A 366388-14, REV B.

Part: BULB — FAILED (LT WING)

ON LAYOVER, FOUND LEFT OVERWING EMERGENCY EXIT LIGHT INOP. REPLACED BULB.

Part: BATTERY CHARGER — FAILED (CABIN)

DURING L/O, FOUND EMERGENCY AISLE EXIT SIGN INOP RT OVERWING AND AISLE ILLUMINATION LIGHT INOP. REMOVED AND BATTERY CHARGER ASSY, M732. EMERGENCY LIGHTS OP CK GOOD. ETOPS CATEGORY 'E': PROBLEMS WITH SYSTEMS CRITICAL TO ETOPS.

Part: WEDGE — DELAMINATED (NR 1 LE SLAT)

WING, NR1 LEADING EDGE SLAT, TRAILING EDGE WEDGE. DELAMINATION REPAIR A 1.5 BY 1.2 AREA OF DELAMINATION WAS FOUND ON THE UPPER SURFACE OF THE TRAILING EDGE WEDGE ON THE NR 1 SLAT. THE DELAMINATION WAS REPAIRED PER THE B676 SRM 57-43-02 AND DOCUMENTED PER ER/A 364635-14AD.

Part: SEAT ELECT BOX — FAILED (CABIN)

PROBLEM OCCURED 7 HRS INTO FLT, A SMOKE ODOR WAS OBSERVED COMING FROM THE CAPTS SIDE OF THE ACFT NEAR ROW 24. C/B' S WERE NORMAL. THE F/A WERE DIRECTED TO SHUT OFF POWER TO THE MID GALLEY AND PAX ENTERTAINMENT SYSTEM. THE ODOR DISSIPATED SHORTLY THEREAFTER. REPLACED SEB AT SEAT 22AB.

Part: PUMP — LEAKING (NR 1 ENGINE)

LT HYD SYS QTY DECREASED TO .81, SECURED LT ENG HYD PUMPS. DIVERTED TO LGW. FOUND LEFT ENGINE DRIVEN PUMP LEAKING, REPLACED SAME. OPS CHECK NORMAL.

Part: DOOR SEAL — OUT OF POSITION (E/ECOMPT)

SHORTLY AFTER LEVEL OFF AT FL330, THE CABIN ALTITUDE WARNING CAME ON. CABIN ALTITUDE WAS AT 10,000 FT AND STILL CLIMBING. WENT TO MANUAL FULLY CLOSED AND DESCENDED TO 10,000 FT TO MAINTAIN A CABIN ALTITUDE OF 5700 FT. UNABLE TO FURTHER DESCEND CABIN. FLT ATTENDANTS REPORTED LOUD AIR NOISE OUTSIDE R1 DOOR. FOUND E AND E DOOR LEAKING. SECURED SEAL, PRESSURIZED PER M/M 05-51-24-2. CHECKS GOOD.

Part: SLIDE — FAILED (RT WING)

RIGHT OVERWING ESCAPE SLIDE SQUIB WOULD NOT TEST ON LAYOVER CHECK.

Part: POWER SUPPLY — INOPERATIVE (CABIN)

ON L/O, FOUND EMERGENCY PATH LIGHTS BETWEEN ROWS 23 AND 28 BOTH AISLE INOP. REPLACED PWR SUPPLY AT ROW 28A, OPS CK OK.

Part: CDU — FAILED (LT COCKPIT)

LEFT CDU FAILED 1 HR AFTER T/O. PULLED C/B AND LEFT OUT FOR 20 MINS, RESET AND CDU DID NOT WORK. RETURNED TO JFK. REPLACED LEFT CDU, OPS CHECK GOOD.

Part: FMC — FAILED (RIGHT)

RT FMC LOCKED UP THEN LEFT FMC LOCKED. AFTER A PERIOD OF TIME, BOTH RESUMED NORMAL OPERATION FOR APPROXIMATELY 2 MINUTES, THEN RT FMC FAILED. THEN LEFT FMC FAILED. RE-PROGRAMMED ALL DATA IN FMC. AFTER APPROXIMATELY 2 MINUTES, BOTH FMC'S FAILED AGAIN. ON ARRIVAL NYC, REGAINED RT FMC AND THEN LEFT FMC. ON APPROACH, LT FMC FAILED AGAIN. CORRECTIVE ACTION: REPLACED RT MCDU WITH TWA POOL PART. PERFORMED TEST OF FMS SYSTEMS ALL OK.

Part: SKIN — CRACKED (PYLON)

TWO ADDITIONAL CRACKS WERE FOUND AT HMV, 2/96. ONE CRACK IS IN THE NR 2 PYLON, RT SKIN AND DOUBLER, AND IS 1.38 INCHES LONG, RUNNING DIAGONALLY UP AND AFT FROM THE UPPER AFT CORNER OF THE FWD TORQUE BOX ACCESS OPENING AT NAC STA 170. THE SECOND CRACK IS IN THE NR 1 PYLON RT SKIN ONLY AND IS 1.63 INCHES LONG, RUNNING DIAGONALLY UP AND AFT FROM THE AFT UPPER CORNER OF THE FORWARD TORQUE BOX ACCESS HOLE AT NAC STA 170. ACCOMPLISHED REPAIRS PER DL ERA 273175-14 REV D.

Part: SKIN — CRACKED (NR 2 PYLON)

AT LETTER CHECK IN DFW, A .5 INCH CRACK WAS FOUND IN THE NR 2 ENGINE PYLON OUTBOARD STRUT SKIN. THE CRACK EMANATES FROM THE FORWARD TORQUE BOX ACCESS HOLE AT THE UPPER FORWARD CORNER AT APPROXIMATELY NAC STA 158 AND EXTENDS DIAGONALLY UPWARD AND FWD TO A FASTENER HOLE. BOTH SHEETS OF 0.080 2024-T3 BONDED ASSY ARE CRACKED. REPAIRED PER DL ERA 273175-14.

Part: SLIDE RELAY — DEFECTIVE (E4 RACK)

ON ALL CABIN SERVICE AND ENTRY DOORS, THE SLIDE ARMED LIGHT WILL NOT FLASH IN ARMED MODE WITH THE HANDLE SLIGHTLY PULLED. REPLACED DEFECTIVE RELAY, OPERATION NORMAL.

Part: SENSOR — FAILED (MID LAVATORIES)

AFTER DEPARTING JFK HAD LAV SENSOR FOUL LIGHT WITH F/C RT AFT AND FWD MID LAVATORIES INOP, RETURNED JFK. REPLACED CONTROL MODULE AND SENSORS, OPERATION NORMAL.

Part: HPT BLADE — MISSING (NR 1)

DURING BORESCOPE INSPECTION, FOUND AN HPT BLADE MISSING. ENGINE WAS REMOVED AND ROUTED TO SHOP.

Part: ENGINE — HIGH OIL CONSUMP (NR 2)

AFTER REVIEWING OIL CONSUMPTION HISTORY, IT WAS DETERMINED CONSUMPTION RATE WAS BEYOND LIMITS, ENGINE WAS REMOVED AND ROUTED TO SHOP.