JASC 4997

Service difficulty reports · 226

Reports filed under 4997 · APU System Wiring, newest first.

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duckdb -csv -c "SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy
  FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet'
  WHERE jasc_code = '4997'
  ORDER BY difficulty_date DESC"

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SDR VNAA2011041300008Connector · dirtyCREW REPORTED APU OIL PRESSURE AMBER CAS MESSAGE IN FLIGHT EN ROUTE FROM CLT TO XNA. CREW DIVERTED TO TYS BECAUSE RIGHT GENERATOR WAS DEFERRED AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND FOUND NO FAULTS IN APU ECU (ELECTRONIC CONTROL UNIT). MAINTApr 10, 2011 · N254PS · Cndair CL6002B19SDR VNAA2011040300021Connector · contaminatedCREW REPORTED, RECEIVED AN APU OIL PRESSURE MESSAGE IN FLIGHT. BECAUSE THE RIGHT IDG WAS DEFERED THE CREW DIVERTED TO TYS LANDING WITHOUT INCIDENT. MAINTENANCE TROUBLESHOT THE APU OIL SYSTEM USING THE AIRCRAFT MAITENANCE MANUALS. THE LOW OIL PRESSURE SWITCHMar 30, 2011 · N254PS · Cndair CL6002B19SDR ASAA1159342Connector · looseAPU AIR PRESSURE FLUCTUATES W/ OR W/ OUT AIR LOAD. PERFORMED APU BITE TEST ON FMC CDU FOUND FAULT CODE 49 52194 (IGV ACTUATOR TORQUE MOTOR SHOWS OPEN CIRCUIT) AS PER FIM 49 60 TASK 801. PERFORMED FIM TASK 49 52 00 STEP F (2) GENERAL VISUAL INSPECTION OF ELECMar 24, 2011 · N596AS · Boeing 737890SDR UALA2011021400779Wire · brokenAPU FUEL SHUTOFF VALVE IS INOPERATIVE AND THE APU IS CONSIDERED INOPERATIVE. APU IS INOP ON ACCOUNT OF FUEL SPAR VALVE IS INOP. REPLACED APU FUEL SHUTOFF ACTUATOR, NO HELP. APU STARTS OK, HOWEVER AT SHUTDOWN RECEIVED APU FUEL VALVE MSG UPPER SCREEN ALONG WITHFeb 13, 2011 · N595UA · Boeing 757222SDR UALA2011013100503Wire · shortedAPU AUTO SHUTDOWN AT GATE WITH LOW FUEL PRESSURE WARNING ON ECAM. SHORTED WIRE NEAR APU CIRCUIT BREAKER. DURING REPLACEMENT OF CB AA8, POWER WAS APPLIED TO ACFT & ARCING OCCURRED. WIRE HAS INSULATION DAMAGE TO SEVERAL AREAS. DURING WIRE INSPECTION FOUND WIJan 30, 2011 · N458UA · Airbus A320232SDR UALA2011012700454Connector · dirtyAPU SURGING AND AUTO SHUTDOWN 2 TIMES AT GATE. CLEANED CONNECTORS TO APU SURGE VALVE AND FLOW SENSE MODULE ASSY. RESET APUC. ACCOMPLISHED APU BLEED OPS CHECK.Jan 26, 2011 · N641UA · Boeing 767322SDR FDEA201012144672Wire Harness · burnedDURING APU START AT APPROX 55 SECONDS SMOKE POURING FROM APU - EGT APPROX 525. SHUTDOWN USING FIRE HANDLE & SHOT FIRE BOTTLE. STRONG BURNED RUBBER/WIRE INSULATION TYPE ODOR IN W/W. NO FIRE INDICATION IN COCKPIT. AS PRECAUTION APU CONTROL BREAKER PULLED & CDec 14, 2010 · N487FE · Boeing 727227SDR ASAA1058476Connector · dirtyMAINT MESSAGE 49 52284 SURGE VALVE POSITION DISAGREES WITH COMMAND FAULT FOUND ON APU BITE CK. ACCOMP FIM TASK 49 53 00 810 806. FAULT CORRECTED AFTER WIRE HARNESS CONNECTION WAS CLEANED. OPTS CHECK GOOD NO FAULTS FOUND AFTER MULTIPLE STARTS. SUCCESSFUL GRNov 3, 2010 · N583AS · Boeing 737890SDR ASAA1058421Connector · dirtyATTEMPTED START ON APU AT 2305 Z (PRE FLIGHT) DID NOT START AND FAULT LIGHT APPEARED. INSPECTED AND CLEANED CONNECTOR FOR APU FCU. RE-INSTALLED CONNECTOR. INITIATED START FOR APU START NORMAL. APPLIED ELECTRICAL AND AIR LOAD OPS NORMAL. INITIATED SEVERAL Oct 19, 2010 · N557AS · Boeing 737890SDR UALA2010092703558Feeder Cable · burnedFOUND APU GEN-1 FEEDER CABLES BURNED IN THE BULK CARGO COMPARTMENT LOCATION STA 2060 INNER FRAME NEAR FWD LEFT WASTE TANK. ALSO HAVE CMC EXISTING FAULT MESSAGES: APU GENERATOR-FEEDER-1 FAIL 24049 & APU GENETATOR-1 FAIL 24048. FOUND WIRE W944-113 OUTER SKIN WOSep 26, 2010 · N178UA · Boeing 747422SDR CA100913010Feeder Cable · overheatedDURING OVERNIGHT MX AN ACRID ODOR WAS DETECTED IN THE NOSE EQUIPMENT BAY, THE SOURCE OF THE ODOR WAS TRACED TO BURNED LUGS AT TERMINAL 2431-T10 AT DC CONTACTOR BOX. FURTHER INSP OF THE DC CONTACTOR BOX TERMINALS FOUND 2431-T2 STARTING TO SHOW SIGNS OF OVERHEASep 6, 2010 · Bombdr DHC8400SDR UALA2010083003213Relay · burnedDUE TO APU WILL NOT START ISSUES AND PLANNED APU REPLACEMENT ON 20AUG10 IN SFO. PRECAUTIONARY, REPLACE APU CRANK CONTACTOR RELAY. FOUND WIRE HARNESS FROM FIRE WALL TO STARTER BURNED. ALSO FOUND DAMAGE TO HARD LINES ON APU, AND STARTER BURNED. OPERATIONS ANAug 30, 2010 · N558UA · Boeing 757222SDR UALA2010032300994Wire · openAPU BITE MX MESSAGE DISPLAYED ON ECS PAGE. ECU BITE SHOW DEOIL SOLENOID CIRCUIT FAILED. WIRES RANG OPEN FROM ECU. REPLACED DE-OIL SOLENOID VALVE, NO HELP. FOUND WIRE OPEN BETWEEN D4024P PIN 5 AND DE-OIL SOL CONNECTOR P11 PIN 1. FOUND WIRE FROM PIN 5 D4024P TMar 23, 2010 · N656UA · Boeing 767322SDR UALA2010031800908Connector · faultyAPU INOP. REPLACED BAD ELEC CONNECTOR TO APU SHUTOFF VALVE ACTUATOR. ALL OPS NORMAL. APU STARTS AND RUNS NORMALLY. FOUND DEFECTIVE CONNECTOR, OPS CHECKED SYS, ALL CHECKS GOOD.Mar 18, 2010 · N551UA · Boeing 757222SDR HALA2010031800125Connector · contaminatedETOPS SIGNIFICANT SYSTEM - APU FAULT AFTER LDG (ADD OIL). T/S PER FIM 49-11-22-00-116 PERFORMED ECU FAULT BITE WITH NO FAULTS DETECTED; CHECKED QTY FOUND FULL, NO EVIDENCE OF OIL LEAK. RAN APU UNDER LOAD NO PR'S NOTED. RE-INSPECTED APU FOR LEAKS. CLEANED OMar 18, 2010 · N588HA · Boeing 7673CBSDR SWIA201023738Relay · burnedAPU FEEDER RELAY SHOWS OVERHEATING AND TERMINALS BURNT. (SERVICE CK) REPLACED TERMINAL ENDS AND RELAY.Feb 25, 2010 · N235SW · Emb EMB120ERSDR ABXA201001180004Wire · damagedAFTER APU TURNED OFF DURING AFTER START CHECKLIST, APU GEN OFF EICAS MESSAGE WITH APU RUN LIGHT ILLUMINATED. APU GEN OFF LIGHT ILLUMINATED APU GEN FIELD LIGHT NOT ILLUMINATED. REMOVED AND REPLACED APU ECU AS PRECAUTIONARY MEASURE IAW 767 AMM 49-61-05-4, NO HJan 15, 2010 · N740AX · Boeing 767232SDR E81R_JW30216_1Wire Harness · shortedINVESTIGATED PATS STC INSTALLATION GTCP36-150W FAILING TO START. APU HANGS AT 60 PERCENT, WILL NOT ACCELERATE OR LOAD. FOUND INTERMITTENT OPEN CONNECTION IN WIRING BETWEEN SPEED SENSOR CONNECTOR P6 PIN C AND ECU CONNECTOR P2. ALSO REPLACED EXHAUST TEMPERATURE Dec 23, 2009 · N892QS · Raythn HAWKER800XPSDR CA091118001Relay · overheated(CAN) ELECTRICAL ODOR BEHIND THE CAPTAINS COAT CLOSET. MX INSPECTED AND FOUND THE APU CONTROL RELAY HAD OVER HEATED AND DAMAGED A CONNECTING WIRE. MX REMOVED AND REPLACED RELAY K1XB.Nov 14, 2009 · Cndair CL6002B19SDR QXEA2009110200901Connector · dirtyAPU SHUTDOWN AFTER LOUD BANG AND BRIGHT WHITE LIGHT FOLLOWED BY LOTS OF SMOKE. PLACED ON MEL 49-00-1. CLEARED MEL 10/27/09 INTERIGATED CDS NO PRESENT FAULTS, PREVIOUSLY FAULTS 131 & 124, CLEANED CONNECTORS ON EGT AND SPEED SENSOR, C/W COMBUSTION DRAIN VALVE INOct 27, 2009 · N412QX · Bombdr DHC8402SDR FDEA200910033464Circuit Board · failedAPU FAULTED, RAN QRH CHECKLIST. APU FAULT LIGHT REMAINED ON. SINCE SINGLE GEN OPS RETURNED TO ICT. CREW REPORTED THAT APU DID AUTO SHUTDOWN AND IAW CHECKLIST THEY WERE NOT DIRECTED TO TAKE SWITCH TO OFF. THEY TRIED TO RESTART WITH NO LUCK. WHEN ACFT ARRIVOct 3, 2009 · N903FD · Boeing 7572B7SDR SWIA200922049Cable · damagedBATTERY AND APU ELECTRICAL CABLES HEAT DAMAGE. (SVC CHECK) REPLACED CABLES PER AMM.Jul 21, 2009 · N709SK · Cndair CL6002C10SDR UALA2009050401279Feeder Cable · burnedAPU GENERATOR FEEDER CABLE SEVERELY BURNED. REPLACED TERMINAL END ON APU GEN FEEDER. OPS CHK'D GOOD.May 2, 2009 · N593UA · Boeing 757222SDR UALA2009042901236Pin · burnedAPU GENERATOR FEEDER CONNECTOR D4016P PIN 'A' IS BURNED AND SHOES SIGNS OF ARCING. REPLACED PIN 'A' OF APU CONNECTOR AND OPS CHECKS GOOD.Apr 28, 2009 · N653UA · Boeing 767322SDR A6WA200940071Wire · looseAPU AUTO SHUTDOWN AND TOWER REPORTS SMOKE FROM AIRCRAFT. REMOVED AND REPLACED APU FUEL SOLENOID CONNECTOR PLUG AND BACKSHELL (P5) IAW ESPM 20-17-10. APU OPS CHECK GOOD, REMOVED FROM MEL. (K)Feb 16, 2009 · N447AW · Cndair CL6002B19SDR ASAA0954196Connector · dirtyENROUTE APU OVERSPEED LIGHT ILLUMINATED ALONG WITH MASTER CAUTION. APU CONTROL SWITCH SELECTED TO OFF. OVERSPEED LIGHT EXTINGUISHED 5 MIN AND 40 SECONDS LATER. EGT WENT FROM 200* TO 0* WHEN LIGHT WENT OUT GROUNDED YES. PERFORMED APU BITE PER AMM 49 60 00 FOJan 10, 2009 · N583AS · Boeing 737890SDR CA080721001Wire · chafed(CAN) PATS APU INSTALLATION STC SA95-34 FIRE WARNING AFTER 20 MIN OF APU OPERATION PRIOR TO ENGINE START. APU AUTO SHUTDOWN AND FIRE EXT FIRED. VISUAL INSPECTION OF EXTERIOR OF APU ENCLOSURE SHOWED NO EVIDENCE OF FIRE. APU REMOVED AND FOUND WIRES APU2002-20B, Jul 14, 2008 · Lear 60LEARSDR UALA2008111302602Wire · burnedFOUND GENERATOR LEAD WIRES BURNT AND ARCING ON OIL PUMP, NEEDS REPLACEMENT. UNDER INVESTIGATION 5/19/08. REPLACED APU FEEDER CABLES. REMOVED AND REPLACED OIL PUMP ASSEMBLY. REPLACED APU GENERATOR AND OIL COOLER AND REPLACED GENERATOR FEEDER CABLE. PER MM 4May 4, 2008 · N367UA · Boeing 737322SDR UALA2008111302618Connector · dirtyAPU AUTO SHUT DOWN. REMOVED & CLEANED FUEL CONTROL UNIT CONNECTOR. APU STARTS AND RUNS NORMAL.May 2, 2008 · N647UA · Boeing 767322SDR C2XA08CL053Wire · chafedCLE FLIGHT 2419 - THE CREW REPORTED A APU FIRE DETECT FAIL MESSAGE INTERMITTENTLY DURING FLIGHT. MAINTENANCE INSPECTED AND REPAIRED A CHAFED WIRE ON THE APU HARNESS. PERFORMED OPERATIONAL CHECKS OF THE SYSTEM.May 1, 2008 · N16502 · Emb EMB135ERSDR VNAA0804020Oil System · lowCREW REPORTED AN APU OIL CAUTION MESSAGE IN FLIGHT. CREW ELECTED TO DIVERT TO BNA AND LANDED WITHOUT INCIDENT. MAINTENANCE INSPECTED AND VISUALLY CHECKED THE APU OIL LEVEL AND APU OIL SYSTEM IN ACCORDANCE WITH THE AIRCRAFT MAINTENANCE MANUAL. OIL LEVEL CHECApr 27, 2008 · N254PS · Cndair CL6002B19SDR HALA0800486Circuit Breaker · trippedETOPS SIGNIFICANT SYSTEM, EICAS MESSAGE APU FAULT APU FAILED TO START APU DOOR DISPLAYED. FOUND APU INLET DOOR C/B TRIPPED, RESET C/B INSPECTED INLET DOOR AND ACTUATOR FOR BINDING, NONE NOTED, STARTED APU THREE TIMES. OPS CHECK GOOD EACH TIME, PER FIM 29-11-Apr 3, 2008 · N593HA · Boeing 76733ASDR AMTA200800054Wire · brokenAPU FAULT LIGHT ILLUMINATED AND EICAS APU FUEL VALVE MESSAGE DISPLAYED. FOUND WIRE W2658-001-20 UNDER AFT CARGO PIT FLOOR BROKEN. REPAIRED BROKEN WIRE WITH SPLICES IAW SWP 20-30-12. OPS CHECK GOOD. NO FAULT NOTED. (K)Feb 5, 2008 · N518AT · Boeing 75723NSDR QXEA200701850Connector · damagedPDX - AFTER ENGINE START, THE APU FAULT CAUTION ILLUMINATED FOLLOWED BY A APU SHUTDOWN. COMPLIED WITH CHECKLIST AND MESSAGE WENT AWAY. MAINTENANCE FOUND A UNDERSPEED FAULT AND ECU BUSS FAULT IN THE MDC. RESEATED AND CLEANED THE ECU PINS. OPERATIONAL CHECKSDec 8, 2007 · N605QX · Cndair CL6002C10SDR DLM88071381Terminal Block · burnedAIRCRAFT HAS ELECTRICAL SMELL IN CABIN. FOUND APU FEEDER CABLE TERMINAL BLOCK BURNED BELOW CIRCUIT BREAKER PANEL BEHIND CAPTS SEAT. REMOVED TERMINAL BLOCK. FEE CABLE NEEDS RETERMINATED. REPLACED TERMINAL BLOCK S3-23 AND REPAIRED FEEDER CABLE 3X1B00AAL PER Oct 23, 2007 · N935DL · Doug MD88SDR DL76L071168Wire Harness · damagedDURING DRC CHECK, FOUND APU EGT HARNESS BURNED WIRE INSULATION DAMAGED EXHAUST LEAK. REMOVED AND REPLACED APU PER OPN 6051 AND OPN 7951.Sep 2, 2007 · N173DN · Boeing 767332SDR KPVA200711Relay · burned(PIREP) SMOKE IN COCKPIT AND IN CABIN WHILE BOARDING DOOR OPEN ON GROUND IN JHM. (MX) DETERMINED APU CONTROL RELAY LEFT SIDE NOSE COMPARTMENT MALFUNCTIONED. MEL 49-1 CAT D. (MX) REMOVED & REPLACED RELAY 2449-K62 IAW DHC WD 24-33-03 SHEET 2 PG 1. REMOVED ANAug 24, 2007 · N979HA · Dhav DHC8103SDR 2007UALA02951Wire · damagedCREW COMMENTS: DURING TAXI APU SHUT DOWN WITH LOUD GRINDING MECHANICAL NOISE IN AFT GALLEY. SOME OIL SEEPING DOWN A-C IN APU AREA. DID NOT ATTEMPT APU START FOR SAFETY REASONS. ECU BITE SHOWED "REVERSE FLOW". SOME OIL FOUND SEEPING DOWN IN APU AREA. FOJul 31, 2007 · N594UA · Boeing 757222SDR HALA0700141Connector · looseETOPS SIGNIFICANT SYSTEM, PER FLIGHT CREW APU AIR INOP. BITE CHECKED APU ECU. FOUND FAULT DELTA P SENSOR AND MINI FLAG 15 PER FIM 49-11-00 CHECKED FROM FLOW SENSING MOD. FOUND CONNECTOR LOOSE, CLEANED CONNECTIONS AND RESECURED. RAN APU SEVERAL TIMES AND CYMar 27, 2007 · N593HA · Boeing 76733ASDR AMTA200700096Connector · dirtyAPU FAULT CODE ON AFTER A MANUAL SHUTDOWN 1 HOUR PRIOR TO LANDING. LIGHT EXTINGUISHED AFTER 5 MIN. APU MASTER CAUTION LIGHT DID NOT STAY ILLUMINATED AFTER FAULT LIGHT WENT OUT. PERFORMED FIM, STEP F (1) B (4) VALVE OPERATION NORMAL. NO MX MESSAGE. (CLEAN Feb 18, 2007 · N304TZ · Boeing 73783NSDR XN0A1361Connector · dirtyAPU QUIT AT 22,000 FEET, RUNNING ON ONE GENERATOR TRIED TO RESTART, APU WOULD NOT START. DROPPED TO 20,000 FEET, RESTARTED APU AND IT QUIT AGAIN AT 20,000 FEET. RETURNED TO VHHH. CLEANED AND RESECURED CONNECTIONS AT ECB, APU OPS CHECKS GOOD ON GROUND IAW A3Feb 8, 2007 · N472AS · Airbus A300B4203SDR REXA200600082A/C Pack · leakingON TAXI SMOKE APPEARED IN COCKPIT AND CABIN. LEFT ACM WAS ALREADY DEFERRED UNDER MEL RIGHT PACK DEFERRED BY OUTSTATION. LATER INVESTIGATION SUGGEST APU INTERNAL OIL LEAK. RIGHT PACK DEFER CLEARED AND APU DEFERRED PER MEL.Sep 7, 2006 · N8580A · Cndair CL6002B19SDR SWIA200617131Relay · failedELECTRICAL SMELL FROM GENERATOR CONTROL PANEL. REPLACED APU FEEDER PROTECTION RELAY IAW MM 24-00-00. OPERATIONAL CHECKS GOOD.Aug 28, 2006 · N292UX · Emb EMB120ERSDR QXEA200602089Connector · dirtyDEN - ON PUSHBACK FOR FLIGHT 4436 RECEIVED A APU DOOR OPEN CAUTION MESSAGE. RETURNED TO THE GATE. MAINTENANCE COMPLIED WITH A VISUAL INSPECTION OF THE APU DOOR ACTUATOR AND CLEANED THE CANNON PLUG AND THE ACTUATOR SHAFT. COMPLIED WITH DOOR INHIBIT RESET IAWAug 18, 2006 · N617QX · Cndair CL6002C10SDR HNAA0600107Terminal Block · overheatedSMOKE IN COCKPIT. FOUND APU STARTER GENERATOR CABLES AT AFT SIDE OF FORWARD PRESSURE BULKHEAD OVERHEATED AT TERMINAL BLOCK 24459-TB1. REMOVED AND REPLACED CABLES 2449-7B1 AND 2449-1AL. PART INFORMATION TO FOLLOWJul 10, 2006 · N327EN · Dhav DHC8311SDR HALA0600483Apu · overservicedETOPS SIGNIFICANT SYSTEM, CREW REPORTS APU AUTO SHUT DOWN, NO MESSAGE. FOUND OIL QTY OVERSERVICED BY .25 QTS DRAINED. APU OPS NORMAL.Jul 6, 2006 · N581HA · Boeing 767300SDR AMTA200600397Relay · unserviceableAPU HAD AUTO-SHUTDOWN, FAULT LITE ILLUMINATED AND EICAS MSG. APU FAULT DISPLAYED. NEXT START ATTEMPT ABNORMAL. REMOVED AND REPLACED RELAY K00421 IAW WDM. OPS CHECKED GOOD. (K)Jun 13, 2006 · N518AT · Boeing 75723NSDR DLM90060376Wire Harness · damagedRETURN TO GATE DUE TO ELECTRICAL FUMES IN CABIN.APU AND LEFT ENGINE RUNNING. MOMENTARY LOSS OF ELECTRICAL POWER WITH EMERGENCY POWER COMING ON. EMERGENCY POWER IN USE LIGHT CAME ON WITH SWITCH IN ARM POSITION. APU HARNESS/STARTER AND R2-63 RELAY REPLACEMENTMay 13, 2006 · N916DN · Doug MD900SDR 2005UALA01245Wire · burnedEMPENNAGE INSIDE AT BS 1809 RT SIDE BELOW CENTER HORIZONTAL STAB FEEDER WIRE BUNDLES, INSULATION NOT SECURE, LOOSE ON APU FEEDER SPLICES AND FEEDER WIRES FOUND BURNT. *S/D* THE FEEDER WIRE, SPLICE AND CONNECTOR WERE REPLACED.Nov 6, 2005 · N659UA · Boeing 767322SDR HALA0500889Ground Wire · shortedREMOVED AND REPLACED APU STARTER IAW AMM. DID NOT FIX DISCREPANCY. (LOANER STARTER FROM DELTA). TROUBLESHOT WIRING TO STARTER AND FOUND STARTER GROUND LEADS SHORTED AT TERMINAL/ AIRFRAME SIDE. REPAIRED, REPLACED GROUND LEADS AND TERMINAL ENDS, AND FABRICATAug 4, 2005 · N588HA · Boeing 76733AER
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