JASC 4900

Service difficulty reports · 1,840

Reports filed under 4900 · Airborne Auxiliary Power Unit (APU) System, newest first.

Query with SQL
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 = '4900'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR FDKA200609258Apu · odorFDM 6070 MCO. CREW NOTED A FUEL SMELL WHILE STARTING APU. MX PERFORMED OPS CHECKS RAN APU AND ENGINES EXTENSIVELY AND OPS CHECKED GOOD. NO SMELL NOTED.Sep 12, 2006 · N843MJ · Emb EMB145LRSDR HALA0600619Apu · shutdownAPU AUTO SHUTDOWN IN FLT DUE TO LOW OIL QUANTITY. INSPECTED APU NO LEAKS NOTED SERVICED APU OIL 3 PINTS PPH .089 WITHIN LIMITS INTERROGATED ECU NO LOP FAULTS.Aug 22, 2006 · N586HA · Boeing 767300SDR HALA0600608Check Valve · malfunctionedETOPS SIGNIFICANT SYSTEM, APU AUTO SHUT DOWN, INTERROGATED ECU FOUND REVERSE FLOW FAULT. PER FIM 49-11-00 APU CHECK VALVE BAD , REPLACED APU CHECK VALVE PER M/M 36-11-11.Aug 22, 2006 · N586HA · Boeing 767300SDR AMTA200600508Ecu · unserviceableAPU SHUTDOWN AFTER ARRIVING AT GATE, WOULD NOT REST ART. IAW FIM, BLOCK 26, REPLACED APU ECU IAW AMM. PERFORMED 4 SUCCESSFUL STARTS. PERFORMED ECU BITE. NO FAULTS NOTED. (K)Aug 10, 2006 · N560TZ · Boeing 75733NSDR HALA0600541Apu · malfunctionedETOPS SIGNIFICANT SYSTEM - APU SHUTDOWN AT GATE.//ACCOMP APU ECU BITE PER FIM 49-11-00. NO FAULTS NOTED. NORMAL RESTART OF APU, OPS CK GOOD. OK FOR SERVICE.Aug 5, 2006 · N581HA · Boeing 767300SDR DL764060639Apu · shutdownAPU AUTOSHUTDOWN NO ACEL. REPLACED APU.Jul 31, 2006 · N839MH · Boeing 767432ERSDR QXEA200602014Smoke · detectedSEA - APU DID NOT START AFTER ARRIVAL. RAMPERS REPORTED -SMOKE OR FOG- AND FLUID DRIPPING FROM APU BAY. MAINTENANCE CHECKED APU OIL LEVEL AND REPLENISHED AS NECESSARY IAW Q400 AMM 49-90-00, TASK 49-90-00-612-801. NO FAULTS IN CDS. STARTED IN APU AND CHECKEJul 25, 2006 · N416QX · Bombdr DHC8402SDR CALA0600259Apu · fireAPU TAIL PIPE FIRE. REPLACED IGNITION UNIT AND EXCITER AND COMBUSTION CHAMBER PER 49-31-42.Jul 19, 2006 · N17627 · Boeing 737524SDR DXTA200601473Apu · unknownAFTER DEPARTURE FROM SBA, APU IS VENTING EXESSIVE AMOUNTS OF OIL CAUSING SMELL OF SMOKE OIL COMING THROUGH COCKPIT WEEMAC VENTS, DIVERTED TO VNY. ACCOMPLISHED OPERATIONAL CHECK OF APU AND FOUND OK IAW HAWKER 800XP M/M PER CHAPTER 49-11-00. CK'D OK CHECKS APUJul 1, 2006 · N858QS · Raythn HAWKER800XPSDR AALA20060414Control Valve · inoperativeDFW - INFLIGHT HAD APU FIRE DETECTION SYSTEM ALARM. BOTH FIRE BOTTLES ACTIVATED AND USED. LANDED DFW WITHOUT INCIDENT. FOUND RUBBER BOOT ON SURGE CONTROL VALVE LEAKING ONTO FIRE LOOP. TIGHTENED BOOT AND REPLACED BOTH FIRE BOTTLES. SYSTEM GROUND CHECKED NOJun 25, 2006 · N493AA · Doug DC982SDR DXTA200601448Apu · inoperativeON GROUND AT HPN AFTER RIGHT ENGINE START SMOKE STARTED BLOWING OUT OF BOTH COCKPIT GASPERS. PAX AND CREW OVERHEAD ANNUNCIATORS ILLUMINATED AFTER ENGINE SHUTDOWN SMOKE DISAPPEARED AND APU BLOWS NORMAL AIR. REMOVED AND REPLACED APU P/N 3800548-2, S/N P-387 WIJun 20, 2006 · N226QS · Amd FALCON2000SDR DL76P070738Apu · malfunctionedAPU SHUTDOWN IMMEDIATLY WHEN PACKS WERE TURNED OFF PRIOR TO ENG START. APU DID NOT RESTART UNTIL 3RD ATTEMPT. APU OPS NORMAL AFTER RESTART ELEC AND AIR OKAY NO HISTORY.Jun 15, 2006 · N140LL · Boeing 767332SDR AMTA200600399Indication Sys · malfunctionedWITH APU ON SPEED, THE APU GEN OFF BUSS LIGHT DOES NOT ILLUMINATE. T/S IAW FIM, APU GEN OFF BUSS LIGHT OPERATES NORMAL, NO FAULTS NOTED. (K)Jun 14, 2006 · N317TZ · Boeing 73783NSDR AMTA200600394Indication Sys · malfunctionedAPU GEN OFF BUSS LIGHT NOT ON, APU SPEED AT 95 PERCENT. PERFORMED RESET IAW FIM. NO DEFECTS NOTED. (K)Jun 12, 2006 · N317TZ · Boeing 73783NSDR AMTA200600377Switch · unserviceableAPU FAULT LIGHT ILLUMINATED AND APU SHUTDOWN. PERFORMED BITE CHECK ON APU ECU AND READ (FILTER SW (GEN))LIGHT. IAW FIM, REMOVED AND REPLACED DELTA P SWITCH IAW MM. NO FAULTS NOTED. (K)Jun 2, 2006 · N550TZ · Boeing 75733NSDR DL757060429Apu · shutdownAFTER PASSING THROUGH FL 360, APU QUIT WITH FAULT LIGHT AND WOULD NOT RESTART SINGLE GENERATOR. OPS ON RETURN TO ATL DUE TO LEFT ENG GENERATOR INOP ON MCO AND PLACARD. SERVICED APU OIL TO FULL. ECU BITE SHOWED OVERSPEED FOR AUTO SHUTDOWN. T/S PER FIM 49-11May 25, 2006 · N657DL · Boeing 757232SDR QXEA200601294Circuit Breaker · trippedSEA - ON FLIGHT 2469 RETURN TO GATE, APU SHUTOFF VALVE FAIL. APU PUMP CAUTION MESSAGE. MAINTENANCE CYCLED BREAKERS. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.May 22, 2006 · N600QX · Cndair CL6002C10SDR 06FDEA1966Apu · fireDURING MTC WALKAROUND, FOUND FLAMES COMING FROM FLOW MULT FRESH AIR INLET. IMMEDIATELY SHUTDOWN APU, AND EXTINGUISHED FIRE, FIRED APU FIRED PERFORMED APU START USING ALT FIRE PROT, WITH NO DEFECTS. TURNED ON ENG NR 2 BLEED AIR AND WITHIN 30 SEC. BLEED AIR TMay 18, 2006 · N462FE · Boeing 727225SDR DL76G060349Unknown · unknownNO DUCT PRESSURE WHEN APU BLEED SELECTED TO SUPPLY PNEUMATICS. FWD TO MCO AND PLAC PER MEL 49-11-01C. PERFORMED ECU BITE PROCEDURE. NO FAULTS OR MINI-FLAGS. RAN A BLEED VALVE OPS OK. PRESSURE NORMAL.May 1, 2006 · N1608 · Boeing 767332SDR AMTA200600288Annunciator · warning light(APU BAT CHGR) ANNUNCIATOR IS ON WHEN THE ECS PAGE IS SELECTED ON EICAS. PERFORMED FIM, NO DEFECTS NOTED AT THIS TIME. (K)Apr 22, 2006 · N514AT · Boeing 75723NSDR 2006UALA00731Apu · failedRETURNED TO DEN DUE TO INOPERATIVE GEN & LOSS OF APU EN ROUTE. APU NO START DUE TO LOW OIL PRESSURE. APU GENERATOR HOUSING CRACKED AT 12:00 POSITION. APU SHARES OIL SYS WITH GEN. LOSS OF OIL FROM CRACKED GEN HOUSING CAUSED INSUFFICIENT OIL LEVEL IN APU REApr 18, 2006 · N529UA · Boeing 757222SDR UPS06646687A/C Pack · odorSLIGHT SMELL FROM A/C PACKS LEFT PACK WORSE THAN RIGHT PACK. REPLACED COOLING FAN ASSY PER 49-51-03-4 LK OPS CK GOOD. T/S PER 21-00-21-2 THIS CLEARS M323286.Apr 14, 2006 · N303UP · Boeing 76734AFSDR AMTA200600275Fuel Control · malfunctionedAFTER LANDING APU FAULT LIGHT, NO START TRIED AGAIN. NO START TRIED AGAIN AT GATE, STARTED OK. REMOVED AND REPLACED APU FUEL CONTROL UNIT IAW MM. OPS NORMAL NO LEAKS NOTED. (K)Apr 8, 2006 · N514AT · Boeing 75723NSDR COMA0660273Apu · warning lightFLIGHT 5436 - APU FAULT CAUTION MESSAGE. APU AUTO SHUTDOWN ON GROUND. DEFERRED APU.Mar 23, 2006 · N958CA · Cndair CL6002B19SDR ZN3R570495Apu · shutdownAPU. N793 HAD AN ENGINE GENERATOR INOPERATIVE AND WAS FLYING WITH THE APU PROVIDING SECOND SOURCE OF ELECTRICAL POWER PER THE MEL. WHEN ITS APU SHUTDOWN IN-FLIGHT, THE AIRCRAFT HAD TO MAKE A DIVERSION TO THE CLOSEST AIRPORT.Feb 24, 2006 · N793 · Boeing 737SDR ZN3R200601Apu · failedAPU N793 HAD AN ENGINE GENERATOR INOPERATIVE AND WAS FLYING WITH THE APU PROVIDING SECOND SOURCE OF ELECTRICAL POWER PER THE MEL. WHEN ITS APU SHUTDOWN IN-FLIGHT, THE AIRCRAFT HAD TO MAKE A DIVERSION TO THE CLOSEST AIRPORT.Feb 24, 2006 · N793 · Luscom 8ESDR QXEA200600493Apu · malfunctionedPDX FLIGHT NR 2335 - APU STARTED NORMALLY AND RAN WITH GENERATOR SUPPLYING POWER, BUT WHEN BLEED AIR WAS SELECTED, APU AUTO SHUTDOWN AND FAIL MESSAGE APPEARED ON APU CONTROL PANEL. RAN EA/CHECKLIST AND RESTORED APU STARTED NORMALLY. MAINTENANCE RAN APU WITH Feb 17, 2006 · N405QX · Bombdr DHC8402SDR CA060220003Screen · damagedA COMPRESSOR INLET SCREEN MODIFICATION, AWI RECEIVED INFORMATION FROM STANDARD AERO LATE ON FEB 16,2006 THAT THREE OR FOUR OF THE SCREENS HAD RUPTURED IN SERVICE AND THERE WAS A POSSIBILITY THAT FOD TO THE ENGINE HAD OCCURRED. THE PARTS WERE SHIPPED TO AWI ANFeb 16, 2006SDR 2006UALA00269Apu · malfunctionedDIVERTED, APU AUTO SHUT DOWN & DEFERRED GENERATOR. APU 1660 HAS NO HISTORY SINCE INSTALLATION - FIRST HIT LAST SHOP VISIT 12APR05 NEW LOW OIL PRESSURE SWITCH & CONFIGURATION INSTALLED. APU HAS 661 HRS. TSHM & 890 CSHM. SFOEP CAPTURED UNIT & COMMUNICATED DFeb 12, 2006 · N471UA · Airbus A320232SDR QXEA200600446Valve · malfunctionedDEN - ON PUSHBACK FOR FLIGHT 4277 RECEIVED A -L FADEC FAULT 2- STATUS MESSAGE AND ENGINE WOULD NOT START. RETURNED, FOUND APU LOAD CONTROL VALVE CLOSED, NOT ENOUGH AIR FOR START. RECONFIGURED VALVES, ENGINE STARTED MESSAGE CLEARED. RETURNED TO SERVICE. NO Feb 9, 2006 · N605QX · Cndair CL6002C10SDR DXTA200601238Apu · malfunctionedUPON DESCENT INTO BCT, ATTEMPTED TO START THE APU TWICE. WHILE ATTEMPTING A SECOND START, SMELLED AN ELECTRICAL ODOR COMING FROM THE OVERHEAD GASPER. ABANDONED ALL FURTHER ATTEMPTS TO START APU. PERFORMED OPERATIONAL CHECKS OF THE APU AND INSPECTED APU, NO Feb 9, 2006 · N983QS · Cessna 750SDR GUUA02080603Pressure Switch · leakingDURING CLIMB RIGHT AIR CONDITION PACK STUCK IN THE HEAT SETTING. CREW NOTICED OVERHEAT ODOR. RETURNED TO NAS. REPLACED APU OIL PRESSURE SWITCH.Feb 8, 2006 · N280AS · Emb EMB120ERSDR AMTA200600108Warning Light · illuminatedAPU FAIL/FAULT LIGHT ILLUMINATED. (M)Jan 31, 2006 · N304TZ · Boeing 73783NSDR A6WA200640007Apu · unknownUPON POST FLIGHT INOPERATIVE NOTED SMOKE COMING FROM APU INLET DOOR. INSPECTED APU INLET AND COMPARTMENT FOUND NO EVIDENCE OF OIL LEAK OR SMOKE. RAN APU FOR SEVERAL MINUTES, SHUTDOWN OPS CHECK NORMAL AT THIS TIME. (K)Jan 15, 2006 · N426AW · Cndair CL6002B19SDR 2006UALA00047Switch · failedFLIGHT DIVERTED DUE TO LOSS OF L GENERATOR DRIVE AND INABILITY OF INFLIGHT START ON APU. PROBLEM IS WITH APU SEL ECTOR SWITCH, IT WILL CAUSE CHRONIC NO STARTS. IF INTERNAL INTERLOCK SWITCH OPENS DURING START SEQ APU WON'T EVEN TURN UNLESS START SWITCH IS HELJan 6, 2006 · N541UA · Boeing 757222SDR DLM88050797Apu · contaminatedAIR TURNBACK, LT AFT LAV SMOKE ALARM WITH FUMES. PERFORMED OPN 5088 AND FOUND APU INLET CONTAMINATED WITH GLYCOL. PERFORMED OPN 5090 - ALT DUCT BURNOUT. ALSO CLEANED A LOT OF GLYCOL FROM 48 SECTION. RAN PACKS, NO SMOKE PRESENT.Dec 17, 2005 · N913DE · Doug MD88SDR AU510002196Apu · failed(AUS) APU AUXILIARY POWER CONVERSION AND DISTRIBUTION UNIT FAILED. SEE ATTACHMENT FOR INVESTIGATION DETAILS.(OTHER CAUSE: AGE ) (CASA NR 510002196)Dec 12, 2005 · Boeing 717200SDR MALA050877Odor · detectedAPU AUTO SHUT DOWN INFLIGHT HAD A BRIEF STRONG BURNING ODOR IN COCKPIT IT WENT AWAY AS SOON AS APU STOPPED. DEFERRED APU PER MLE 49-10.Dec 12, 2005 · N601XJ · Bombdr DHC8400SDR AU510001708Apu · inoperativeAPU FAILED TO START. INVESTIGATION CONTINUING.Dec 8, 2005 · Fokker F28MK0100SDR MASA200500924Apu · unknownASH 2642 CLT - FIRE/SMOKE IN FWD LAV. MAINTENANCE REMOVED AND REPLACED APU.Nov 20, 2005 · N921FJ · Cndair CL6002D24SDR DL75K050715Ecu · inoperativeOFF LT IN GEN CONT SWITCH. ATTEMPTED ONE RESET. GEN OFF LIGHT RE-ILLUMINATED. DURING CLIMBOUT APU LIGHT, ATTEMPTED ONE RESTART APU RPM 103 PERCENT AND APU FAULT THE SECOND TIME. T/S PER FIM. PERFORMED BITE ON ECU AND FOUND OVERSPEED ON APU NOT OPERATING. Nov 17, 2005 · N6707A · Boeing 757232SDR BB05095Idg · failedAPU SHUTDOWN IN FLIGHT WHILE THE LEFT IDG WAS ALREADY ON MEL. MAINTENANCE PLACED THE APU ON MEL AND CLEARED THE LEFT IDG MEL BY REPLACING THE IDG.Oct 29, 2005 · N633AU · Boeing 757225SDR DXTA200501012Apu · odorTEN SECONDS AFTER STARTING THE APU ON SHORT FINAL, RECEIVED A MASTER WARNING AND SMELLED A HOT ELECTRICAL ODOR AND THE APU DID NOT AUTO SHUTDOWN. SHUTDOWN THE APU MANUALLY, THE ODOR WENT AWAY. ITEM IS UNDER INVESTIGATION.Oct 9, 2005 · N893QS · Raythn HAWKER800XPSDR DL757050552Apu · smokeLIGHT SMOKE VISABLE IN COCKPIT DURING TAXI IN. SEEMED TO APPEAR AFTER BLEED SOURCE SWITCHED TO APU. UNABLE TO DUPLICATE OR LOCATE FAULT.Sep 16, 2005 · N683DA · Boeing 757232SDR COMA0570103Apu · faultyFLIGHT 4989 - RECEIVED A FORWARD LAVATORY SMOKE WARNING MESSAGE DURING TAKEOFF ROLL, FLIGHT RETURNED TO GATE. REPLACED THE APU.Sep 16, 2005 · N367CA · Cndair CL6002C10SDR 2005UALA00976Sensor · unknownFLIGHT LOST APU. *S/D* LT IDG WAS INOPED 09SEP05. THE RT IDG WAS INOPED, REPLACED. ON 10SEP05 THE APUC GAVE THE MSG COMPLETE LOSS OF APUC BUS ACTIVITY (BOTH LT AND RT 629) FOR 3 SECONDS AFTER THE APU MASTER CONTROL SWITCH HAS BEEN IN THE ON POSITION FOR TESep 10, 2005 · N796UA · Boeing 777222SDR MWEA050100Apu · overtempTAIL COMPARTMENT HIGH LIGHT CAME ON. FOUND AUXILIARY POWER UNIT CONTROL VALVE LEAKING AND HOIST ACCESS PANEL OFF AND HOT AIR BLOWING OUT. REINSTALLED HOIST PANEL, VERIFIED LEAK AT V BAND CLAMP ON LOAD CONTROL OUTLET DUCT. REMOVED AND INSPECTED CLAMP, NO DEFSep 2, 2005 · N810ME · Doug DC982SDR 2005UALA00657Apu · inoperativeRETURNED TO THE FIELD AT SFO AFTER THE APU WOULD NOT START AT TOP OF CLIMB. APU WAS REMOVED FROM AIRCRAFT AND TESTED IN APU TEST CELL. NO FAULT FOUND WITH APU S/N 61832. PASSED ALL TEST AND RETURNED TO SERVICE. AFTER APU REPLACEMENT, MECHANIC FOUND APU BATTJul 13, 2005 · N596UA · Boeing 757222SDR CA050706007Blower · failed(CAN) WHEN APU ON AND APU STARTER/GEN PUT ONLINE (GENERATOR ON). THE APU STARTER/GENERATOR WOULD COME OFFLINE AFTER ABOUT 3 SECONDS AND APU WOULD SHUT DOWN. DURING INVESTIGATION, THE MECHANIC FOUND THE APU COOLING FAN BLADES MISSING, ALL THE BLADES WERE BROKEJun 29, 2005 · Cessna 650SDR ASMF200506028Apu · malfunctionedAIRCRAFT RETURNED TO PLATFORM AS A CONSEQUENCE OF APU DID NOT SUPPORT PNEUMATIC CHARGES FOR ENGINE STARTING. GPU WAS CONNECTED TO ENGINES STARTING AND APU WAS DEFERRED IAW MEL 49-1. DURING OVERNIGHT SERVICE APU WAS TESTED IAW MPCM 49-00-01 SETTING BOTH ENGINJun 28, 2005 · N169PL · Doug MD88
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