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 2007UALA02621Charger · faultyEICAS STATUS MESSAGES, APU BATTERY, APU BATTERY CHARGER. [08-07-07] REPLACED APU BATTERY AND APU CHARGER. AIRCRAFT READY FOR SERVICE.Jul 13, 2007 · N796UA · Boeing 777222SDR 2007UALA02540Apu · unknownAPU POWER PROBLEMS. [08-08-07] REPLACED APU GENERATOR TRANSFORMER T2 AS A PRECAUTION. OPERATIONAL CHECKS NORMAL.Jul 11, 2007 · N924UA · Boeing 737522SDR DL76G070904Unknown · unknownAFTER STARTING APU DUCT PRESS NEVER ROSE ABOVE 10 PSI WITH PACKS OFF. SHUT DOWN AND RESTARTED WITH NO SUCCESS. REPLACED TOTAL PRESSURE SENSOR, NO HELP. APU EGT AT 522 DEG C. IN DUCT PRESSURIZATION MODE. PER FIM AND APU SHOP 500 DEG C MAX NEEDS APU. REMJul 3, 2007 · N152DL · Boeing 7673P6SDR DL76L070838Unknown · unknownAPU FAULT AND SHUTDOWN ON ENGINE START. BITE CHECK OF APU ECU SHOWS NO FAULTS, APU SHUTDOWN OCCURRED ON ENGINE START WITH AIR DEMAND. FWD APU PNEU TO MCO PER MEL49-11-01C. ECU SHOWS NO FAULTS. REPLACED SCV AS PREVENTIVE MEASURE PE M/M. MOTORED ENG 2 TIMES Jun 30, 2007 · N1200K · Boeing 767332SDR QXEA200701069Relay · malfunctionedPDX - FLIGHT 2575, RETURNED TO THE GATE FOR THE APU BATTERY POPPED THE CIRCUIT BREAKER AFTER ENGINE START. MAINTENANCE REPLACED THE K101 RELAY. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.Jun 27, 2007 · N604QX · Cndair CL6002C10SDR SA07042Pressure Switch · inoperativeMCO FLT 1576 EN ROUTE FLL TO CLT - DURING ORIGINATION OF FLIGHT, THE NUMBER ONE GENERATOR FAILED. THE FLIGHT CONTINUED WITH THE APU GENERATOR ON-LINE, AND ALTITUDE RESTRICTIONS. WHILE STILL SOUTH OF MCO, THE APU AUTO-SHUTDOWN WITH AN -LP FUEL VALVE FAULT-.Jun 20, 2007 · N117UW · Airbus A320214SDR 2007UALA02134Battery · malfunctionedAT DEPARTURE -BAT CHARGER APU- AGAIN. WOULD NOT CLEAR. [07-20-07] REPLACED BATTERY WITH NEW PER MM24 -31-06 PG401. MESSAGE CLEARED. OK FOR SERVICE.Jun 19, 2007 · N107UA · Boeing 747422SDR 2007UALA02079Apu · smokeAPU SMOKING FROM TAIL PIPE. [07-17-07] REPLACED APU PER MM 49-11- 01. SUSPECT APU INTERNAL OIL LINE LEAK CAUSED SMOKE.Jun 17, 2007 · N219UA · Boeing 777222SDR 2007UALA02064Apu · fireON APU START, FLAMES REPORTED COMING OUT OF REAR OF AIRCRAFT. APU SHUT DOWN WITH FAULT LIGHT. [07-06-07] REFERENCE SERVICE TIP 49-00-02 PG 200A. PROBABLE CAUSES ARE IF THE APU HAS BEEN SHUTDOWN FOR A TIME LESS THAN ONE HOUR OR IF THE PRE-START EXHAUST GJun 17, 2007 · N919UA · Boeing 737522SDR 2007UALA02053Apu · faultyCREW REPORTS APU FLAMED OUT AT DEPARTURE TIME. FIRE CARGO AFT EICAS MSG CAME ON AFTER APU FAILED. [07-27-07] AFTER SEVERAL APU SHUT-DOWNS & ABORTED STARTS, CONDUCTED CICADA CHECK OF INLET SCREEN. CLEANED OFF LOT OFF DEAD BUGS. 10% BLOCKAGED LWR PARTS OJun 17, 2007 · N175UA · Boeing 747422SDR A6WA200740310Apu · smokeAFTER TRANSFERRING BLEEDS TO APU, THERE WAS A FAINT ODOR IN THE COCKPIT, ENGINES AT IDLE, (SMOKE TOILET) MESSAGE ON ED 1. MESSAGE CLEARED ON RUNWAY. FA REPORTS SMOKE AT CEILING AT ROW 11 AND 12. REPORTS SMOKE AT CEILING AT ROW 11 AND 12 REMOVED AND REPLACEDJun 16, 2007 · N433AW · Cndair CL6002B19SDR 2007UALA02022Control Unit · malfunctionedAPU AUTO SHUTDOWN AFTER PUSHBACK. RESTART WAS NORMAL, BUT HAS HISTORY. [07-20-07] REPLACED APU CONTROL UNIT PER MM 49-61-05 AND P2 SENSOR PER MM 49-61-04. CK'D P2 SENSOR LINE FOR OBSTRUCTION, NONE FOUND. RAN APU FULLY LOADED WITH ELEC AND PNEUMATICS. NO FAUJun 15, 2007 · N658UA · Boeing 767322SDR SWIA200718346Power Unit · smokeAPU BLEED AIR IS CAUSING SMOKE IN THE COCKPIT. REPLACED APU WITH SERVICEABLE UNIT IAW EMB MM 49-00-02, P/N 3800376-1, S/N OFF: P0445.Jun 10, 2007 · N581SW · Emb EMB120ERSDR AMTA200700279Apu · unknownCAPT BRIEFED APU SHUTDOWN TWICE, APU FAULT MSG. (MX MSG) REPLACED APU IAW W/C M57-49-02 AND 49-11-01-4. OPS AND LEAK CHECK GOOD. (K)Jun 8, 2007 · N522AT · Boeing 75723NSDR AMTA200700278Unknown · unknownAPU AUTO SHUTDOWN. NO FAULT LIGHT ILLUMINATED. MSG FCU DISAGREE WITH COMMAND 49-31171 FAULT CLEARED AFTER APU RESTART. FOUND FUEL QUANTITY LOW. (K)Jun 6, 2007 · N308TZ · Boeing 73783NSDR MASA200700300Actuator · malfunctionedASH 2844 PHX - APU OVERTEMP, FOLLOWED BY APU FIRE, CREW FOLLOWED CFM CHECKLIST, APU FIRE CHANGED TO APU FAULT. REMOVED AND REPLACED DIFFUSER CG ACTUATOR.Jun 3, 2007 · N37228 · Cndair CL6002B19SDR 2007UALA01537Actuator · damagedAPU DOOR C/B POPPING. [06-14-07] FOUND DAMAGED WIRES & REPAIRED SAME: PROBLEM PERSISTS. REPLACED APU INLET DOOR ACTUATOR PER MM 49-15-06-0401. OPS CKS GOOD. SUSPECT INTERNAL SHORT IN DOOR ACTUATOR DUE TO DIRT & VIBRATION.May 17, 2007 · N654UA · Boeing 767322SDR HALA0700204Unknown · unknownETOPS SIGNIFICANT SYSTEM, APU AUTO SHUT DOWN AS PACKS WERE TURN OFF FOR ENG START. PERFORMED FIM 49-11-00 FIG 103 APU BITE, NO FAULTS NOTED. OK FOR SERVICE.May 9, 2007 · N588HA · Boeing 767300SDR 2007UALA01418Apu · faultyAPU AUTO SHUTDOWN & FILLED ENTIRE CABIN WITH SMOKE. ALSO, SAW SMOKE COMING OUT OF TAILPIPE. [SUP 06-01-07] REPLACED APU. RESTARTED APU NORMALLY, INDICATIONS NORMAL. OPERATED PACKS AND NO FURTHER SMOKE OR ASSOCIATED OIL SMELL IN CABIN. A/C RETURNED TO SERVIMay 5, 2007 · N117UA · Boeing 747422SDR QXEA200700718Apu · odorPDX - CABIN HAS A "DIRTY SOCK" ODOR. MAINTENANCE REPLACED THE APU IAW AMM 49-10-00-000-801-A01. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.May 3, 2007 · N290RB · Cndair CL6002C10SDR QXEA200700690Charger · malfunctionedPDX - FLIGHT 2561 - RETURN TO THE GATE FOR A APU BATTERY CHARGER STATUS MESSAGE. MAINTENANCE REPLACED THE BATTERY CHARGER. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.Apr 29, 2007 · N614QX · Cndair CL6002C10SDR HNAA0700059Apu · smokeBURNED PLASTIC ODOR ON FLIGHT DECK AND CABIN ALONG WITH A HAZE. RAN BOTH ENG FOR TWO HOURS, NO SMOKE IN BLEEDS, EXCESSIVE SMOKE OBSERVED WITH APU RUNNING HOT OR COLD. DEFERRED APU AT THIS TIME.Apr 11, 2007 · N805EX · Dhav DHC8102SDR HALA0700165Apu · failedETOPS SIGNIFICANT SYSTEM, APU SHUTDOWN ON GATE. NOTED ALSO WITH BELLOWING SMOKE OUT OF TAILPIPE AND LOSS OIL QTY.//REPLACED APU HAL IAW SPM AND HAL M-266-767 FORM. OPS AND LEAK CHECK GOOD.Apr 10, 2007 · N583HA · Boeing 767300SDR 2007UALA01096Gear · failedAPU HAD SHUTDOWN, FAULT LIGHT ILLUM AND EICAS MSG. APU FAULT DISPLAYED. APU REMOVED FROM AIRCRAFT FOR METAL ON CHIP DETECTOR. COMPOUND GEAR IN GEARBOX FAILED AND CAUSED AUTO SHUTDOWN. GEARBOX AND COOLING FAN TSHM=6337 HRS AND CSHM=8381.Apr 8, 2007 · N589UA · Boeing 757222SDR DXTA200702075Apu · odorAPU GIVES OIL ODOR IN CABIN. NO DIVERSION. REMOVED AND REPLACED APU IAW FALCON 2000 MM 49-00, OPS CHECK APU GOOD.Apr 3, 2007 · N265QS · Amd FALCON2000SDR C2XA07IA077Apu · odorSTL - FLIGHT 3153, DURING PREFLIGHT INSPECTION THE CREW REPORTED A SMOKEY ODOR IN THE GALLEY. MAINTENANCE INSPECTED THE AIRCRAFT AND PLACED THE APU ON MEL 49-00-00 CAT C CONTROL 118810, AND THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE. 10-9-07 ON 04/05/Apr 2, 2007 · N22909 · Emb EMB145LRSDR CA070404011Apu · failed(CAN) TECHNICIAN WAS TROUBLESHOOTING THE APU FOR APU AUTO SHUTDOWN, LOSS OF APU DOOR POSITION ON STATUS PAGE. ECU CODE: 109,224,91 MAINTENANCE FOUND THE ELECTRICAL CONNECTOR FOR OIL TEMP SENSOR PARTIALLY INSTALLED ( CODE 91). RESECURED THE CONNECTOR AND PROCMar 30, 2007 · Cndair CL6002B19SDR A6WA200740151Apu · failedAPU FAULT MESSAGE AND FAINT ODOR OF SOMETHING BURNING AT GATE, APU EGT NOTED IN RED. APU WAS SUPPLYING BLEEDS AND ELECTRICS. REMOVED AND REPLACED APU ASSEMBLY. (M)Mar 21, 2007 · N437AW · Cndair CL6002B19SDR CA070314017Apu · malfunctioned(CAN) CREW MADE A NORMAL APU START REQUEST, A FEW SECONDS LATER HEARD A LOUD BANG AND GOT THE APU FAIL ADVISORY LIGHT. APU ENCLOSURE SUFFERED STRUCTURAL DAMAGE AFTER FUEL VAPOR IGNITED. NO FIRE LIGHT OR FIRE NOTED. EXAMINATION OF APU COMPARTMENT AREA REVEALEDMar 12, 2007 · Bombdr DHC8400SDR HALA0700099Housing · crackedETOPS SIGNIFICANT SYSTEM, FOUND APU GENERATOR HOUSING CRACK. REMOVED AND REPLACED APU GENERATOR, PER AMM 24-21-01. OPS CHECK AND LEAK CHECK GOOD.Mar 9, 2007 · N582HA · Boeing 76733ASDR DL76L070190Apu · contaminatedATB - CREW REPORTED SMOKE IN CABIN ALONG WITH SMOKE DETECTOR SOUNDING IN MID LT LAV. RAN BOTH ENGS AT POWER. COULD NOT DUPLICATE WITH ENG BLD WITH APU BLEED ODOR SENSED IN CABIN. REPLACED APU PER JIC 7952. RAN APU NO LEAKS NOTED AIR AND GEN OPS NORMAL.Mar 6, 2007 · N185DN · Boeing 767332SDR 2007UALA00661Apu · shutdownAPU AUTO SHUTDOWN AFTER APPROX 15-20 MINS OF OPERATION. ALL CHIP DETECTORS ARE OKAY AND NOTED OIL SYSTEM EXTREMELY HOT. [5-1-07] HISTORY SHOWS COOLING FAN AND OIL COOLER RECENTLY REPLACED. REPLACED APU.Mar 2, 2007 · N546UA · Boeing 757222SDR HALA0700060Unknown · unknownETOPS SIGNIFICANT SYSTEM, APU WILL NOT START. BITE CHECKED ECU, NORMAL SHUTDOWN NOTED. NO DATA PREVIOUS STARTS. CLEARED AND STARTED APU. OPS CHECK GOOD. VERIFIED START SWITCH OPERATES NORMALLY W/NO DEFECT NOTED.Feb 24, 2007 · N584HA · Boeing 767300SDR HALA0700059Control Panel · malfunctionedETOPS SIGNIFICANT SYSTEM, APU START SWITCH SPRING DEFECTIVE. WILL NOT SPRING BACK TO "ON" FROM "START" OTHERWISE OPERATES NORMAL. REPLACED APU CONTROL PANEL PER AMM 49-41-81-004-001. INSTALLED APU CONTROL AMM49-41-81-404-007. OPS CHECK GOOD SECURITY CONDITFeb 23, 2007 · N584HA · Boeing 767300SDR HALA0700054Unknown · unknownETOPS SIGNIFICANT SYSTEM - BTB - APU SHUTDOWN ON PUSHBACK, PRIOR TO ENG START. ECU SELF TEST PER FIM 49-11-00. TEST OK NO FAULTS OK FOR SERVICE.Feb 22, 2007 · N587HA · Boeing 76733ASDR AALA20070300Apu · smokeORD INFLIGHT T2455 - FOUND SMOKE AND FUMES IN CABIN AFTER TAKEOFF. REPLACED APU AND PERFORMED PACK BURN OUT. SYSTEM GROUND CHECKED NORMAL OPERATION.Feb 8, 2007 · N7535A · Doug DC982SDR AMTA200700051Unknown · unknownAPU AUTO SHUTDOWN DUE TO LOW OIL QTY APPROX 2 HOURS IN TO FLIGHT. INSPECTED APU OIL FILLER CAP, ALL LINES AND TAIL PIPE FOR SIGNS OF LEAK AND NO LEAKS WERE FOUND. RAN APU FOR 4 HOURS AND NO LEAKS WERE NOTED. PERFORMED BITE AND NO FAULTS FOUND. (M)Feb 1, 2007 · N552TZ · Boeing 75733NSDR AMTA200700048Unknown · unknownAPU LIGHT ON WHEN RECALL PUSHED WHEN APU IS RUNNING. PERFORMED MASTER CAUTION RESET PER FIM 31-52-00-810-801. FAULT CLEARED, NO FURTHER DEFECTS NOTED. (M)Feb 1, 2007 · N317TZ · Boeing 73783NSDR DXTA200802817Ecu · inoperativeDURING APU SHUTDOWN FLAMES WERE COMING OUT OF EXHAUST, NO FIRE WARNING LIGHTS OR MSG OF ANY KIND. OPENED UP APU FIRE SWITCH AND DISCHARGED RT FIRE BOTTLE INTO APU, FIRE EXTINGUISHED. M2B- INSPECTED APU AND TAIL CONE AREA FOR DAMAGE NONE NOTED. PERFORMED ALERJan 31, 2007 · N725QS · Gulstm 200SDR DL76G070063Apu · unknownC HYD DEMAND DURING FLAP OPERATION, USING APU AIR, APU AIR FWD TO MCO 49-11-01C. CHECKED APU PRESS. PRESS SHOW 36PSI. RAN BOTH PACK PRESS OK. RAN ADP OPS OK. EXT RETRACT FLAPS NO MSG. MCO AND PLACARD REMOVED.Jan 29, 2007 · N155DL · Boeing 7673P6SDR QXEA200700120Unknown · unknownPSP - FLIGHT 2580, AT PUSHBACK RECEIVED A APU LOAD CONTROL VALVE OPEN CAUTION MESSAGE. RETURNED TO THE GATE. MAINTENANCE RESET ALL CIRCUIT BREAKERS. AIRCRAFT RETURNED TO SERVICE. NO PARTS REPLACED.Jan 29, 2007 · N600QX · Cndair CL6002C10SDR TSAA0749011Apu · shutdownAIRCRAFT GROUND EVENT IN KOA. THE APU AUTO SHUTDOWN FOR LOW OIL PRESSURE INDICATION. MAINTENANCE VISUALLY CHECKED OIL LEVEL AND VERIFIED AT FULL. THE APU WAS RESTARTED AND RAN NORMAL WITH NO DEFECTS NOTED. AIRCRAFT WAS RETURNED TO SERVICE.Jan 27, 2007 · N738AL · Boeing 73773ASDR CA070128002Apu · contaminated(CAN) SHORTLY AFTER DEPARTURE, THE CREW NOTICED A LAV SMOKE WARNING AND SMOKE WAS VISIBLE IN THE CABIN FOR 3-4 MINUTES THEN IT DISSIPATED. SMOKE WAS BLUISH IN COLOR AND OILY SMELLING. (2) MAINTENANCE PERSONNEL WERE ON BOARD, INITIALLY THEY THOUGHT SINCE THE AJan 26, 2007 · Cndair CL6002B19SDR TSAA0749009Apu · shutdownAIRCRAFT GROUND EVENT IN OGG, THE APU AUTO SHUTDOWN FOR LOW OIL PRESSURE INDICATION. MAINTENANCE COMPLIED WITH FIM TASK 49-90-00-810-803. INSPECTED THE LOW OIL PRESSURE SWITCH AND THE OIL DELTA P INDICATOR WITH NO DEFECTS NOTED. APU OPERATED NORMAL WITH ALLJan 26, 2007 · N738AL · Boeing 73773ASDR HALA0700034Apu · unknownBTB - ETOPS SIGNIFICANT SYSTEM, APU SHUT DOWN ON PUSH BACK. PERFORMED FIM 49-11-00 AND REVERSE FLOW FAULT ERASE BOX. PERFORMED BIT TEST. NO FAULTS NOTED. START APU OK. OK FOR SERVICE.Jan 23, 2007 · N592HA · Boeing 767300SDR AMTA200600750Apu · failedAPU FAILED TO START FAULT LGT ILLUM AND EICAS MSG APU FAULT DISPLAYED APU START NORMAL 2ND ATTEMPT. APU FAULT RESET. ECU BITE CARRIED OUT, NO FAULT FOUND. APU STARTED SEVERAL TIMES AND OPS NORMAL. (K)Dec 28, 2006 · N522AT · Boeing 75723NSDR 2006UALA02372Duct · contaminatedRETURNED TO THE FIELD DUE TO SMOKE IN THE CABIN. AFTER RETURN TO GATE FOR SMOKE IN CABIN BEGAN CLEANING APU BLEED COMPONENTS AND DUCTS. FOUND AND CLEANED OIL IN DUCTS AS FAR AS APU FIRE BOTTLE ACCESS DOOR. NEED TO CHECK DUCTS THRU AFT BODY ACCESS DOOR FOR ADec 13, 2006 · N507UA · Boeing 757222SDR HALA0600781Bleed Air Sys · inoperativeBTB NO APU BLEED AIR. DEFERRED APU PNEU PER MEL.Oct 1, 2006 · N592HA · Boeing 767300SDR MASA200602369Clamp · looseASH 7155 IAD - CREW REPORTED THAT WHILE INBOUND APU OVER TEMP MESSAGE OCCURRED FOLLOWED BY AN APU FIRE FAIL MESSAGE WHICH WAS FOLLOWED BY AN APU FIRE WARNING. CREW ENGAGED THE FUEL SOV AND MESSAGE CLEARED. MX INSPECTED THE APU AND FOUND NO EVIDENCE OF AN ACTUSep 28, 2006 · N37342 · Cndair CL6002B19SDR 200609261Apu · odorCREW NOTICED SMOKE IN THE CABIN AFTER APU STARTED. ORD MX WAS THEN ABLE TO DUPLICATE PROBLEM BUT IT WAS NOT SMOKE LIKE THE CREW CALLED, BUT A STRONG ODOR IN THE CABIN DURING APU START. WHEN APU WAS SHUTDOWN THE ODOR WENT AWAY. APU WAS CAUSING ODOR IN CABIN DUSep 22, 2006 · N647RW · Emb ERJ170100SE
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