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 C2XA05CL050Apu · odorDURING ROUTINE MAINTENANCE, OIL ODOR IN CABIN WAS NOTED WHEN APU BLEED WAS SELECTED. MX RELEASED ACFT IAW MEL 49-00-00. MX REPLACED APU. OPS CHECKS WERE GOOD.Jun 19, 2005 · N14933 · Emb EMB145ERSDR DXTA200500762Apu · smokeTAXIING FOR T/O ENGINES RUNNING, APU & BLEED AIR ON, ALL AVIONICS ON, THE CABIN & COCKPIT FILLED WITH SMOKE. SMOKE STOPPED WHEN I SHUT EVERYTHING DOWN AND TURNED ELECTRICAL POWER OFF. A LARGE AMOUNT OF WATER DRIPPING FROM BOTTOM OF APU. INSPECTED ENGINE INTJun 10, 2005 · N665QS · Cessna 560XLSDR NOCA0605Apu · shutdownAPU SHUTDOWN WHEN LEFT PACK WAS TURNED OFF PERFORMED BITE PER FIM 49-11-00. RESET APU STARTED AGAIN OPS CHECKED NORMAL.May 26, 2005 · N750NA · Boeing 75728ASDR DLM88050258Odor · detectedBURNING SMELL IN CABIN. PERFORMED DUCT BURNOUT. NO SMELLS NOTED.May 4, 2005 · N932DL · Doug MD88SDR 2005UALA00267Idg · shutdownAPU AUTO SHUTDOWN WITH THE NR 2 IDG DEFERRED. REPLACED PRECAUTIONARY PER SFOLM THE APU OIL PRESS SWITCH, OIL SUMP TEMP SENSOR, OIL LEVEL SENSOR, AND ECB. RAN APU ON GROUND FOR ONE HOUR WITH ELEC AND PNEU LOADS NO AUTO SHUTDOWNS. APU HAD 2 PREVIOUS GRND ASD. Mar 26, 2005 · N441UA · Airbus A320232SDR SIMA200507003Apu · leakingCREW REPOARTED DURING CRUISE FLIGHT GETTIG A BAD ODOR IN THE CABIN. AIRCRAFT WAS RETURNED TO DEPARTURE. AIRCRAFT WAS LANDED SAFELY AND AN EMERGENCY EVACUATION WAS DONE ON THE TAXIWAY. REPLACED APU IAW WORK CARD 49-800-05. OPS CHECK GOOD. AIRCRAFT RETURNEDMar 20, 2005 · N733KR · Emb EMB135LRSDR SIMA7330791SApu · failedCREW NOTED JUST AFTER TAKEOFF AND IN CRUISE FLT THEY STARTED GETTING A BAD ODOR IN THE CABIN, SO THEY RETURNED TO DEPARTURE FOR MAINTENANCE. THEY LANDED SAFELY BUT DID A EMERGENCY EVAC AC ON TAXIWAY. MAINTENANCE PERFORMED INSPECTIONS OF DUCTING AND SEVERAL CMar 20, 2005 · N733KR · Emb EMB135LRSDR MASA200500202Apu · failedAN APU FAIL AND GENERATE A SMELL IN THE CABIN. MX FOUND THAT THE APU HAD SIEZED AND PLACED IT ON MEL. MAINTENANCE REPLACED THE APU.Mar 11, 2005 · N835MJ · Emb EMB145LRSDR DL73S050154Apu · smokeDURING APU START CABIN FILLED WITH SMOKE. RAN PACKS USING EXT CART, NO SMELL NOTED. STARTED ENGINES, NO SMELL WITH PACKS ON / OFF. FWD APU MCO PLACARD MEL 49-00-01A.Mar 9, 2005 · N331DL · Boeing 737232SDR DL733050137Apu · fusesCREW REPORTS FUMES IN CABIN WHILE AT THE GATE. DEPLANED PASSENGERS AND TURNED OVER TO MAINTENANCE. REPLACED APU PER MM.Feb 27, 2005 · N309WA · Boeing 737347SDR N382005F00003Gcu · burnedUPON AIRCRAFT TEST FLIGHT FOR COMPLETION OF TAWS INSTALLATION. AIRCRAFT EXPERIENCED SMOKE IN THE CABIN AND COCKPIT. CREW DECLARED AND EMERGENCY LANDING AND PERFORMED AN UNEVENTFUL LANDING, USING NORMAL PUBLISHED EMERGENCY PROCEDURE. TROUBLESHOOTING FOUND THFeb 16, 2005 · N163WG · Cndair CL6002A12SDR DL76G050085Battery · overheatedPRIOR TO DEPARTURE BURNED SMELL REPORTED IN THE BACK OF THE CABIN. MTC FOUND THE APU BATTERY HOT. REPLACED BATTERIES AND CHARGER.Feb 3, 2005 · N1608 · Boeing 767332SDR TSAA0549006Apu · noisyLOUD THUNDERING SOUND BENEATH THE AFT RIGHT FLIGHT ATTENDANTS SEAT. THE NOISE WAS INTERMITTENT AFTER 2 HOURS. THE APU ELECT METER INDICATED BLANK CPS 4 +00 INTO FLT. APU GEN OFF BUSS LIGHT ILLUMINATED. APU EGT AS 360 DEG; AMPS & VOLTS = 0. APU SHUTDOWN MAFeb 2, 2005 · N748AL · Boeing 73776NSDR 05026656Duct · contaminatedEVENT SUMMARY STATED LAV SMOKE MSG. OPERATED A/C OFF BOTH ENGINES AND APU. NOTED SLIGHT GLYCOL SMELL. REMOVED AND REPLACED SOCKS AND CLEANED EXTERNAL RESIDUE IN APU BAY. OPERATED SYSTEM AGAIN AND SMELL DISAPPEARED REF CRJ MM 21-50-00. REMOVED AND REPLACEDJan 26, 2005 · N656BR · Cndair CL6002B19SDR AALA20050042Pressure Switch · inoperativeEN ROUTE DFW-CMH RIGHT HAND CONSTANT SPEED DRIVE LOW OIL PRESSURE LIGHT ON WITH APU ON MEL. LANDED LIT WITHOUT INCIDENT. REPLACED RIGHT HAND CSD OIL PRESSURE SWITCH. SYSTEM GROUND CHECKED NORMAL OPERATION. CLOSED.Jan 20, 2005 · N59523 · Doug DC982SDR SWIA200514369Apu · smokeON INITIAL POWER UP AFTER STARTING APU AND TURNING ON PACKS BOTH PACK FAIL LIGHTS ILLUMINATED & LAV SMOKE ALARM SOUNDED. F/A NOTED SMOKE SMELL IN CABIN. COULD NOT DUPLICATE PAC FAIL. NO DISCREPANCIES IN AIR CONDITIONING SYSTEM, GASPER FANS, APU BLEED, CROSSJan 9, 2005 · N218SW · Emb EMB120ERSDR 04356649Apu · odorAFTER GEAR UP, INDICATION OF SMOKE IN THE BACK. NO SMOKE VISIBLE BUT STRONG SMELL. MX INSPECTED AC DUCTS AND CLEANED. PERFORMED ENGINE RUNS. APU STARTED AND OIL SMELL CAME BACK. APU BEING WORKED ON. MX WILL ALSO INSPECT LAV, RETURNED TO SEAT LIGHTED PLACDec 21, 2004 · N649BR · Cndair CL6002B19SDR MASA200400712Odor · detectedASH 2801 STL TO CLT. APU OIL SMELL IN BLEED AIR. MAINTENANCE COMPLIED WITH MEL PROCEDURES FOR APU AIR. 12/22 MAINTENANCE CLEANED APU.Dec 20, 2004 · N827MJ · Emb EMB145LRSDR MASA200400666Odor · detectedASH 6221 EUG - THE PILOT REPORTED AN UNUSUAL SMELL WITH THE BLEEDS ON. ON CALL MAINTENANCE WAS DISPATCHED AND TROUBLESHOT THE PROBLEM TO THE APU. MAINTENANCE PLACED THE APU ON DEFERRAL. THE AIRCRAFT CONTINUED REVENUE SERVICE. 11/30 MAINTENACE RERACKED THE Nov 29, 2004 · N924FJ · Cndair CL6002D24SDR COMA0460639Apu · odorFLIGHT 5397 AFTER TAKEOFF FROM CVG NOTICED OIL ODOR IN COCKPIT. CREW DECLARED AN EMERGENCY AND RETURNED TO THE FIELD. REPLACED THE APU.Nov 23, 2004 · N989CA · Cndair CL6002B19SDR UPS04543435Apu · failedINBOUND TO ALB APU FAILED. EMERGENCY DECLARED. IAW 24-00-1, TS PER FIM 49-11-00 FIG 103, SYS CHECK OK. CHECKED APU OIL, SYSTEM FULL. OK TO CONTINUE.Nov 3, 2004 · N420UP · Boeing 75724APFSDR COMA0460611Apu · shutdownFLIGHT 5028 APU SHUTDOWN. COULD NOT DUPLICATE. APU OPERATIONAL CHECK SATISFACTORY.Oct 31, 2004 · N952CA · Cndair CL6002B19SDR A6WA200440156Odor · detectedIN FLIGHT, STARTED APU, SMELLED JET FUEL, TURNED APU OFF- NO MESSAGES DISPLAYED. INSPECTED TAIL COMPARTMENT AND APU COMPARTMENT FOR LEAKAGE. FOUND NONE. RUNUP APU. OPS CHECK IAW MM 49-10-00. AIRCRAFT OK FOR SERVICE.Oct 16, 2004 · N450AW · Cndair CL6002B19SDR 2004UALA00851Apu · malfunctionedRETURNED TO HNL DUE TO FAILED EN ROUTE ETOPS VERIFICATION, APU ALTITUDE START. SUPPLEMENTAL DATA UPDATE, THE CAUSE OF THE FAILED ALTITUDE START WAS NOT CONFIRMED. TEST CELL FINDINGS COULD NOT REPEAT NO START EVENT. THE FOLLOWING LRU WERE ROUTED-GENERATOR OISep 25, 2004 · N673UA · Boeing 767322SDR MASA200400522Apu · fireAFTER LANDING IN YUL AND SHUTTING DOWN THE APU FOR THE NIGHT THE GROUND CREW NOTICED FLAMES EMITTING FROM THE APU EXHAUST AREA. AS GROUND CREW WAS MOVING TO NOTIFY THE CREW, THE APU FIRE WARNING ALERTED IN THE COCKPIT AND SIMULTANEOUSLY DISCHARGED THE FIRE BOSep 11, 2004 · N591ML · Cndair CL6002B19SDR SWIA200413626Relay · burnedBURNING ODOR COMING FROM F/O RELAY SIDE PANEL. REPLACED APU FEEDER PROTECTOR RELAY AND BRACKET. OPERATIONAL CHECK GOOD.Jul 26, 2004 · N293SW · Emb EMB120ERSDR DL76G040667Battery · failedCATERING REPORTED SMOKE TO F/A WENT BACK AND SMELLED SMOKE ABOUT 4 ROWS PRIOR TO THE AFT BULKHEAD. OTHER CREW MEMBERS ALSO NOTICED THE ODOR. FIRST F/A ALSO REPORTED SEEING SMOKE IN THE AFT PART OF THE AIRCRAFT. ISOLATED MAIN ODOR TO APU BATTERY OVERHEATING.Jul 18, 2004 · N154DL · Boeing 7673P6SDR C2XA04IA081Rotary Switch · inoperativeIAH - FLIGHT 3407, DURING CLIMBOUT OF IAH THE CREW REPORTED AN EMERGENCY ELECTRICAL ABNORMAL TRANSFER CAUTION INDICATION, APU AUTO-SHUTDOWN IN FLIGHT, AND EMERGENCY LIGHTS ON. THE CREW RETURNED TO IAH WHERE THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE RJul 2, 2004 · N14516 · Emb EMB135LRSDR USAABB04054Filter · bypassingON TAXI OUT, THE RIGHT IDG ON MEL AND THE APU OPERATING, THE APU PERFORMED AN AUTO SHUTDOWN. THE FLIGHT RETURNED TO THE GATE. MAINTENANCE FOUND IDG FILTER BYPASS BUTTON POPPED AND REPLACED THE IDG. FURTHER ACTION ON THE APU PENDING. (M)Jun 19, 2004 · N652US · Boeing 7672B7SDR REX2004F00001Apu · odorELECTRICAL/AC SMOKE IN CABIN. EVACUATED AIRCRAFT-MECHANIC NOTIFIED. PERFORMED ENG RUNS/BLEED AIR CHECKS IAW. NO SMOKE NOTED. OK FOR SERVICE. SMOKE IN CABIN ON APU START WITH PACKS ON APU. DEFERRED APU IAW MEL, CAT C AUTHORIZATION NR 48877. DM48877 IS DUJun 1, 2004 · N8444F · Cndair CL6002B19SDR CA040601007Csd · failedDURING CRUISE FROM VRA TO YYZ, RT CSD OUTLET TEMPERATURE INCREASED. CSD HAS BEEN DISCONNECTED. FEW TIME LATER, APU OIL TEMP WHEN HIGH AND APU HAS BEEN SHUT DOWN. AIRCRAFT LANDED AT YYZ AS SCHEDULED. MAINTENANCE IN YYZ DID DEFER THE RT CSD AS PER MEL 24-1. May 30, 2004 · Doug DC983SDR 2005UALA00364Apu · malfunctionedRETURNED TO SFO DUE TO AN AUXILIARY POWER UNIT PROBLEM. P2 SENSOR REPLACED. P2 SENSOR CONFIRMED SHIFTED. SHIFT IN FUEL FLOW SCHEDULE CAUSED APU NO START.Apr 16, 2004 · N665UA · Boeing 767322SDR CA040323001Csd · overserviced(CAN) DURING CRUISE FROM FLL, LT CSD OIL TEMP WENT HIGH. GENERATOR SWITCHED OFF. AIRCRAFT LANDED BACK TO FLL DUE TO APU NOT START. MAINTENANCE FOUND LT CSD OIL OVERFILLED. CSD RESERVICED IAW MM AND AIRCRAFT DISPATCHED SERVICEABLE.Mar 18, 2004 · Doug DC983SDR DHL2004755006Apu · odorON TAXI OUT NOTED SMOKE IN COCKPIT. EXECUTED SMOKE SOURCE IDENTIFICATION CHECKLIST AND SMOKE APPEARED TO CEASE. RETURNED TO BLOCKS. FOUND APU PNEUMATIC SYSTEM TO BE THE CAUSE OF THE FOUL ODOR IN THE COCKPIT. DEFERRED APU PER MEL 49-1. ASSIGNED DMI 16049 PLACMar 16, 2004 · N755DH · Boeing 727225SDR C2XA04BT033Apu · odorCREW REPORTED, STRONG ELECTRICAL ODOR WHEN SHUTTING DOWN APU. MAINTENANCE PERFORMED SEVERAL APU STARTS AND STOPS, NO ODOR NOTED. APU VISUAL INSPECTION GOOD. OPS CHECKED GOOD IAW EMB145 MM 49-00-00. AIRCRAFT RETURNED TO SERVICE.Mar 11, 2004 · N11544 · Emb EMB145LRSDR C2XA04BT026Odor · detectedCREW REPORTED, STRONG ODOR OF FUEL/OIL IN COCKPIT AND CABIN AFTER EVERY APU START. MAINTENANCE INSPECTED, PERFORMED SEVERAL APU STARTS IAW EMB145 AMM 49-00-00. OPS AND LEAKED CHECKED GOOD. NO SMELL NOTED. AIRCRAFT RETURNED TO SERVICE.Feb 29, 2004 · N13964 · Emb EMB145SDR CA040209007Starter Gen · burned(CAN) APU FAILED TO START, TECHNICIANS FOUND STARTER / GENERATOR BURNED, THE ATTACHED WIRES AND CONNECTORS WERE ALSO FOUND DAMAGED. OPERATOR ADVISED BY THEIR SPARES THAT THE STARTER GENERATOR, P/N 23088-002B SN Y0084 WAS REPAIRED BY THE VENDOR ONCE ALREADY. TFeb 6, 2004 · Dhav DHC8301SDR ZW0A0400201Apu · smokeFOR A TEST FLIGHT AFTER CHECK-C, DURING TAKEOFF AND INITIAL CLIMB THE COCKPIT AND CABIN FILLED WITH SMOKE. SHUTDOWN THE APU AND LANDED. REPLACED THE APU.Jan 29, 2004 · N719TW · Boeing 757231SDR AALA20040150Apu · smokeDFW INFLIGHT T563/28 SMOKE IN CABIN AFTER TAKEOFF AND REMAINED UNTIL LANDING. RETURNED TO DFW AND LANDED WITHOUT INCIDENT. REPLACED AUXILLARY POWER UNIT. SYSTEM GROUND CHECKED NORMAL OPERATION.Jan 28, 2004 · N403A · Doug DC982SDR USAABB04014Apu · shutdownSJU - WITH THE LT IDG ON MEL, THE APU WAS OPERATING ON THE GROUND. APU PERFORMED AN AUTO SHUTDOWN. APU WAS RESTARTED AND SHUTDOWN AGAIN. AFTER SEVERAL ATTEMPTS AT REPLACING COMPONENTS, SURGE VALVE, ECU, LCIT SENSOR, THE APU WAS REPLACED. A VERIFICATION FLIJan 27, 2004 · N653US · Boeing 7672B7SDR REXA04002Odor · detectedAPU AUTO SHUTDOWN DURING CLIMB-OUT. PILOT ATTEMPTED TO RESTART APU. THIS START ATTEMPT RESULTED IN A STRONG FUEL SMELL IN THE CABIN AND COCKPIT. CREW REQUESTED AND WAS GRANTED PERMISSION TO RETURN TO DAYTON. AN OTHERWISE UNEVENTFUL LANDING WAS PERFRMED AT Jan 19, 2004 · N8525B · Cndair CL6002B19SDR DLM90031151Apu · failedAPU ELECTRONICS FAILED 45 MIN AFTER T/O. REPLACED APU AND DOOR ASSY.Dec 31, 2003 · N912DN · Doug MD9030SDR Y2PA03025Relay · failedCREW WORKING ELECTRICAL PROBLEM ON LT BUSS USING COM W/APU STARTED & RUNNING. APU LOW OIL PRESSURE LIGHT & OIL TEMP HIGH LIGHT ILLUM. APU SHUTDOWN. A/C OPS ON NR 2 GEN & BATTERIES. AN EMERGENCY DECLARED, A/C GIVEN DIRECT TO SDF & VECTORED FOR APPROACH. AIDec 9, 2003 · N208US · Doug DC932FSDR USAASA03119Switch · leakingEN ROUTE PHL-NAS, PRIOR TO FLIGHT, WITH APU BLEED ON, A STRONG ODOR CAME FROM THE AIR CONDITIONING PACKS. THE ODOR DISSIPATED ONCE THE BLEED SOURCES WERE SWITCHED TO ENGINE. AFTER FLIGHT TOOK OFF, THE ODOR RETURNED THROUGHOUT THE AIRCRAFT. TEH FLIGHT RETURNEOct 7, 2003 · N176UW · Airbus A321211SDR CA031020002Apu · smoke(CAN) DURING THE TAKE OFF ROLL, THE SMOKE AFT LAV WARNING MESSAGE BECAME EVIDENT. THE LAVATORY SMOKE ALARM WAS GOING OFF AND THERE WAS A PRESENCE OF SOME SMOKE ACCORDING TO THE FLIGHT ATTENDANT. MAINTENANCE PERFORMED SOME TROUBLESHOOTING AND IN COMBINATION WITSep 28, 2003 · Cndair CL6002C10SDR C2XA03IA093Switch · inoperativeWHILE TRYING TO START THE APU THE CREW NOTED A STRONG FUEL ODOR AFTER TGE APU WAS STARTED. NOTE: IT IS DIFFICULT TO START THE APU, HAVE TO HOLD SWITCH UNTIL APU IS AT 100 PERCENT. MAINTENANCE REMOVED AND REPLACED THE APU EXTINGUISHER SWITCH, PERFORMED A OPERSep 6, 2003 · N14902 · Emb EMB145LRSDR MWEA030345Drain Mast · brokenRIGHT AUXILIARY POWER UNIT OVERBOARD DRAIN MAST IS BROKEN. FABRICATED AND INSTALLED REPLACEMENT DRAIN MAST.Aug 27, 2003 · N701ME · Doug MD88SDR USAASB03113Csd · disconnectedON CLIMB-OUT FROM FLL, EN ROUTE TO DCA, CREW REPORTED THE NR 2 ENGINE GENERATOR TRIPPED OFF LIE AS THE NR 2 CSD LOW OIL PRESSURE LIGHT ILLUMINATED. CREW STARTED APU AND PLACED THE APU GENERATOR ON LINE. AT FL240, THE APU SHUTDOWN WITH THE FAULT LIGHT AND THEJul 18, 2003 · N527AU · Boeing 7373B7SDR USAASB03101Apu · fireAFTER PUSHBACK FROM THE GATE, CREW REPORTED THE APU GENERATOR DROPPED OFF LINE. GORUND CREW ALERTED PILOT THAT THERE WAS AN APU TAILPIPE FIRE. NO APU FIRE DETECTION WAS NOTED BUT CREW ARMED AND DISCHARGED THE APU FIRE BOTTLE. THE MSY FIRE DEPARTMENT WAS CALJul 4, 2003 · N785AU · Boeing 7374B7SDR QXEA200300769Apu · leakingAIRCRAFT RETURNED TO FIELD WHEN AFTER TAKEOFF THE CREW RECEIVED AN AFT LAVATORY SMOKE DETECTOR WARNING. MAINTENANCE INSPECTED THE AIRCRAFT AND FOUND OIL IN MIXING MANIFOLD AND VERIFIED THAT THE APU WAS LEAKING OIL. DUCTING WAS CLEANED AND MEL WAS CONTINUED. OPJun 24, 2003 · N606QX · Cndair CL6002C10
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