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 YENA2023092901165Unknown · unknownFLT#1248, TPA-LGA. 'DIRTY SOCK SMELL TURNED OFF PACK 1 AND SMELL SUBSIDED ( APU BLEED AIR SUPPLY SYSTEM ); T/S APU ODOR PER AMM 49-00-00-200-811-A, AND FOUND NO PRESENCE OF OIL IN APU COMPARTMENT, ALSO NO PRESENCE OF ODOR COMING FROM APU. APU OK FOR SVC. MDDR Sep 26, 2023 · N715JB · Airbus A320232SDR ASAA2023092645349Unknown · unknownSTARTED APU AFTER LANDING AND BLUE "MAINT" LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED APU BITE PROCEDURE PER FIM 49-60-801. NO CURRENT FAULTS, OIL INDICATION IS FULL. C/W APU START PER AMM 49-00-00 APU OPS NORMAL, MAINT LIGHT EXT. SEAMC NOTIFIED.Sep 26, 2023 · N593AS · Boeing 737890SDR NACA2023092500003Unknown · unknownAPU FAULT NO LIGHT UP. DEFERRED PER MEL 49-11-01A CAT C ON 9/26/2023Sep 25, 2023 · N321CM · Boeing 767323SDR NACA2023092500001Unknown · unknownAPU FAULT NO LIGHTUP. DEFERRED MEL 49-11-01A CAT C ON 9/26/2023Sep 25, 2023 · N321CM · Boeing 767323SDR AALA202309296227Cooling Fan · leakingAIRCRAFT WAS GROUNDED: ON ARRIVAL AT 7700' 32 MIN FROM CLT SUDDEN ONSET OF STRONG DIRTY SOCK SMELL. FLIGHT CREW DONNED O2 MASKS WHILE CABIN CREW DID NOT SMELL ANY ODOR. MAINTENANCE FOUND THE APU OIL COOLER (AALA202309290473) AND THE APU OIL COOLING FAN (AALA20Sep 25, 2023 · N141NN · Airbus A320*SDR NACA2023092400003Unknown · unknownAPU SURGE VALVE RIGID DUCT DAMAGED. REMOVED AND REPLACED APU SURGE VALVE RIGID DUCT IAW B767 AMM 49-53-01Sep 24, 2023 · N565NC · Boeing 767323SDR NACA2023092400002Unknown · unknownAPU SURGE VALVE CLAMP BROKEN. CONFIRMED FAULT, REMOVED AND REPLACED APU SURGE VALVE CLAMP IAW AMM 49-52-01 LEAK AND OPS CHECK GOOD.Sep 24, 2023 · N565NC · Boeing 767323SDR NACA2023092400001Ecu · failedAPU ECU SELECTOR KNOB MISSING. REMOVED AND REPLACED ECU IAW AMM 49-61-05Sep 24, 2023 · N565NC · Boeing 767323SDR AALA202310051738Apu · leakingAIRCRAFT WAS GROUNDED: AIRCRAFT DIVERTED TO PIT DUE TO THE FLIGHT CREW REPORTING A DIRTY SOCK SMELL JUST AFTER TAKEOFF THROUGH CRUISE. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202309251738: MAINTENANCE FOUND THE APUSep 23, 2023 · N167US · Airbus A320*SDR ASAA2023092345255Unknown · unknownMAINT LIGHT ILLUMINATED. GROUNDED - YES. MDS STATUS INDICATES APU OIL QUANTITY. OMF INDICATES 49-94304. PER IFIM 49-94304, LATCHED MESSAGE ERASED AND DOES NOT RE-POPULATE DURING APU OPERATION AND ECU RESTART. INSPECTED OIL QUANTITY, FINDING WITHIN LIMITS (OIL Sep 23, 2023 · N921AK · Boeing 7379SDR ASAA2023092345254Unknown · unknownAPU FAULT ON 2 START ATTEMPTS. GROUNDED - YES. INTEROGATED SYSTEM FOUND MX MESSAGES 49.4142 & WHEN START ATTEMPTED NEW MX MSG 49.41254. Y 30507ACCOMPLISHED IFIM TASK 49-40-00-810-805 BOTH MX MESSAGES NOT ACTIVE AND APU STARTED SUCCESSFULLY. REF LP 60911282 FORSep 23, 2023 · N931AK · Boeing 7379SDR AALA202309251738Apu · odorAIRCRAFT WAS GROUNDED: AIRCRAFT DIVERTED TO PIT DUE TO THE FLIGHT CREW REPORTING A DIRTY SOCK SMELL JUST AFTER TAKEOFF THROUGH CRUISE. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)Sep 23, 2023 · N167US · Airbus A320*SDR NACA2023092100001Unknown · unknownDURING READINESS CHECK APU OIL QTY STATUS IN VIEW, QTY ZERO. SERVICED APU OIL SYSTEM IAW AMM 12-13-04 (1 QT) EICAS READING OIL FULL.Sep 21, 2023 · N565NC · Boeing 767323SDR CALA2023092002824Controller · faultyIMMEDIATELY AFTER APU SHUTDOWN FLT ATTENDANTS REPORTED HOT AFT L LAV +SMELLED SMOKE IN LAV SMOKE/ODOR IN THE PLANE QUESTIONAIRE FILLED OUT BY FLT CREW PERFORMED INITIAL INSPECTION AS PER REF AMM 05-51-56. NO DEFECTS NOTED. A/C OK TO CONTINUE ADD EMP:U375129,USep 19, 2023 · N656UA · Boeing 767322SDR 2023F00281Fire Detector · inoperativeAPU FIRE DETECTOR INTERMITTENT IN FLIGHT.Sep 18, 2023 · N929PH · Skrsky S92ASDR AALA202309193177Apu · leakingAIRCRAFT WAS GROUNDED: ODOR EVENT ON DESCENT THROUGH AND INCLUDING ON GROUND WHILE DOORS OPEN IN CMH MUSTY SMELL THROUGHOUT THE FLIGHT DECK AND CABIN. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU AFTER FINDING OIL LEAKING FROM THE APU TURBINE COMPRESSep 16, 2023 · N748UW · Airbus A319112SDR AALA202309189872Cooling Fan · leakingAIRCRAFT WAS GROUNDED: ON TAKEOFF AND APPROACH TO LAND FLIGHT ATTENDANT ADVISE STRONG ODOR OF BURNT OIL IN CABIN. MAINTENANCE FOUND THE APU OIL COOLING FAN LEAKING OIL AND REPLACED IT PER AMM 49-52-51. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.Sep 14, 2023 · N973UY · Airbus A320*SDR AALA202309278726Apu · leakingAIRCRAFT WAS GROUNDED: THROUGH 13000' SWEAT, LOCKER ROOM,DIRTY SOCK, MILD/MODERATE /PERSISTANT ODOR THROUGH FLIGHT DECK ONLY, SWITCHED TO APU BLEED NO MORE ODOR WAS PRESENT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU DUE TO FINDING OIL LEAKING FROMSep 13, 2023 · N563UW · Airbus A320*SDR NACA2023091300001Unknown · unknownEXCESSIVE DRAINAGE FROM AFT APU OVERFLOW DRAINS. PERFORMED APU OPS CHECK AND LEAK CHECK, NO LEAKS NOTED AS PER B767 FIM 49-11 FT 958Sep 13, 2023 · N565NC · Boeing 767323SDR AALA202309188726Apu · leakingAIRCRAFT WAS GROUNDED: THROUGH 13000' SWEAT, LOCKER ROOM,DIRTY SOCK, MILD/MODERATE /PERSISTANT ODOR THROUGH FLIGHT DECK ONLY, SWITCHED TO APU BLEED NO MORE ODOR WAS PRESENT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU DUE TO FINDING OIL LEAKING FROMSep 13, 2023 · N563UW · Airbus A320*SDR I5PA2023091275707Apu · faultyFLT NO: N/A. (MX INSP.) ESI - APU BLEED INOP HISTORY. R/R APU PER AMM 49-11-01.Sep 12, 2023 · N757QM · Boeing 75729JSDR NACA202309122023Unknown · unknownAPU FAULT LIGHT ILLUMINATED. PERFORMED FIM TASK 49-11 FAULT TREE 959. THE APU IS SATISFACTORY. APU STARTING AND OPERATION NORMAL IAW AMM 49-11-00/201Sep 12, 2023 · N565NC · Boeing 767323SDR ASAA2023091045060Unknown · unknownATTEMPTED 2 APU STARTS ON THE GROUND WITH FAULTS ON BOTH ATTEMPTS. GROUNDED - YES. OPERATED APU START MULTIPLE CYCLES, OPERATED NORMALLY. NOTED APU PREV. FAULT. 49-41254. FOUND NON ACTIVE, SUSP. INT. FAULT. . NO PREV. HISTORY 30 DAYS NOTED. REF. IFIM 49-40-00.Sep 10, 2023 · N291BT · Boeing 7379SDR ASAA2023091045029Seal · out of limitsSIGMA SEAL FAIL DIMENSION INSPECTION. GROUNDED - YES. REMOVED AND REPLACED SIGMA SEAL WITH REF B737-900 AMM 49-15-11.Sep 10, 2023 · N419AS · Boeing 737990ERSDR ASAA2023090845028Converter · faultyPRESENT LEG FAULT SHOWS MAINT. MESSAGE 49-41254 "START CONVERTER SYSTE, INOP" ON TAXI IN. SHOWS NOT ACTIVE AND INTERMITTENT. GROUNDED - YES. (TROUBLE SHOOTING ON W/O: 1968485 TASKCARD: N/R-00001 ) REF IFIM 49-40-00-810-818, INSPECTED P6 CONNECTOR & D11114B CONSep 8, 2023 · N967AK · Boeing 7379SDR DALA2023091107383Unknown · unknownSHIP 3148 ENROUTE APU GENERATOR DID AN AUTOSHUT DOWNAT FL330. GENERATOR AIRBORN RESTART SUCCESFULL. CORRECTIVE ACTION: REPLACED APU LOW PRESSURE OIL SWITCH AND REPLACED RIGHT ENGINE IDG. OK FOR SERVICE. (4507048)Sep 8, 2023 · N348NB · Airbus A319114SDR I5PA2023090875703Monopole · faultyFLT NO: N/A (MX INSP.) ESI - APU BLEED INOP. REPLACED RH APU MONOPOLE.Sep 8, 2023 · N757QM · Boeing 75729JSDR NACA2023090700001Unknown · unknownAPU FAULT LIGHT ILLUMINATED. PERFORMED FIM TASK 49-11 FT 959. THE APU IS SATISFACTORY. APU STARTING AND OPERATION NORMAL IAW AMM 49-11-00Sep 7, 2023 · N565NC · Boeing 767323SDR ASAA2023090744990Unknown · unknownAPU FAULT LIGHT ILLUMINATED ON START. GROUNDED - YES. PERFORMED APU OPS TEST REF 49-11-00-710-802. NO FAULTS. NO HISTORY PAST 60 DAYS.Sep 7, 2023 · N979AK · Boeing 7379SDR I5PA2023090675702Module · faultyFLT NO: N/A (MX INSP.) ESI - APU BLEED INOP. REPLACED APU FLOW SENSING MODULE.Sep 6, 2023 · N757QM · Boeing 75729JSDR ASAA2023090545032Unknown · unknownREF LOG PAGE #60441010 APU FAULT LIGHT ILLUMINATED DURING CSS ATTEMPT. GROUNDED - YES. ON DEFERRAL.Sep 5, 2023 · N428AS · Boeing 737990ERSDR AALA202309066112Apu · odorAIRCRAFT WAS GROUNDED: DESCENDING THROUGH FL100 VERY DISTINCTIVE DIRTY SOCK SMELL. MAINTENANCE REPLACED THE APU PER TASK CARD 26L31049003.Sep 3, 2023 · N764US · Airbus A319112SDR ASAA2023090344910Unknown · unknownAPU FAULT LIGHT ON START UP. GROUNDED - YES. (RESOLVED ON W/O: 1967661 TASKCARD: N/R-00001 ) ACCOMPLISHED IFIM TASK 49-40-00-810-818. NO ACTIVE FAULTS NOTED - APU STARTED SEVERAL TIMES. OP CHECK NORMAL, NO FAULTS. NO HISTORY 30 DAYS. INTERMITTENT FAULT. CLEARSSep 3, 2023 · N966AK · Boeing 7379SDR ASAA2023090144906Unknown · unknownAPU EGT GUAGE READS 0 UPON START AND WHILE RUNNING, EVENTUALLY STARTED WORKING AFTER 5 MIN RUNTIME. GROUNDED - YES. ON DEFERRAL.Sep 1, 2023 · N587AS · Boeing 737890SDR NACA2023083100001Unknown · unknownAPU SHUTDOWN AT GATE. PERFORMED APU CONTROL UNIT BITE TEST, NO FAULT FOUND AT THIS TIME. OPS CHECK OK, PER AMM 49-61-05-792Aug 31, 2023 · N321CM · Boeing 767323SDR ASAA2023083144875Unknown · unknownAPU FAULT LIGHT ON START UP. GROUNDED - YES. ACCOMPLISHED IFIM 31-00-00-810-803. FOUND RECENT FAULT 49-41012. STARTED APU WITH NO FAULT LIGHT OBSERVED. ACCOMPLISHED BITE CHECK FOR CURRENT FAULTS "NONE ACTIVE".Aug 31, 2023 · N919AK · Boeing 7379SDR SWIA2023083101Unknown · smokeDURING APU TO ENGINE BLEED SWAP ON DEPARTURE, A SULFUR ODOR WAS NOTICED ALONG WITH A SMALL PLUME OF SMOKE OUT OF THE FO SIDE LARGE GASPER. SMELL AND ODOR CLEARED IMMEDIATELY AND DID NOT RETURN. DID NOT RESTART APU OR SWAP BLEEDS ON ARRIVAL. PACKS WERE OPERATINAug 30, 2023 · N944SW · Cndair CL6002B19SDR NACA202308270001Unknown · unknown2 APU ATTEMPTS MADE AT KMIA. BOTH ATTEMPTS FAILED WITH AN APU FAULT MESSAGE. SERVICED APU WITH ONE QUART, OPS CHECK GOOD. OK IN REF 767 AMM 12-13-04. GROUND VERIFICATION COMPLIED WITH. NO OTHER DEFECTS NOTED.Aug 27, 2023 · N565NC · Boeing 767323SDR ASAA2023082645779Thermocouple · failedAPU TREND DATA SHOWS CT5ATP TEMP IS APPROACHING THRESHOLD. (#PRI2/ETOPS)ETOPS SIGNIFICANT SYSTEM TASK AFFECTS APU ON DEMAND IN-FLIGHT START CAPABILITY. UPON COMPLETION, CONTACT MAINTENANCE CONTROL AND REPORT THAT THIS TASK HAS AFFECTED APU IN-FLIGHT START CAPAAug 26, 2023 · N464AS · Boeing 737990ERSDR AALA202309270603Apu · odorAIRCRAFT WAS GROUNDED: FLIGHT ATENDANTS REPORTED SMELLING FUMES AFTER TAKEOFF AT APPROXIMATELY 10000 FEET IN THE BACK OF THE AIRCRAFT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202308290603: WHILE ACCOMPLISHING THE AAug 26, 2023 · N510UW · Airbus A320*SDR NACA2023082600001Unknown · unknownAPU PNEUMATIC PRESSURE FLUCTUATES INTERMITTENTLY DURING PACK OPERATION. REMOVED AND REPLACED APU SURGE CONTROL VALVE IAW B767 AMM 49-53-01. NO PART INFO AVAILABLE AT THIS TIME.Aug 26, 2023 · N321CM · Boeing 767323SDR ASAA2023082644814Unknown · unknownAPU OIL QTY INDICATION STATUS MESSAGE, 49-94304. GROUNDED - YES. ON DEFERRAL.Aug 26, 2023 · N952AK · Boeing 7379SDR AALA202308290603Apu · odorAIRCRAFT WAS GROUNDED: FLIGHT ATENDANTS REPORTED SMELLING FUMES AFTER TAKEOFF AT APPROXIMATELY 10000 FEET IN THE BACK OF THE AIRCRAFT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)Aug 26, 2023 · N510UW · Airbus A320*SDR AALA202308297749Apu · contaminatedAIRCRAFT WAS GROUNDED: APU BLEED SMELLY SOCK SMELL ON DESCENT, LANDING, UNTIL SHUTDOWN. MAINTENANCE FOUND RESIDUAL OIL IN THE APU PLENUM AND CLEANED THE APU INTAKE PLENUM. MAINTENANCE ALSO ACCOMPLISHED THE DECONTAMINATION OF THE ENVIROMENTAL CONTROL SYSTEM. A Aug 25, 2023 · N109NN · Airbus A321231SDR IPXA2023082826833Apu · unknown*** SUPPLEMENTAL SDR *** APU GEN INTERMITTENTLY CUTS ON AND OFF*OII 2* PERFORMED APU BITE PROCEDURE IAW FIM TASK 49-11 FAULT TREE 803. T/S TO FIGURE 103 SH 7 TABLE B 'NORMAL STOP SIG' MESSAGE. FURTHER T/S TP FIM49-11-00/101 FIG 133 FOUND SYS SATIS. APU OPS CK'Aug 25, 2023 · N356UP · Boeing 76734AFSDR SIMA20230825001Unknown · unknownCRG AFT FIRE SYS FAIL CRG FWD FIRE SYS FAIL-C/A-PERFORMED NORMAL APU SHUTOFF / RESTART IAW AMMM 49-00-00 NO DEFECTS NOTED AT THIS TIMEAug 25, 2023 · N262NN · Emb ERJ170200LRSDR DALA2023082406890Unknown · unknownSHIP 3327 DIRTY SOCK SMELL WHEN APU IS IN USE. CORRECTIVE ACTION: FOUND DIRTY SOCK SMELL WHEN APU IS IN USE. ISOLATED BOTH ENGINES NO SMELL EVIDENT. INSPECTED APU DUCTING (BLEED) FOUND EVIDENT OF OIL IN DUCTING AND COMPRESSOR SECTION. APU REMOVED + REPLACED. CAug 24, 2023 · N827NW · Airbus A330302SDR ASAA2023082344740Unknown · unknown"MAINT" LIGHT APPEARED AFTER LANDING. GROUNDED - YES. FOUND MAINT MSG 49-72101 LOW OIL QTY REF. FIM TASK 49-90 TASK 804. SERVICED THE APU GEARBOX REF AMM 12-13-31. NO HISTORY 30 DAYS, OK FOR SERVICE.Aug 23, 2023 · N464AS · Boeing 737990ERSDR FDEA202308231479Duct · delaminatedTAIL COMPARTMENT, APU INLET DUCT IS DELAMINATED ON INTERNAL SURFACE BETWEEN BS1825 AND BS1865. REPAIRED APU INLET DUCT BY PERFORMING WET LAY UP REPAIR PER B757 SRM 51-70-17-0G AND FEDEX EA # F- 4900-T0375670Aug 23, 2023 · N979FD · Boeing 757200SDR ASAA2023082044710Control Unit · faultyAPU FAILED TO START AT FL370 ON 3 ATTEMPTS DUE TO FAULT LIGHT. NO EGT RISE DURING ATTEMPTS. APU STARTED NORMALLY AFTER LANDING. GROUNDED - YES. REMOVED AND REPLACED ELECTRONIC CONTROL UNIT REF AMM 49-61-12. PERFORMED APU BITE TEST REF AMM 49-61-00. NO FAULTS FAug 20, 2023 · N593AS · Boeing 737890
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