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 AALA202308026491Apu · underservicedAIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT DIVERTED TO PBI DUE TO THE #1 ENGINE ELECTRICAL GENERATOR FAULT WHICH WOULD NOT RESET ALONG WITH THE APU AUTO SHUTDOWN IN FLIGHT. THE AIRCRAFT LANDED SAFELY AT PBI WITHOUT FURTHER INCIDENT. **ORJun 15, 2023 · N8001N · Airbus A319115SDR NACA2023061500002Unknown · unknownDURING TAXI IN APU FAULTED TWICE, NO START. PERFORMED APU BITE TEST PER FIM 49-11 FT 958, APU RUNS OK AT THIS TIMEJun 15, 2023 · N321CM · Boeing 767323SDR NACA2023061400001Module · failedAPU NO BLEED PRESSURE. REMOVED AND REPLACED FLOW SENSING MODULE PER AMM 49-53-08 OPS AND LEAK CHECK GOOD, COMPONENT NOT KNOWN TO TRAX.Jun 14, 2023 · N379CX · Boeing 767323SDR DALA2023060704646Unknown · unknownSHIP 9543 -DIV/DE- THE CREW DIVERTED THE AIRCRAFT TO MEM AND DECLARED AN EMERGENCY ON APPROACH DUE TO THE RIGHT GENERATOR FAILING AND THE APU ALREADY ON MEL DEFERRAL. CORRECTIVE ACTION: MAINTENANCE REPLACED THE APU ECU, THE RIGHT PCDU, THE LEFT & RIGHT BUS TIEJun 5, 2023 · N978AT · Boeing 717200SDR UIEA2023060540563Switch · unknownREMOVE APU "LOW OIL LEVEL SWITCH" AND REPLACE WITH APU "OIL QUANTITY TRANSMITTER"  P/N  8TJ99GGE1 AS PER TASK CARD 49-999-00-01(<P>REMOVED LOW OIL LEVEL SWITCH AND REPLACED WITH APU OIL QTY TRANSMITTER AS PER B767 AMM 49-94-04. OPS CHECK OK, NO LEAKS FOUND AJun 4, 2023 · N662GT · Boeing 76731ASDR I5PA2023060388801Surge Valve · faultyFLT NO: N/A (MX) ESI - APU PNEUMATIC FUNCTIONS INOP, REPLACED APU SURGE VALVE PER AMM 49-53-01. OPS CHK NORMAL.Jun 3, 2023 · N888LT · Boeing 757230SDR DALA2023060504484Unknown · unknown(LOG 2791630) UPON REMOVAL OF APU FOUND RH SIDE OF APU COMPARTMENT AIR INLET CUTOUT AFT ANGLE EXFOLIATED. REMOVED AND REPLACED ANGLE AND INSTALLED. ALL WORK PERFORMED IAW BOEING 737-800 SRM 53-80-13-1A-2 AND BOEING 737-800 SRM 51-40-02-0G.May 30, 2023 · N378DA · Boeing 737832SDR AALA202306018898Apu · odorAIRCRAFT WAS GROUNDED: WET DOG / MUSTY SMELL ON TAXI OUT AND ALSO ON DESCENT BELOW 10000 FEET. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)May 29, 2023 · N748UW · Airbus A319112SDR AALA202307284447Motor · leakingAIRCRAFT WAS GROUNDED: SMELLY SOCKS ODOR ON TAKE OFF AND CLIMB OUT. ODOR DISSIPATED THEN RETURNED AT THE GATE. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. ** SUPPLEMENTAL REPORT FOR AALA202305314447: MAINTENANCE FOUND EVIDENCE OF HYDRAULIC FLUID ONMay 27, 2023 · N152UW · Airbus A320*SDR AALA202307282027O-Ring · leakingAIRCRAFT WAS GROUNDED: SMELLY SOCKS ODOR ON TAKE OFF AND CLIMB OUT. ODOR DISSIPATED THEN RETURNED AT THE GATE. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. ** ORIGINAL REPORT WAS AALA202305314447** MAINTENANCE FOUND EVIDENCE OF HYDRAULIC FLUID ON THMay 27, 2023 · N152UW · Airbus A320*SDR AALA202305314447Unknown · unknownAIRCRAFT WAS GROUNDED: SMELLY SOCKS ODOR ON TAKE OFF AND CLIMB OUT. ODOR DISSIPATED THEN RETURNED AT THE GATE. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)May 27, 2023 · N152UW · Airbus A320*SDR AALA202307288043Apu · odorAIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORTED DIRTY SOCK SMELL THROUGH ENTIRE CABIN IN FLIGHT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202305308043: MAINTENANCE ACCOMPLISHED SMOKE ODOR FUME TROUBLESHOOTING TASK May 26, 2023 · N167US · Airbus A320*SDR AALA202305308043Apu · odorAIRCRAFT WAS GROUNDED: FLIGHT ATTENDANT REPORTED DIRTY SOCK SMELL THROUGH ENTIRE CABIN IN FLIGHT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)May 26, 2023 · N167US · Airbus A320*SDR AALA202306219355Lubrication Unit · leakingAIRCRAFT WAS GROUNDED: DURING DESCENT FLIGHT CREW REPORTED AN OILY OR DIRTY SMELL IN THE FLIGHT DECK.. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT FOR AALA202305259355: MAINTENANCE FOUND THE APU OIL LUBE MODULE LEAKING AND REPMay 23, 2023 · N744P · Airbus A319112SDR AALA202305259355Apu · odorAIRCRAFT WAS GROUNDED: DURING DESCENT FLIGHT CREW REPORTED AN OILY OR DIRTY SMELL IN THE FLIGHT DECK.. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)May 23, 2023 · N744P · Airbus A319112SDR AALA202305253834Apu · odorAIRCRAFT WAS GROUNDED: STRONG DIRTY SOCK SMELL THROUGHOUT THE CABIN DURING DESCENT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED. (OPEN)May 22, 2023 · N572UW · Airbus A320*SDR I5PA2023051988802Unknown · unknownFLT NO: MGE 300 (EVENT) - APU IN-FLIGHT START FAILD 3X. PERFORMED FIM 49-11 FT 846. FOUND STARTER CIRCUIT FAULT DURING BITE. PERFORMED FIM 49-11 FT 850. FOUND NO POWER AT RELAYK10010. DURING WIRING CHECK PER WDM 24-32-41, FOUND TRIPPED APU TRU CIRCUIT BREAKER May 19, 2023 · N888LT · Boeing 757230SDR AALA202306269481Apu · odorAIRCRAFT WAS GROUNDED: DIRTY SOCK SMELL/ODOR REPORTED BY CABIN CREW AT THE TOP OF DESCENT INTO BJX. ODOR WAS STRONG THROUGH OUT CABIN AND COCKPIT UPON GATE ARRIVAL. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU AFTER FINDING HEAVY OIL CONTAMINATION INMay 15, 2023 · N765US · Airbus A319112SDR AALA202305194630Cooling Fan · leakingAIRCRAFT WAS GROUNDED: DURING ALL PHASES OF FLIGHT, DIRTY SOCK SMELL ON AND OFF IN CABIN AND FLIGHT DECK, VERY STRONG ON TAXI IN. MAINTENANCE REPLACED THE APU OIL COOLING FAN PER AMM 49-52-51 AND ACCOMPLISHED A SATISFACTORY LEAK / OPERATIONAL CHECK.May 15, 2023 · N198UW · Airbus A320*SDR AALA202305199481Apu · odorAIRCRAFT WAS GROUNDED: DIRTY SOCK SMELL/ODOR REPORTED BY CABIN CREW AT THE TOP OF DESCENT INTO BJX. ODOR WAS STRONG THROUGH OUT CABIN AND COCKPIT UPON GATE ARRIVAL. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU AFTER FINDING HEAVY OIL CONTAMINATION INMay 15, 2023 · N765US · Airbus A319112SDR KCSA2023051516Duct · looseRANCID ODOR FROM PACKS. PACK INLET & EXHAUST AREA INSP, NO ABNORMALITY PACK, OPS CHK NORMAL IAW AMM 21-51-00 REV 98. DURING APU AREA INSP, FOUND APU OIL COOLER DIRTY & DUSTY. APU OIL COOLER PERFORMED IAW AMM 49-27-09 REV 98. DURING INSP APU DUCT, FOUND FLEXIBMay 15, 2023 · N776CK · Boeing 777FSDR UIEA2023051500459Unknown · unknownAPU FIRE ON EICAS, QRH PROCEEDURE PERFORMED SUCCESSFULLY, RETURN TO BLOCK.(<P>PERFORMED INSPECTION PER AMM 49-11-00-206-029, NO EVIDENCE OF APU FIRE OR DAMAGE NOTED.</P>)May 15, 2023 · N451PA · Boeing 74746NFSDR AALA202306267794Fuel Control · leakingAIRCRAFT WAS GROUNDED: BOTH PILOTS SMELLED TOXIC FUMES- MUSTY ODOR FOR MOST OF FLIGHT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **ORIGINAL REPORT WAS AALA202305156778** MAINTENANCE FOUND THE APU OIL FILLER CAP LEAKING OIL AND THE APU FUEL CONTROMay 11, 2023 · N9013A · Airbus A319115SDR AALA202305156778Apu · odorAIRCRAFT WAS GROUNDED: BOTH PILOTS SMELLED TOXIC FUMES- MUSTY ODOR FOR MOST OF FLIGHT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU. **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)May 11, 2023 · N9013A · Airbus A319115SDR UIEA2023050900442Unknown · unknown#2 ENG PNEU DUCT SUPPORT ROD BOLT MISSING 12 O'CLOCK POS FWD OF PRV .(<P>INSTALLED BOLT #2 ENG PNEU DUCT AT 12 O'CLOCK POS FWD OF PRV PER AMM 20-11-0</P>)May 8, 2023 · N1489A · Boeing 76731KSDR UIEA2023050900443Surge Valve · unknownAPU SURGE VALVE PNEUMATIC DUCT ASSY RUBBER COUPLING IS DAMAGED(<P>REMOVED AND REPLACED APU SURGE VALVE PNEUMATIC DUCT ASSY PER AMM 44-53-01-404-010. LEAK CHECK OK </P>)May 8, 2023 · N1489A · Boeing 76731KSDR NACA2023050400001Unknown · unknownAPU FAULT. DEFERRED APU IAW MEL 49-11-01A CATCMay 4, 2023 · N379CX · Boeing 767323SDR ASAA2023050343162Unknown · unknownAPU FAULT LIGHT ILLUMINATED WHEN ATTEMPTING TO START THE APU AFTER LANDING. GROUNDED - YES. FOUND MAINT MSG 49-41254 START CONVERTER UNIT SHOWS START SYS INOP. PERFORMED B737-9 IFIM TASK 49-40-00-810-818, PERFORMED 5 SUCCESSFUL STARTS OF APU AND MESSAGE DID NOMay 3, 2023 · N948AK · Boeing 7379SDR DALA2023050503508Unknown · unknown(LOG 4759244) AFTER STARTING ENGINE 2 STRONG GASSY ODOR FILLED COCKPIT AND CABIN. PERFORMED PACK BURN OUT PROCEDURE PER B737 AMM 21-00 AND REPLACED RECIRC FILTERS PER B737 AMM 21-25. RAN PACKS WITH APU BLEED AND BOTH ENG BLEEDS WITH NO ODOR PRESENT THROUGHOUT May 1, 2023 · N924DZ · Boeing 737900ERSDR AALA202306133454Apu · odorAIRCRAFT WAS GROUNDED: DESCENDING THROUGH ABOUT 15,000 FEET, A DIRTY MUST SOCK SMELL WAS NOTED. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU . **SUPPLEMENTAL REPORT FOR AALA202305023454: MAINTENANCE ACCOMPLISHED ENHANCED DECONTAMINTION OF THE ENVIRONApr 30, 2023 · N198UW · Airbus A320*SDR AALA202305023454Apu · odorAIRCRAFT WAS GROUNDED: DESCENDING THROUGH ABOUT 15,000 FEET, A DIRTY MUST SOCK SMELL WAS NOTED. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU . **SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)Apr 30, 2023 · N198UW · Airbus A320*SDR ASAA2023042543028Sensor · faultyPER MAINT CONTROL SCOTT CSS FAIL START ATTEMPT AT FL 410 W/ FAULT LIGHT ILLUMINATED. GROUNDED - YES. PERFORMED BITE CHECK OF APU REF B737-800 AMM 49-61-00 - FOUND STOPS CHECK NORMAL. PER TECH SERVICE REMOVED AND REPLACED INLET TEMP SENSOR REF B737-800 AMM 49-6Apr 25, 2023 · N532AS · Boeing 737890SDR ASAA2023042543027Sensor · faultyFAULT LIGHT ILLUMINATED DURING APU START ATTEMPT AT FL380. SUCCESSFUL CSS ACCOMPLISHED AFTER FAULT LIGHT EXTINGUISHED AT FL320. GROUNDED - YES. REF B737-800 FIM 49-40 TASK 801, REPLACED APU AIR INLET TEMP SENSOR (AMM 49-61-31)) AND AIR INLET PRESSURE SENSOR (AApr 25, 2023 · N588AS · Boeing 737890SDR ASAA2023042042952Unknown · unknownON PREFLIGHT FOUND FUEL DRIPPING FROM APU AREA AND ACCUMULATION ON GROUND. GROUNDED - YES. UNION AT FLOW DIVIDER VERIFIED LOOSE. SECURED UNION B-NUT,OPS CHECK GOOD REF B737-900 AMM 49-11-00-860-801 FOR 5 MINS NO LEAKS NOTED.Apr 20, 2023 · N468AS · Boeing 737990ERSDR AALA202304211306Unknown · unknownAIRCRAFT WAS GROUNDED: MILD/MODERATE TRANSIENT DIRTY SOCK SMELL AFTER TAKEOFF IN FRONT HALF OF AIRPLANE. DISSIPATED AFTER 2-3 MINUTES. DID NOT RE-OCCUR IN FLIGHT. REOCCURRED ON TAXI-IN. **SUPPLEMENTAL REPORT WILL BE SUBMITTED.** (OPEN)Apr 20, 2023 · N922NN · Boeing 737823SDR ABXA2023041960Unknown · unknownGROUND CREW ADVISED FLIGHT CREW  OF APU FIRE.  APU FIRE WARNING DID NOT INDICATE FIRE.  FLIGHT CREW  DISCHARGED BOTH  FIRE BOTTLES AND CALLED AIRPORT FIRE DEPT. MAINTENANCE GROUNDED AIRCRAFT. MAINTENANCE INSPECTED APU EXHAUST, OIL IS PRESENT BUT NOT EXCESSIVEApr 17, 2023 · N750AX · Boeing 767232SDR DALA2023042003115Unknown · unknownAIRCRAFT 3571, APU FAILED COLD SOAK START, 3 ATTEMPTS WERE MADE AT 38000 FT, EGT PEAK 015, STATIC AIR TEMP -63. CORRECTIVE ACTION: DEFERRED APU PER MEL 49-10-01A. REPLACED APU IGNITOR PLUG, AND APU FUEL CONTROL. (LP 8578605)Apr 16, 2023 · N571DZ · Airbus A350941SDR JJBA20230417008Unknown · unknownSMOKE ODOR FROM APU BLEED DURING TAKE OFF. PERFORMED OPERATIONAL CHECK OF APU. COULD NOT DUPLICATE. SUSPECT SMELL WAS ENGINE EXHAUST IN BLEED.Apr 13, 2023 · N14162 · Emb EMB145XRSDR DALA2023041503002Unknown · unknownAIRCRAFT 3125, THE AIR QUALITY OFF THE PACKS WAS SUBSTANDARD, MUSTY SMELL. IN ADDITION, THE FLIGHT ATTENDANTS REPORTED THAT THE CABIN WAS HOT ALTHOUGH INDICATED TEMP WAS 68F. QRH 2.47 DIRECTED HOT AIR SWITCH OFF. THIS HELPED CABIN TEMP AND ALSO, WE COULD NO LOApr 12, 2023 · N325NB · Airbus A319114SDR AALA202304147485Starter · leakingAIRCRAFT WAS GROUNDED: FUMES / MUSTY SMELL N THE CABIN NEAR SEAT ROWS 5, 6 AND 7 OCCURED DURING DESCENT. MAINTENANCE FOUND THE APU STARTER LEAKING OIL AND REPLACED IT PER AMM 49-42-51. A SATISFACTORY LEAK / OPERATIONAL CHECK WAS ACCOMPLISHED.Apr 11, 2023 · N177XF · Airbus A319112SDR UIEA2023040300309Lead · unknownENG #1 LOWER HIGH TENSION LEAD DAMAGED.(<P>REMOVED & REPLACED ENG #1 LOWER HIGH TENSION LEAD IAW 767-300 AMM 74-21-02. PERFORMED AUDIBLE TEST FOR ENG #1, AUDIBLE TEST OK IAW AMM 74-00-00</P>)Apr 3, 2023 · N1997A · Boeing 76733ASDR UIEA2023040300306Unknown · unknownECM 2023P-168 N1997A ENG #1 ESN #702928 IS EXPERIENCING HIGH FAN VIBRATION. A TRIM BALANCE IS REQUIRED TSLV 10,240 CSLV 3,348.(<P>PERFORMED LH ENG RUN UP PER AMM 71-00-00. INCREASED N2 POWER TO 99% & FAN VIB DID NOT EXCEED 0.9. NO DISCREPANCY NOTED. OPS CHECK Apr 3, 2023 · N1997A · Boeing 76733ASDR CALA2023040301009Sensor · unknownAPU SHUTDOWN EICAS ADVISORY APU AUTO-SHUTDOWN HAS OCCURRED. APU SURGE BLEED SYSTEM SENSORS FOUND COMPLETELY CLOGGED. THE CIFFERELLO ADDITIONAL MESH FILTER SCREEN LOCATED AT THE INLET PRESSURE CLEARED BLOCKAGES FROM PNEUMATIC LINES AND CLEANED THE INTAKE 40-11-Apr 3, 2023 · N217UA · Boeing 777222SDR DALA2023040502636Unknown · unknownSHIP 693 SMOKEY HAZE IN AFT CABIN WITH ELECTRICAL SMELL, CORRECTIVE ACTION: FOUND APU BATTERY TO BE SOURCE OF SMOKE AND SMELL. REPLACED APU BATTERY AND CHARGER PER B757 AMM 24-31. TESTS GOOD. C/W NO GO ODI PROCEDURES. OK FOR SERVICE. (8568626)Apr 2, 2023 · N693DL · Boeing 757232SDR ASAA2023033142696Generator · lowAPU FAILS TO START, BITE CHECK SHOWS MAINT MESSAGE 49-41245 SCU. GROUNDED - YES. REMOVED AND REPLACED APU STARTER GENERATOR IN REF TO B737-800 AMM 49-41-21.Mar 31, 2023 · N514AS · Boeing 737890SDR ASAA2023033042697Unknown · unknownAFTER LANDING 1ST ATTEMPTED APU START FAIL LIGHTS ILLUMINATED, NO START. 2ND ATTEMPT APU START FINE. GROUNDED - YES. COLD SOAK START PASSED.Mar 30, 2023 · N518AS · Boeing 737890SDR CALA2023032700895Pressure Switch · unknownAPU FAILED TO START DRAINED THEN FILLED APU GEARBOX OIL PER AMM 12-13-31. REMOVED AND REPLACED LOW OIL PRESSURE SWITCH IAW AMM 49-94-22. LEAK/OPS CHECK NORMAL. PARTS USED: M1103P0911-02,QTY :1Mar 27, 2023 · N77295 · Boeing 7378SDR AALA202304037693Apu · leakingAIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORTED A DIRTY SOCK SMELL DURING THE LAST 5 MINUTES OF FLIGHT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU AFTER FINDING EVIDENCE OF OIL LEAKS. ** SUPPLEMENTAL REPORT FOR AALA202303247693: MAINTENANCE REPLAMar 22, 2023 · N136AN · Airbus A320*SDR AALA202303247693Apu · leakingAIRCRAFT WAS GROUNDED: FLIGHT ATTENDANTS REPORTED A DIRTY SOCK SMELL DURING THE LAST 5 MINUTES OF FLIGHT. MAINTENANCE ISOLATED THE SOURCE OF THE ODOR TO THE APU AFTER FINDING EVIDENCE OF OIL LEAKS. ** SUPPLEMENTAL REPORT WILL BE SUBMITTED** (OPEN)Mar 22, 2023 · N136AN · Airbus A320*SDR GTIA2023032337059Unknown · unknownVERY STRONG FUME EVENT ON FINAL APPROACH. DIRTY SOCK SMELL OBSERVED BY FLIGHT CREW, FOWARD FA AND FIRST FIVE ROWS OF THE CABIN. ONE FLIGHT ATTENDANT SAID SHE SMELLED FUMES OFF AND ON DURING THE FLIGHT. PACK ONE WAS OFF DUE TO PREVIOUS DMI. -REF TSM 5-50-00-810Mar 21, 2023 · N930NK · Airbus A320271N
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