JASC 4940
Service difficulty reports · 1,424
Reports filed under 4940 · APU Start/Ignition 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 = '4940' 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.
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 = '4940' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR UIEA2016042600260Unknown · malfunctionedAPU DID NOT LIGHT AFTER TOUCH DOWN. TROUBLE SHOT APU IAW AMM 49-61-05. PERFORMED APU ECU BITE TEST. NOTED FAULT, ABORTED START, STARTED APU SEVERAL TIMES ON GND. OPERATIONS CHECKED GOOD.SDR ASAA2016042016482Fuel Control · failedCSS REQUEST ON DISPATCH RELEASE. FIRST START AT 36000 FT APU FAULT LIGHT ILLUMINATED. FAULT LIGHT EXTINGUISHED IMMEDIATELY AFTER SWITCH POSITION TO OFF. SECOND START 3 MINUTES LATER SUCCESSFUL. ACFT GROUNDED. APU INOPERATIVE CDU FAULT CODE 49-31175 - FAULTSDR ASAA2016040916316Exciter · failedAPU HAS HISTORY OF FAULT LIGHT ILLUMINATING DURING START WITH NO FLAME SHUTDOWN FAULTS BEING LOGGED. PREVIOUS MAINT IGNITION LEAD AND PLUG REPLACED. ACFT GROUNDED. R & R THE APU IGNITION UNIT. IAW AMM 49-41-31/401, OPS CHECKS NORMAL. NO CURRENT APU FAULTS.SDR ASAA2016040616269Exciter · failedON APU START, FAULT LIGHT ILLUMINATED. ACFT GROUNDED. R & R THE APU IGNITION UNIT, IAW AMM 49-41-31/401, OPS CHECKS NORMAL. NO CURRENT APU FAULTS.SDR ASAA2016040116203Igniter · failedAPU FAULT LIGHT CAME ON WHEN TRYING TO START THE APU. ACFT GROUNDED. R & R THE IGNITOR PLUG IAW AMM 49-41-51, AND THE IGNITOR LEAD IAW AMM 49-41-52. OPS CHECKED NORMAL.SDR ASAA2016033116212Warning Light · false activationAPU FAULT LIGHT ON START. ACFT GROUNDED. COMPLIED WITH FIM 49-60, TASK 801. NO FAULTS CURRENT STATUS. FAULT HISTORY FOUND 49-41011. NO FLAME SHUTDOWN. OPS CHECKS NORMAL AT THIS TIME.SDR ASAA2016032516097Igniter · failedAPU FAILED TO START & FAULT LIGHT ILLUMINATED. AFTER 5 MINUTES FAULT LIGHT WENT OUT. 2ND ATTEMPT TO START AND FAILED AGAIN WITH FAULT LIGHT. ACFT GROUNDED. COMPLIED WITH FIM 49-40, TASK 802. FOUND IGNITER WORN. R & R APU IGNITER PLUS REF AMM 49-41-51/ 401. SDR ASAA2016032416096Warning Light · false activationDURING APU START, THE FAULT LIGHT CAME ON, FOLLOWING THE QRH, THE LIGHT WENT OUT WITHIN 5 MINUTES. TRIED STARTING THE APU AGAIN, THE FAULT CAME ON AGAIN. ACFT GROUNDED. ACCOMPLISHED APU BITE REF FIM 49-60, TASK 801. CURRENT STATUS PAGE LOGGED FAULT 49-41011SDR AALA201603219006Starter · defectiveAIRCRAFT WAS NOT GNDED. APU AUTO SHUTDOWN IN FLIGHT, FOLLOWED BY SMELL IN THE CABIN. REPLACED APU STARTER IAW AMM 49-42-51-400-0065-A. ACCOMPLISHED A SATISFACTORY LEAK & OPERATIONAL CHECK WITH NO ODORS BEING DETECTED.SDR DALA2016032202286Starter · damagedAFTER ARRIVAL TO GATE, WITH ENGINES SHUTDOWN, A FEW PASSENGERS COMPLAINED OF A STRONG BURNING METAL ODOR AT THE AFT OF THE AIRCRAFT. FLIGHT CREW DID A WALKAROUND AND NOTED A STRONG BURNING ODOR AND SMOKE COMING FROM APU EXHAUST. MAINTENANCE FOUND THE APU STARSDR ASAA2016031816001Warning Light · false activationFAULT LIGHT ILLUMINATED ON APU START ATTEMPT. ACFT GROUNDED. CYCLED POWER, ATTEMPTED RESTART, STARTED AND OPS NORMAL, NO FAULT LIGHT. DID BITE CHECK, NO CURRENT FAULTS NOTED. OK FOR CONTINUED SERVICE.SDR ASAA2016031716002Warning Light · false activationAPU FAULT LIGHT DURING START. ACFT GROUNDED. FAULT CODE 49-41254 FOUND START CONVERTER UNIT SHOWS START SYSTEM INOPERATIVE. STARTED APU IAW FIM, TASK 49-40, TASK 821. GROUND VERIFICATION GOOD. APU ON DEMAND PROGRAM INOPERATIVE. SUCCESSFUL CSS MESSAGE RECSDR ASAA2016031315892Converter · failedBURNED WIRE ODOR IN ELECTRONIC EQUIPMENT BAY. ACFT GROUNDED. CONDUCTED GVI OF ELECTRONIC EQUIPMENT BAY. ODOR APPEARS TO BE AT P91 OR APU START CONVERTER UNIT. OPENED P91 INSPECTED WIRES & CIRCUIT BREAKERS & RELAYS, FOUND NO DEFECTS. OPENED FLOOR PANEL TO INSSDR ASAA2016031315891Starter Gen · failedAPU START-GEN UNIT FAILED OPS TEST. WOULD NOT COME ONLINE, FEEDER FAULT. ACFT GROUNDED. R & R APU STARTER-GENERATOR UNIT IAW AMM 49-41-21. LEAK AND OPS TEST GOOD.SDR P5CA2016030200066Clutch · failedAPU WILL NOT START. R & R STARTER CLUTCH IAW 49-41-06, OPS NORMAL.SDR UIEA2016030200112Clutch · malfunctionedAPU WILL NOT START. WILL NOT EXCEED 9 PERCENT RPM. TROUBLESHOT IAW FIM 694246 NR 7. R & R RELAY K117 IAW MCC REQUEST IAW WDM 24-31-41. REQUIRES OPERATIONS CHECK. APU START SATISFACTORY IAW AMM 49-11-00. LOG PAGE 694248 15 R & R STARTER CLUTCH & OPERATIONSDR SIMA20160301002Contactor · defectiveAT GATE PRIOR TO DEPARTURE, PUNGENT ACRID ODOR, SUGGESTIVE OF ELEC FIRE FILLED FLIGHT DECK. APU RUNNING, NO GND POWER, INSPECTED ACFT THERMALLY, NO SIGNIFICANT HOT SPOTS DETECTED INTERNAL OR EXTERNAL. SEE PRIOR WRITE UP FOR SMOKE PG 3998956 1. REF AML PAGE SDR UIEA2016022400106Starter · failedAPU INOPERATIVE. DURING INSPECTION FOUND APU STARTER FAILED. REPLACED APU STARTER IAW AMM 49-41-01. OPERATIONS CHECK COMPLIED WITH.SDR ASAA2016022115609Exciter · failedON GROUND TRIED TO START APU, WOULD NOT START W/ FAULT LIGHT ILLUMINATED. AFTER 5 MINUTES FAULT LIGHT EXTINGUISHED. ACFT GROUNDED. R & R APU IGNITION UNIT REF AMM 49-41-31, R & R APU IGNITION LEAD REF AMM 49-41-52. OPS CHECK NORMAL, APU STARTS NO CURRENT SDR ASAA2016021815590Exciter · failedAPU FAULT LIGHT AFTER LANDING UPON START UP. ACFT GROUNDED. PERFORMED FIM 49-40, TASK 802, REPLACED APU IGNITION UNIT IAW AMM 49-41-31. APU STARTS AND OPERATES NORMALLY, NO FAULT INDICATED.SDR AALA201602189013O-Ring · leakingAIRCRAFT HAS UNIDENTIFIED ODOR. APPEARS TO BE AN ACRID CHEMICAL SMELL, SEEMS TO BE COMING OUT OF COCKPIT VENT OVERHEAD. PER CREW A/C CABIN ODOR REPORT, SOURCE OF ODOR WAS APU. REPLACED O RING AT STARTER IAW AMM 49-42-51. ACCOMPLISHED APU LOAD COMPRESSOR WASDR HALA2016021500043Starter · malfunctionedETOPS SIGNIFICANT SYS-APU DID NOT START ON FINAL, APU FAULT, EICAS. ACCOMPLISHED 2ND ATTEMPT AFTER QRH PROCEDURE. APU FAULT, EICAS AGAIN. R & R APU STARTER WITH SERVICEABLE STARTER IAW AMM 49-41-01. OPS CK OK.SDR UIEA2016021200087Apu · failedAPU FAULT LIGHT AFTER LANDING. THREE ATTEMPTS UNSUCCESSFULLY. R & R APU IAW MM 49-11-01. OPERATIONS CHECK & LEAK CHECK OK.SDR HALA2016020500028Starter · leakingDURING SERVICE CHECK FOUND APU STARTER LEAKING OIL. R & R THE APU STARTER IAW AMM 49-44-00, NO LEAKS NOTED. PERFORMED 2 APU STARTS SUCCESSFULLY OK FOR SERVICE.SDR P5CA2016020400018Exciter · faultedPERFORMED APU COLD SOAK START, DID NOT START. APU FAULT EICAS APPEARED. LP 696503, ITEM 1: ITEM TRANSFERRED DO DMI MDDR 64015, PLACARD INSTALLED. APU INOPERATIVE ER OPERATIONS NOT ALLOWED. T/S ECU- IGN UNIT FAULTY. ITEM M3: R & R EXCITER BOX IAW 49-41-03. OSDR ASAA2016012014936Converter · failedAPU FAULT LIGHT ON FIRST START ATTEMPT. ACFT GROUNDED. ACCOMPLISHED FIM 49-40 TASK 821. NO CURRENT FAULTS. HISTORY SHOWS MESSAGE 49-41254. HAS HISTORY OF PRIOR OCCURRENCES. REF AMM 49-41-61-400-801, R & R APU START CONVERTER UNIT. OPS TEST NORMAL.SDR HALA2016011100005Battery · dischargedAPU FAILED TO START, BATTERY READS LOW. REPLACED APU BATTERY IAW AMM 24-31-04. ACFT OK FOR CONTINUED SERVICE.SDR UIEA2016011200014Starter · failedAPU FIRE DURING GND TIME. EMER PROCEDURE CARRIED OUT BY FLIGHT CREW, FIRE EXTINGUISHING BY APU BOTTLES. INSPECTION CARRIED OUT IAW AMM 49-11-00-206. RAM FORM COMPLETED & SENT TO MCC, FOUND STARTER MOTOR FAILURE. EO 4449A027 & 4453B170 REFERS.SDR P5CA2016010800001Tru · shortedAPU FAILED TO START, 3 ATTEMPTS. FOUND APU T/R CIRCUIT BREAKER TRIPPED. FOUND TRU SHORT TO GROUND. R & R APU TRU, PERFORMED APU OPS CHECK, CONDITION OK IAW AMM 24-32-04. AMM 49-11-00.SDR ASAA2016010614643Exciter · failedAPU HAS HISTORY OF NO STARTS. ACFT GROUNDED. R & R IGNITER PLUG, IGNITER PLUG LEAD AND EXCITER IGNITER UNIT IAW AMM 49-41-15, 49-41-52, 49-41-31.SDR HALA2016010200001Igniter · failedAPU FAILED TO START AFTER THREE ATTEMPTS. REPLACED APU IGNITER IAW AMM 49-41. OPS CHECKED NORMAL. APU STARTS AND RUNS NORMAL. ACFT OK FOR SERVICE.SDR AALA201601029002Exciter · defectiveAIRCRAFT WAS GNDED. AT GATE WITH APU ON, FUMES & FUEL ODOR SMELT THROUGHOUT COCKPIT & CABIN. TROUBLE SHOT IAW FIM 4910421, FOUND APU EXCITER FAULT. REPLACED APU EXCITER. ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK IAW AMM 49-41-01.SDR ASAA2015122614466Warning Light · illuminatedFAULT LIGHT ILLUMINATED ON CSS APU START ATTEMPT AT FL 390, FAULT LIGHT ON SECOND ATTEMPT AT FL 375, GOOD APU START ON THIRD ATTEMPT AT FL 295. ACFT GROUNDED.SDR ASAA2015122314465Starter Gen · failedAPU FAULT LIGHT ILLUMINATED DURING START. ACCOMPLISHED QRH, LIGHT EXTINGUISHED. ATTEMPTED ANOTHER START, FAULT LIGHT ILLUMINATED AGAIN. ACFT GROUNDED. REPLACED APU STARTER GENERATOR, IAW AMM 49-41-21. LEAK CHECK ACCOMPLISH OPS CHECK, GOOD. PERFORMED APU BITE PSDR ASAA2015122114383Exciter · failedAPU WILL NOT START. FAULT LIGHT ILLUMINATED. ACFT GROUNDED. APU BITE TEST SHOWS FAULT CODE 49-41180, IGNITION CIRCUIT SHOWS HIGH CURRENT. REPLACED THE APU IGNITION UNIT IAW AMM 49-41-31 AND FIM 49-40, TASK 804. OPS CHECK GOOD WITH 4 SUCCESSFUL STARTS.SDR UIEA2015121800775Exciter · defectiveAPU FAULT EICAS MSG, 2 ATTEMPTS. DID NOT START AFTER LANDING. TRANSFERRED TO DMI MDDR 62778 IAW DDG 49-11-01A CAT C, DUE 28 DEC 15. R & R STARTER, PN 519858-8, SN 10-2312, IAW AMM 49-41-01, NO HELP. R & R EXCITER BOX IAW AMM 49-41-03. OPERATIONS CHECKED GSDR ASAA2015112413995Warning Light · false activationAPU FAULT LIGHT ILLUMINATED. ACFT GROUNDED. ACCOMPLISHED APU BITE PROCEDURE REF FIM TASK 49-60, TASK 801. SHOWED FAULT CODE 49-41245, START CONVERTER UNIT SHOWS GENERATOR UNDER VOLTAGE. PERFORMED START CONVERTER UNIT SHOWS GEN UNDER VOLTAGE FAULT ISOLATIONSDR ASAA2015112413993Exciter · failedAPU FAULT LIGHT ON TWO ATTEMPTS. ACFT GROUNDED. REPLACED IGNITION UNIT REF AMM 49-41-31-000-801 AS WELL AS IGNITER PLUG, REF AMM 49-41-51.SDR P5CA2015112000176Controller · failedAPU START FAIL. R & R APU CONTROLLER IAW AMM 49-11-05 BUT NO HELP, SO BACK TO NORMAL. TRIED TO BATTERY START, WAS SUCCESSFUL.SDR ASAA2015111813851Ignition Unit · failedAPU FAULT LIGHT REMAINS ON AFTER APU START. SWITCH IN OFF. ACFT GROUNDED. R & R APU IGNITION UNIT REF AMM 49-41-31. OPS CHECKS GOOD.SDR SWIA201541502Fuel Nozzle · out of positionAFTER LANDING, STARTED APU AND RECEIVED AN ITT SPIKE. ATC REPORTED TO THE CREW THEY SAW FLAMES FROM THE RT ENGINE. RT ENGINE PARAMETERS NORMAL. REINSTALLED APU NOZZLE IN CORRECT POSITION, LEAK CHECKED GOOD.SDR QXEA2015092700511Starter Gen · malfunctionedAPU FAIL DURING START. RAMP AGENTS REPORTED SMOKE COMING FROM EXHAUST, BLOWING SMOKE FROM EXHAUST. STARTED APU WITH EXTERNAL POWER AND APU RAN NORMAL. DEPRESSED GEN SWITCHLIGHT AND UPON TURNING OFF OF EXTERNAL POWER, APU AUTOSHUTDOWN. R & R APU DC STARTER/SDR QXEA2015092400506Igniter · failedFAILED ATTEMPT TO START APU. GROUND PERSONNEL REPORT SMOKE COMING FROM APU EXHAUST. REPLACED BOTH IGNITORS IAW AMM TASK 49-40-04-000-801 & TASK 49-40-04-400-801, OPS TESTED GOOD, RETURNED TO SERVICE.SDR ASAA2015091813110Power Unit · failedFIRST ATTEMPTED APU START AT FL 400. APU START FAILED ON FIRST ATTEMPT WITH FAULT LIGHT. QRH FAULT LIGHT EXTINGUISHED AFTER 5 MINUTES. DESCENDING TO FL 340 FOR 2ND ATTEMPT, APU START SUCCESSFUL AT FL 340. ACFT GROUNDED. R & R APU START POWER UNIT AND START SDR ASAA2015091113024Converter · faultedAPU FAULT ON START. AFTER LANDING. ACFT GROUNDED. REPLACED APU START CONVERTER UNIT REF AMM 49-41-61. OPS CHECKS NORMAL.SDR ASAA2015091013026Warning Light · illuminatedFAULT LIGHT ILLUMINATED DURING APU START ATTEMPT FL 380. ACFT GROUNDED.SDR ASAA2015090312951Apu · malfunctionedAPU " FAULT" LIGHT ILLUMINATED ON APU START. ACFT GROUNDED. PERFORMED FIM TASK 49-40, TASK 803 FOUND FAULT CODE 49-41012. PERFORMED SUCCESSFUL GROUND START, IAW AMM 49-11-00.SDR HALA2015082800177Ecu · malfunctionedAPU "FAULT" LIGHT ON START. APU START FAILED. REPLACED APU ECU IAW AMM 49-61-05-404-008. GROUND CHECK OK. OK FOR SERVICE.SDR HALA2015082500171Exciter · malfunctionedAPU FAULT, AUTO SHUTDOWN UPON ARRIVAL, 3 START ATTEMPTS. NOTED APU OIL QTY 50 PERCENT ON EICAS, SERVICED APU WITH 2 PINTS. ACCOMPLISHED APU BITE CHECK ON ECU. NOTED IGNITION SYS FAULT. R & R IGNITION EXCITER IAW AMM 49-41-03-404-010. APU START OK, NO FAULTSSDR P5CA2015082700109Relay · failedEO 6749A003, STEP 5.F, REQUEST TO REPLACE APU START RELAY K197 IAW SWPM 20-81-22, RE. 60 AND WDM 49-41-11, REV 9. REPLACED APU START RELAY K197 IAW AMM 49-11-00-802-002, REV 112, PERFORMED APU STARTING AND OPERATION. THE RESULT WAS SATISFACTORY.
Back to JASC 4940