JASC 4940
Service difficulty reports · 1,425
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 DXTA200702124Starter · failedAPU SHUTDOWN AFTER A BURNING ODOR PRESENT IN THE CABIN. APU SYSTEM FAIL FOLLOWED THE SHUTDOWN. [4-27-07] REMOVED AND REPLACED APU STARTER GENERATOR IAW 680 MM CHPT 49-40-00. LEAK AND OPS CHECK GOODSDR AMTA200700180Filter · unknownAPU FAULT LIGHT ILLUMINATED AND APU SHUTDOWN AFTER ELECTRICAL WAS ON LINE. REMOVED AND REPLACED APU STARTER GENERATOR FILTER IAW MM 49-91-12-4. (K)SDR MASA200700149Oil Cooler · dirtyASH 7424 IAD - APU FIRE WARNING WITH APU FAULT AND DOOR INHIBIT. MX CLEANED OIL COOLER AND REPAIRED LOOPS.SDR DL76S070211Starter · inoperativeSTRONG SMELL NOTICED BOTH INSIDE AND OUTSIDE AIRCRAFT SMELL STARTED AFTER POWER TRANSFER TO APU AND PACKS WERE TURNED ON. GROUND PERSONNEL ALSO REPORTED STRONG SMELL AND REPORTED SMOKE COMING OUT OF AN APU VENT. INSP APU AREA FOUND STARTER MOTOR W/STRONG BURSDR CA070312003Starter · failed(CAN) APU SHUTDOWN ON ITS OWN AND WOULD NOT RE-START. NEW STARTER INSTALLED. NEW STARTER BLEW APART ON FIRST START ATTEMPT. SECOND STARTER INSTALLED AND OPERATED SERVICEABLE. (TC NR 20070312003)SDR AMTA200700145Starter · faultyAPU FAILED TO START 10 PERCENT RPM, 756 ECU FAULT (ABORTED START). APU COPARTMENT FULL OF ELECTRICAL SMOKE. REMOVED AND REPLACED APU STARTER IAW AMM 49-41-01, OPS CHECK NORMAL. (K)SDR MASA200700119Starter · burnedASH 7367 IAD - CREW REPORTED APU SHUT DOWN WITH BURNING SMELL AND SMOKE. MX REPORTED THE STARTER BURNT UP CAUSING THE SMELL. MX REPORTS THE APU START CONTACTOR IN JB-5 IS BAD AND THE STARTER IS BURNED BECAUSE OF THE CONTACTOR. MX DISABLED THE START CONTACTOSDR HALA0700061Ecu · failedETOPS SIGNIFICANT SYSTEM, APU FAILED TO START 3 TIMES. BITE CHECK ECU FOUND GEN FILTER PRESS SW FAULT REMOVED AND REPLACED PR SW PER AMM 49-27-15 COND SAME 6821. REMOVED AND REPLACED ECU PER AMM 49-61-05 COND SAME 5979 REPL K617 AND K197 RELAY PER 767 WDM49-SDR SIMA200704402Starter · seizedACID SMELL IN CABIN AND FLIGHT DECK FOLLOWED BY INTERMITTENT APU GENERATOR OFF BUSS MESSAGE ON EICAS. COULD NOT DUPLICATE SMELL IN CABIN OR FLIGHT DECK. PERFORMED ELECTRICAL SYSTEM INSPECTION ON WINDSHIELD CONTROLLER TERMINALS WITH NO DEFECTS. FOUND APU STASDR FDKA200702039Starter Gen · malfunctionedFDM 6001 LEX-ATL (1001 PHX LCL). APU WAS SHUTDOWN DUE TO BLUE SMOKE COMING OUT WITH NO FIRE INDICATION. MX REMOVED AND REPLACED STARTER GEN, OPS GOOD.SDR AALA20070160Starter · leakingORD INFLIGHT, SMOKE AND FUMES REPORTED AFTER TAKEOFF. ENGINE ANTI ICE ON PACKS MEDIUM SETTING. SMOKE DISSIPATED WITH REDUCTION IN POWER AND TEMPERATURE CONTROLLERS SET TO FULL COLD. RETURNED TO ORD AND LANDED WITHOUT INCIDENT. REPLACED AUXILIARY POWER UNITSDR F3LA200700009Starter · burnedDURING C-2 CHECK, INSPECTION REPORTED THE APU STARTER TERMINAL BLOCK AND RUBBER FOOT BURNED AND MELTED. WIRES GOING TO APU STARTER MOTOR BURNED AT TERMINAL LUGS. REPLACED APU STARTER PER SMM 49-42-51-000-004 AND 49-42-51-400-004. RE-TERMINATED POSITIVE WIRESDR HALA0700019Relay · shortedETOPS SIGNIFICANT SYSTEM, REPEAT WRITE UP APU FAULT EICAS MESSAGE AFTER ATTEMPTED START AFTER LANDING OIL QTY READ FULL ONLY GOT TO 30 PERCENT THEN SHUT DOWN AUTOMATICALLY. OIL QTY READ .25, AT GATE READ .75. STARTED APU START NORMAL OPERATED AIR PACKS ELECTSDR TSAA0649103Converter · malfunctionedGROUND EVENT, APU FAULT MESSAGE 49-41250 (STARTER CONVERTER UNIT). START SYSTEM INOP. MAINTENANCE REMOVED AND REPLACED THE STARTER CONVERTER UNIT AND COMPLETED ALL OPERATIONAL CHECKS. AIRCRAFT RETURNED TO SERVICE. GROUND EVENT- APU FAIL TO START. MAINTENASDR USAASB06109Ignition Unit · faultyCHS FLT1758 DURING CRUISE, ENROUTE FROM PBI TO PHL, CREW RECEIVED AN OVERHEAT WARNING ON THE NR 1 ENGINE CSD. CREW ACCOMPLISHED QRH PROCEDURES AND DISCONNECTED THE NR 1 ENGINE CSD. WHEN ATTEMPTING TO START THE APU AT VARIOUS ALTITUDES, THE APU WOULD NOT STSDR QXEA200602625Igniter · inoperativeYEG FLIGHT 2516: APU FAILED AFTER START - SLIGHT SMELL OF SMOKE AFTER SHUTDOWN. MAINTENANCE C/W FIM TASK 49-20-00-810-803. FOUND BOTH IGNITORS BAD. REPLACED IAW AMM TASK 49-40-01-000-801 AND 49-40-01-400-801. ALSO FOUND IGNITION LEAD FOR A CHANNEL BAD. REPLACESDR HALA0600691Starter · inoperativeETOPS SIGNIFICANT SYSTEM, APU WILL NOT START. GRINDING NOISE FROM APU STARTER. REMOVED AND REPLACED APU STARTER PER AMM 49-41-01. OPS CHECK OK. OK FOR SVC.SDR AMTA200600524Starter · unserviceableAPU WILL NOT START, HANGS AT 22 PERCENT, EGT 700 DEG. REMOVED AND REPLACED APU STARTER IAW MM. PU OPS CHECK GOOD. (K)SDR DLM90060666Starter · overheatedAPU AUTO SHUTDOWN ON TAXI OUT, ACS FAULT ON OAP, AND STRONG ELECTRICAL SMELL IN CABIN. INSTALLED NEW STARTER PER M/M. INSPECTED APU COMP. NO PROBLEMS NOTED. REPLACED APU START RELAY. APU OPS CHECKS NORMAL. STARTER LEAK CHECK GOOD. NO FAULTS.SDR HALA0600544Ecu · unserviceableETOPS SIGNIFICANT SYSTEM - APU WILL NOT START. REMOVED AND REPLACED APU BATTERY - ECU, EXCITER, GRD RUN CHECK OK PER AMM'S 24-31-04, 49-41-03, 49-61-05.SDR AMTA200600455Valve · unserviceableAPU FAILED TO START. FAULT LT ILLUM AND EICAS MSG APU FAULT DISPLAYED. SECOND ATTEMPT INDICATES NO RPM RISE. T/S IAW FIM. REPLACED APU DE-OIL SOLENOID VALVE. APU START AND BITE GOOD. REF MM. (K)SDR HALA0600513Starter · failedETOPS SIGNIFICANT SYSTEMS - MAINT ENTRY: APU WILL NOT START- APU FAULT LITE ILLUMINATED AND APU BITE MSG ON EICAS (STATUS LEVEL). T/S TO BAD APU STARTER (FIM 49-11-00) REMOVE AND INSTALL STARTER (49-41-01-004-001 AND 49-41-01-404-007). REPLACED STARTER. OPSDR HALA0600484Switch · openETOPS SIGNIFICANT SYSTEM, PER FLT CREW APU WILL NOT START ON TAXI IN HNL. REPLACED APU AIR INTAKE DOOR OPEN SWITCH PER AMM 49- 15-02-404-13. OPS CHECK OF APU PER AMM49-15-02-404-13 OK.SDR 2006FA0000731Igniter · brokenPART OF IGNITER PLUG THAT SURROUNDS ELECTRODE SEPARATES AND SHORTS AGAINST THE ELECTRODE CAUSING THE APU NOT TO START. PART COULD POSSIBLY ENTER THE COMBUSTION AREA OF THE APU. (NOTE: APU HAS ONE IGNITER, WE HAVE HAD 2 RECENT FAILURES). (K)SDR 2006FA0000730Igniter · separatedPART OF IGNITER PLUG THAT SURROUNDS ELECTRODE SEPARATES AND SHORTS AGAINST THE ELECTRODE CAUSING THE APU NOT TO START. PART COULD POSSIBLY ENTER THE COMBUSTION AREA OF THE APU. (NOTE: APU HAS ONE IGNITER, HAD 2 RECENT FAILURES).SDR AMTA200600396Starter · unserviceableAPU NO START, FAULT LIGHT ILLUMINATED. REMOVED AND REPLACED APU STARTER IAW AMM. (K)SDR HALA0600397Ecu · unknownETOPS SIGNIFICANT SYSTEM, UPON PARKING AT GATE APU AUTO SHUTDOWN. BITE CHK APU ECU PER AMM 49-61-05 FOUND CONTROL FAIL AND LRU FAULT APU ECU. REMOVED AND REPLACED APU ECU PER AMM 49-61-05, OPS CHK GOOD, BITE CHK GOOD OK FOR SERVICE.SDR DLM90060424Starter · burnedFOUND APU STARTER AND HARNESS BURNED DURING START. REPLACED APU STARTER AND HARNESS ASSEMBLY AND R2-63 START RELAY PER M/M. NOW CHECKS GOOD.SDR DLM90060413Starter · overheatedAPU WOULD NOT START 2 ATTEMPTS MADE. CONTROL C/B PULLED RAMP REPORTED SMOKE FROM APU COMPARTMENT. SMOKE STOPPED IN FIVE MINUTES. TORQUED RELAY TERMINALS. REPLACED APU STARTER AND CLAMP. INSPECTED TAIL PIPE AND STARTER HARNESS FOUND OK. BITE ECU, FAULTS ASDR SA06030Exciter · faultyFLIGHT 25, BDA-PHL - APU AUTO SHUTDOWN TWICE AT FL380 AND FL320. MAINTENANCE FOUND EXCITER AND OIL PRESSURE FAULTS ON TEST PAGE OF MCDU. REMOVED AND REPLACED APU EXCITER, OIL PRESSURE SWITCH AND FLOW DIVIDER. APU FAULTS REMOVED, OPS AND LEAK CHECKS ARE GOODSDR AMTA200600271Apu · inoperativeAPU FAILED TO START FAULT LIGHT ILLUMINATED AND EICAS MSG APU FAULT DISPLAYED, SECOND ATTEMPT EGT 77 BUT RPM 32 NO START. PERFORMED BITE CK OF APU ECU. NO FAULTS NOTED, APU STARTED, OPS CHECK NORMAL. (K)SDR 2006UALA00631Starter · malfunctionedLEFT IDG FAILED EN ROUTE, APU NO START. APU ELECT STARTER FAILS CHRONIC APU ELECTRIC STARTER PROBLEMS - 7 STARTERS SINCE APU INSTALLATION JAN 05, + 3 START CONTACTORS 2 APU BATTS, 2 CHARGERS SEVERAL APUC'S, AUTO START CONT RELAYS AND VARIOUS OTHER APU COMPONESDR MYW2006F00001Igniter · dirtyPRIOR TO DEPARTURE, APU FAILED TO START. FAULT CODE 49-41011. NO FLAME SHUTDOWN START PROCEDURES. DMI NR 4542, REMOVED AIRCRAFT FROM ETOPS OPERATION. TROUBLESHOT SYSTEM, REMOVED, CLEANED AND REINSTALLED IGNITER AND IGNITION LEAD. OPERATIONAL CHECKED GOODSDR DXTA200601224Starter Gen · seizedWHILE SITTING ON THE RAMP WITH APU RUNNING. THE CABIN LIGHTS FLICKERED AND AN ELECTRICAL BURNING SMELL WAS PRESENT. SHUT DOWN APU. TOOK ALL PWR OFF. THERE WERE NO CB'S POPPED. THE SMELL WAS ONLY PRESENT IN THE CABIN. APU WILL NOT START. GAINED ACCESS TOSDR 2006FA0000082Switch · pilot errorPILOT MISTAKENLY TRIPPED THE APU FIRE EXTINGUISHER SWITCH INSTEAD OF THE APU START SWITCH. BOTH SWITCHES ARE OF THE SAME STYLE, ARE LOCATED CLOSE TOGETHER AND BOTH HAVE THE SAME STYLE OF RED GUARDED SWITCHES. (K)SDR DLM90050808Starter · unserviceableON APU START, APU FAULT DISPLAYED AND SMOKE COMING FROM TAIL COMPT. ON FURTHER INSP, SAW VISIBLE FLAME COMING FROM APU STARTER. FLAME WENT OUT AND NO EXTINGUISHING AGENT WAS NEEDED. REPLACED STARTER, CLUTCH, AND START RELAY.SDR AU510001903Drive Shaft · sheared(AUS) APU STARTER MOTOR DRIVESHAFT SHEARED. INVESTIGATION FOUND THAT THE BROKEN END WAS JAMMED IN THE CLUTCH ASSEMBLY. (CASA NR 510001903)SDR AU510001802Motor · shearedAPU STARTER MOTOR DRIVE SHAFT SHEARED.SDR AU510001740Exciter · faultyAPU IGNITION EXCITER UNIT FAULTY.SDR AU510001521Igniter · failedAPU IGNITER PLUG FAILED. WORKSHOP INVESTIGATION FOUND THAT ONLY APPARENT FAULT WAS SLIGHT SOILING ON THE CERAMIC INSIDE OF THE CONNECTOR END OF THE IGNITER. THERE WAS NO OBVIOUS SIGN OF ARCING ACROSS THE CERAMIC SURFACE. WHEN THE IGNITER WAS CLEANED, THERE WSDR MYW2006F00008Ecu · inoperativeON LANDING, APU DOES NOT START. NO APU INDICATION LIGHTS ON. FRM 492-130-00. TROUBLESHOT SYSTEM, FOUND ECU AT FAULT. REMOVED AND REPLACED APU ECU. APU OPERATION CHECKS GOOD. REMOVED PLACARD AND RETURNED AC TO SERVICE. (K)SDR C2XA05BT051Starter Gen · failedCREW REPORTED ON TAXI, APU FAILED AND BURNING ODOR IN THE COCKPIT, AIRCRAFT WAS INSPECTED AND RELEASED IAW MEL 49-00-00 CATEGORY C-CONTROL 057571. IN RIC, REMOVED AND REPLACED APU STARTER/GENERATOR OPS CHECKED GOOD, NO DEFECTS NOTED, MEL ITEM CLEARED AND AIRCSDR CA050415001Starter · overheated(CAN) LOGBOOK SNAG STATED THAT THE APU WOULD NOT START. UPON INVESTIGATION IT WAS NOTED THAT THE APU STARTER HAD OVERHEATED AT BOTH TERMINAL CONNECTIONS. TERMINAL ENDS AND CABLE PROTECTION HEAT DAMAGED. NO INDICATION OF FIRE WARNING OCCURRED.SDR DLM88050204Starter · failedWHILE WORKING AN MCO FOR AN APU REPORT TO NOT START, IT WAS FOUND THAT THE APU STARTER HAD EITHER BURNT, OVERHEATED OR CAUGHT FIRE. THE STARTER CABLES WERE BURNT, AS WERE THE GENERATOR CABLES. THE STARTER ITSELF WAS CHARRED AND DISCOLORED, AS WAS NUMEROUS WISDR DXTA200500598Starter · failedUPON LANDING CREW SMELLED ELECTRICAL BURNING OF UNKNOWN ORIGINAL IN COCKPIT, NO SMOKE OBSERVED. NO SMELL IN CABIN, WINDSCREEN HEAT OFF. APU STARTER GENERATOR FOUND TO BE CAUSE OF PROBLEM.SDR DLM90050106Starter · failedAFTER APU START ELECTRICAL SMELL IN CABIN. APU STARTER FAILED. REPLACED APU STARTER.SDR DLM90050094Starter · inoperativeAPU WOULD NOT START. REPLACED APU STARTER AND START CONTROL RELAY. REPLACED WIRE AT B1-1058 PIN 5A.SDR SB05022Starter · faultyAT THE BEGINNING OF DESCENT INTO CLT, AN APU OVERSPEED OCCURRED RESULTING IN AN APU SHUTDOWN. THIS RESULTED IN A SINGLE GENERATOR OPERATION SINCE THE NR 1 ENGINE GENERATOR WAS ALREADY ON MEL. CREW COMPLIED WITH QUICK REFERENCE HANDBOOK PROCEDURES AND LANDED ASDR DLM90041120Relay · failedAPU SMOKED THE CABIN CAUSING AN EMERGENCY EVACUATION. REPLACED BAD APU STARTER AND START RELAY.SDR SIMA200435207Starter Gen · malfunctionedCREW REPORTED ELECTRICAL SMELL IN COCKPIT AFTER ATTEMPTED APU START WHICH FAILED. INSPECTED APU AND FOUND STARTER GENERATOR TO BE MAKING LOUD NOISES AND SPARKING ON START UP. MAINTENANCE REMOVED AND REPLACED THE STARTER/GENERATOR IAW MM. GROUND RUN WAS COMP
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