JASC 4960

Service difficulty reports · 383

Reports filed under 4960 · APU Controls, 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 = '4960'
  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 UIEA2018062501237Ecu · malfunctionedAPU INOP. R&R APU ECU, PERFORMED APU BITE, NO DEFECTS NOTED AT THIS TIME AS PER AMM 49-61-05.Jun 24, 2018 · N1181A · Boeing 7673Y0SDR UIEA2018062601255Control Unit · faultyAPU FAULT MSG, TWO ATTEMPTS, NO START. REMOVED AND REPLACED APU CONTROL UNIT IAW AMM 49-61-05-404-008.Jun 23, 2018 · N1997A · Boeing 76733ASDR ASAA2018061985117Ecu · faultedAPU ECU FAULT CODE 49-61145 FOUND DURING TSR701868. ACFT GROUNDED. PERFORMED FIM 49-60, TASK 802, REQUIRES REPLACEMENT OF APU ECU. REMOVED APU ECU IAW AMM 49-61-12-000-801 AND REPLACED APU ECU IAW AMM 49-61-12-400-801 STEPS 3A -E(2) . ACCOMPLISHED AMM 49-61-Jun 18, 2018 · N512AS · Boeing 737890SDR AALA2018042009033Switch · faultedENROUTE TO CLE, LEFT ENGINE OUTLET AND RISE WENT TO FULL SCALE HIGH. DISCONNECTED THE CONSTANT SPEED DRIVE. NR 1 GENERATOR FAILURE AND APU WOULD NOT START. EMERGENCY WAS DECLARED, FLIGHT DIVERTED AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED CENTRIFUGAL Apr 16, 2018 · N9621A · Doug MD83SDR ASAA2018031123833Ecu · faultedCREW ATTEMPTED APU START - FAULT LIGHT ILLUMINATED. INTERROGATED CDU FOUND FAULT CODE 49-41011 <NO FLAME SHUT DOWN>. GROUNDED - YES. ACCOMPLISHED APU BITE PER FIM 49-60 TASK 801. CURRENT STATUS SHOWS FAULT 49-94304 OIL LEVEL SENSOR FAULTY. ALSO FOUND FAULT CODMar 11, 2018 · N586AS · Boeing 737890SDR ASAA2018020623437Ecu · faultedAPU TREND DATA SHOWS CT5ATP TEMP SPIKE THAT MAYBE CAUSED BY ECU SOFTWARE. ACFT GROUNDED. REMOVED AND REPLACED THE APU ECU IAW AMM 49-61-12-000-801, AND 49-61-12-400-801. OPS CHECKED GOOD.Feb 6, 2018 · N407AS · Boeing 737990ERSDR HALA2018012500012Control Unit · faultyETOPS SIGNIFICANT SYSTEM - APU FAULT 1ST APU START ATTEMPT. 2ND APU START OK AFTER LANDING. BITE CHECK NO FAULT NOTED. CONDITION SAME, CHANGED IGNITER PER AMM 49-41-02-404-406, CONDITION SAME. REPLACED APU CONTROL UNIT PER AMM 49-61-05-404-008. NO FAULT NOTED.Jan 24, 2018 · N592HA · Boeing 7673CBSDR HALA2018012500011Ecu · failedDURING CLIMB OUT, RECEIVED APU FAULT EICAS MESSAGE DURING AN APU VERIFICATION FLIGHT. FAILED VERIFICATION. COMPLIED WITH QRH APU STARTED. PERFORMED APU BITE TEST SHOWS P2 SENSOR ON SUMMARY, MINI FLAG 16, REMOVED AND REPLACED THE ECU IAW AMM 49-61-05-004-Jan 24, 2018 · N592HA · Boeing 7673CBSDR ASAA2018011223165Sensor · faultedAPU FAULT LIGHT AFTER SHUTDOWN. ACFT GROUNDED. FOUND FAULT CODE 49-61223. ACCOMPLISHED VISUAL INSPECTION OF THE TAILCONE AREA. NO EVIDENCE OF DAMAGE. ACCOMPLISHED FIM 49-60-812. INITIAL EVALUATION SHOWED NO CURRENT FAULTS. UNABLE TO INDUCE FAULTS DURING HAJan 12, 2018 · N467AS · Boeing 737990ERSDR ASAA2017120522805Sensor · malfunctionedOVERSPEED ILLUMINATED DURING APU START ATTEMPT. GROUNDED - YES. PERFORMED APU BITE REF B737-900 FIM 49-60 TASK 801, FAULT HISTORY SHOWS APU OVERSPEED MSG 49-31014 AND MAINT MSG 49-61262 ON CORRESPONDING PREVIOUS STARTS 0,24,136. PERFORMED FIM 49-60 TASK 817, NDec 5, 2017 · N491AS · Boeing 737990ERSDR ASAA2017120522786Sensor · faultedAPU FAULT LIGHT ILLUMINATED APU AUTO SHUT DOWN. GROUNDED - YES. PER B737-900 FIM 49-50 TASK 801 REMOVED & REPLACED DELTA PRESSURE SENSOR REF B737-900 AMM 49-52-33. OPS CK GOOD. APU RUNS & DOES NOT AUTO SHUTDOWN. BLEED AIR OPERATIVE. NO FAULTS FOUND IN CURRENT Dec 5, 2017 · N442AS · Boeing 737990ERSDR ASAA2017120522785Ecu · faultedWHILE T/S APU FOUND FAULT CODE 49-72105 DMM SHOWS CIRCUIT FAILURE IN MAINT HISTORY STATS 3-25. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 49-70 TASK 808. RMVD AND INSTALLED NEW APU ECU REF 49-11-01 AND 49-61-12. ACCOMPLISHED INSTALL TESTS REF 49-61-12. ALL TESTDec 5, 2017 · N493AS · Boeing 737990ERSDR ASAA2017112422738Control Unit · failedDUE TO EXTENSIVE HISTORY OF "NO" OR "LOW" DUCT PRESS AND PREVIOUS PARTS CHANGES TECH SERVICE REQUEST THE FOLLOWING BE ACCOMPLISHED. GROUNDED - YES. REMOVED AND REPLACED SURGE CONTROL VALVE IAW B737-800 AMM 49-52-41. PERFORMED SURGE CONTROL VALVE INSTALLATION TNov 24, 2017 · N514AS · Boeing 737890SDR UIEA2017112102279Control Unit · malfunctionedAPU CONTROL UNIT RPM LOW MALFUNCTIONED. REMOVED & REPLACED APU CONTROL UNIT IAW 49-61-05, OPS CHECKED GOODNov 18, 2017 · N1997A · Boeing 76733ASDR ASAA2017101322200Sensor · faultedAPU STARTED AFTER LANDING. PUT GENERATOR ON LINE. A MINUTE LATER, THE APU AUTOMATICALLY SHUTDOWN. ACFT GROUNDED. REMOVED AND REPLACED APU SPEED SENSOR ASSY IAW AMM 49-61-21. ACCOMPLISHED APU STARTING AND OPERATION, NO LEAKS NOTED. LOADED APU, NO FAULTSOct 13, 2017 · N474AS · Boeing 737990ERSDR ASAA2017092522049Ecu · failedAPU BLEED AIR DUCT PRESSURE IS VERY LOW (8 PSI) AND NOT COOLING THE MAIN CABIN SUFFICIENTLY. GROUNDED - YES. TROUBLESHOT PER FIM 49-53. WIRING CHECKS GOOD. REMOVED AND REPLACED APU ECU, REF AMM 49-61-12. OPS CHECKS GOOD.Sep 25, 2017 · N435AS · Boeing 737990ERSDR IPXA2017091221615Actuator · inoperativeAPU INTAKE DOOR ACTUATOR SYS INOPERATIVE.Sep 12, 2017 · N327UP · Boeing 76734AFSDR UIEA2017082201522Ecu · faultyAPU AUTO SHUTDOWN. REMOVED AND REPLACED APU ECU IAW AMM 49-61-05. PERFORMED BITE TEST NO FAULT NOTED.Aug 22, 2017 · N649GT · Boeing 767375SDR HALA2017081600224Ecu · unknownAPU FAILED, ATTEMPTED 1 RESTART, SUSPECT BFS ECU APU BITE FAULTED ECU 20 PLUS MINI FAGS. REMOVED AND REPLACED APU ECU IAW AMM 49-61-05, OPS CHECKED GOOD.Aug 15, 2017 · N580HA · Boeing 76733ASDR UIEA2017072701324Ecu · malfunctionedINFO ONLY APU COLD SOAK START UNSUCCESSFUL APU FAULT MSG ON THREE ATTEMPTS FL 380 SAT -45. PERFORMED BITE PROCEDURE ON APU ECU IAW FIM 49-11 FT 958 NO FAULTS NOTED, RESET APU ECU, APU START NORMAL.Jul 25, 2017 · N649GT · Boeing 767375SDR HALA2017071900200Ecu · faultyVERIFICATION FLIGHT FOR APU FAILED. REPLACED APU ECB PER AMM 49-61-34. OPS CHK OK.Jul 17, 2017 · N374HA · Airbus A330243SDR UIEA2017062301054Ecu · faultedAPU FAULT ANNUNCIATED. R & R THE ECU IAW 49-61-05. OPERATIONAL CHECKED NORMAL.Jun 21, 2017 · N1997A · Boeing 76733ASDR ASAA2017052720901Sensor · faultedAPU FAULT LIGHT ILLUMINATED AFTER APU SHUTDOWN. ACFT GROUNDED. FOUND MESSAGE 49-61223, TROUBLESHOT IAW FIM 49-60, TASK 812, REMOVED AND REPLACED INLET TEMP SENSOR IAW AMM 49-61-31, OPS CHECK NORMAL. APU STARTED SUCCESSFULLY 3 TIMES.May 27, 2017 · N479AS · Boeing 737990ERSDR ASAA2017052720898Sensor · faultedRECEIVCED A FAULT LIGHT WHEN STARTING THE APU. ACFT GROUNDED. CONFIRMED FAULT, APU FAULT LIGHT COMES ON & REMAINS ILLUMINATED WHEN APU STARTED. APU CURRENT STATUS & FAULT HISTORY PAGE SHOW NUMEROUS FAULT MESSAGES 49-61223 FOR INLET TEMPERATURE SENSOR SHOWS SMay 27, 2017 · N536AS · Boeing 737890SDR ASAA2017051720813Ecu · failedON APU START, A FAULT LIGHT ILLUMINATED. APU ECU INOPERATIVE. ACFT GROUNDED. ACCOMPLISHED APU BITE IAW TASK 49-60, TASK 801. LOGGED ECU FAILED. REMOVED AND REPLACED THE APU ECU IAW AMM 49-61-12 . GROUND VERIFICATION CHECKED OK.May 17, 2017 · N477AS · Boeing 737990ERSDR UIEA2017051100777Ecu · malfunctionedAPU FAILED TO START (3) ATTEMPTS HANG START OBSERVED. ACCOMPLISHED APU ECU BITE AS PER AMM 49-61-05 AND NO FAULTS NOTED. RESET ECU AND APU STARTER FIRST ATTEMPT AND OPS CK AS PER AMM 49-11-00.May 11, 2017 · N640GT · Boeing 7673S1SDR UIEA2017050400710Control Unit · faultyAPU BLEED AIR DOES NOT INCREASE. APU CONTROL UNIT REPLACED PER AMM 49-61-05.Apr 30, 2017 · N1229A · Boeing 767306SDR UIEA2017041100538Ecu · malfunctionedUNABLE TO START APU, PERFORMED FIM 49-11 TREE 958 NO FAULTS NOTED. RE RACK APU ECU IAW AMM 49-61-05. APU OPS CKS NORMAL. APU START SUCCESSFULLY.Apr 11, 2017 · N1049A · Boeing 76736NSDR ASAA2017032520297Ecu · failedAPU ON & RUNNING, ASSOCIATED AIR SWITCHES IN CORRECT POSITION BUT ZERO AIR FLOW TO & FROM EITHER LEFT OR RIGHT PACK. ACFT GROUNDED. APU FAULTS 49-61259, 49-61262, & 49-52270. R & R ECU IAW AMM 49-61-12/401. PERFORMED OPS CHECK OF APU. WITH APU ON CHECKMar 25, 2017 · N442AS · Boeing 737990ERSDR ASAA2017030119984Warning Light · false activationAPU FAULT LIGHT ILLUMINATED TWICE AS REPORTED BY FLIGHT CREW. ACFT GROUNDED. ACCOMPLISHED FIM 49-60 TASK 801, NO CURRENT FAILURE NOTED, ALL OPERATIONS & INDICATIONS NORMAL, NO RECENT HISTORY.Mar 1, 2017 · N472AS · Boeing 737990ERSDR ASAA2017020619726Sensor · contaminatedON APU SHUT DOWN, APU FAULT LIGHT ILLUMINATED. WAITED 5 MINUTES AND FAULT LIGHT EXTINGUISHED. TRIED TO START APU TWICE AND BOTH TIMES APU FAILED TO START AND FAULT LIGHT ILLUMINATED. GROUNDED - YES. ACCOMPLISHED FIM 49-60 TASK 801 & 49-60 TASK 812. REMOVED INLFeb 6, 2017 · N568AS · Boeing 737890SDR ASAA2016123119219Ecu · faultyAPU CAME ON LINE WITH ELECTRIC NO BLEED AIR. GROUNDED - YES. REMOVED AND REPLACED APU ECU REF AMM 49-61-12,OPS CHECK NORMAL. VERIFIED WITH TECH SERVICE INSTALLED SOFTWARE IS VERSION 4 OR LATER. THIS CLEARS MEL 49-7C.Dec 31, 2016 · N517AS · Boeing 737890SDR GLBA2016113000620Relay · burnedSIG EVENT - PILOT REPORTED THAT ON ENGINE SHUTDOWN HAD PUFF OF ELECTRIC SMOKE FROM APU AUX RELAY BOX IN COCKPIT. MAINTENANCE FOUND THAT THE APU STARTER RELAY WAS BUNT AND FEEDER PROTECT RELAY, R&R RELAY AND FEEDER CABLE, OPS CK GOOD.Nov 29, 2016 · N293UX · Emb EMB120ERSDR AALA20161129007Switch · faultyAIRCRAFT WAS GROUNDED. APU EXPERIENCED HUNG START. NO EGT RISE OBSERVED. RIGHT PACK WAS OPERATING AT THE TIME. CABIN WAS INUNDATED WITH FUEL FUMES. REMOVED AND REPLACED CENTRIFUGAL SWITCH IAW AMM 49-60-01. OPERATIONAL CHECK GOOD.Nov 21, 2016 · N9625W · Doug DC983SDR UIEA2016110500830Ecu · failedAPU RELIABILITY COLD START, THREE ATTEMPTS UNSUCCESSFUL. REMOVED AND REPLACED APU ECU IAW AMM 49-61-05, OPS CHECKED GOOD, NO FAULTS INDICATED.Nov 5, 2016 · N645GT · Boeing 767324SDR ASAA2016101318344Sensor · faultedAPU FAULT LIGHT ON AFTER APU START ATTEMPT. ACFT GROUNDED. VERIFIED DISCREPANCY. FOUND FAULT 49-61223 LOGGED. ACCOMOPLISHED FIM 49-60 TASK 812. FOUND INLET SENSOR INOPERATIVE IAW AMM 49-61-31. R & R THE INLET SENSOR. PERFORMED APU BITE 49-60 TASK 801. FAULTOct 13, 2016 · N560AS · Boeing 737890SDR ASAA2016100418380Ecu · failedFDR SYSTEM PARAMETER REASONABILITY CHECK SHOWS A PROBLEM WITH THE APU ECU FAULT DISCRETE SHOWING FAULT. ACFT GROUNDED. REMOVED AND REPLACED APU ECU, INSTALLATION CHECKS GOOD IAW AMM 49-61-12, APU DIGITAL DATA BUSS SIGNAL TEST CHECKED GOOD IAW AMM 31-31-00. POct 4, 2016 · N564AS · Boeing 737890SDR UIEA2016090300730Warning Message · activatedAPU BITE MESSAGE ON MAINT PAGE AND APU OIL SERVICE CHECK REQUIRED. APU BITE C/W IAW AMM 49-61-05 AND RESET OK FOR SERVICE, CHECKED APU OIL AND OK FOR SERVICE IAW AMM 12-13-04.Aug 31, 2016 · N640GT · Boeing 7673S1SDR ASAA2016082317787Warning Light · illuminatedAPU FAULT LIGHT ILLUMINATED DURING START ATTEMPT. LIGHT EXTINGUISHED ONE MINUTE AFTER SWITCH TURNED OFF. NO SUBSEQUENT START ATTEMPTED. ACFT GROUNDED. PERFORMED APU BITE, FOUND MESSAGE 49-41012, NO ROTATION SHUTDOWN. INSPECTED MAGNETIC CHIP DETECTOR, IAW AAug 23, 2016 · N513AS · Boeing 737890SDR FDEA201608022756Ecu · failedAPU SHUTDOWN IN FLIGHT WITH FAULT LIGHT. ATTEMPTED ONE RESTART, THEN RETURNED TO DEPARTURE DUE TO SINGLE GENERATOR OPS. R & R ECU. ACCOMPLISHED 3 NORMAL SUCESSFUL STARTS WITH APU PNEUMATIC AND ELECTRICAL SYSTEMS, OPS CHECKING NORMAL.Aug 2, 2016 · N776FD · Boeing 757222SDR ASAA2016070117237Ecu · faultedCURRENT STATUS FOR THE APU SHOWS MAINT MESSAGE 49-61259 SPEED SENSOR 1 SHOWS OPEN CIRCUIT ACFT GROUNDED. APU TROUBLESHOT IAW FIM 49-60 TASK 817 AND WDM 49-62-12. ECU REMOVED AND REPLACED IAW AMM 49-61-12. OPS CHECKED GOOD.Jul 1, 2016 · N506AS · Boeing 737890SDR ASAA2016062417155Sensor · faultyAPU CURRENT STATUS SHOWS MAINT MSG 49-61262. SPEED SENSOR 2 SHOWS OPEN CIRCUIT. ACFT GROUNDED. CONFIRMED FAULT, APU BITE, REF AMM 49-61-00-700-801 SHOWS CURRENT STATUS FAULT AND FFR SHOWS NUMEROUS APU SPEED SENSOR 2 FAULT MSG 49-61262. R & R SPEED SENSOR RJun 24, 2016 · N577AS · Boeing 737890SDR ASAA2016062317154Module · failedAPU MAINTENANCE LIGHT ILLUMINATED. ACFT GROUNDED. FOUND MAINTENANCE LIGHT FOR LOG ON, ON APU ID CONFIGURATION, PAGE 2. PERFORMED LOW OIL QUANTITY BITE DEACTIVATION REF AMM 49-61-00-040-801. REQUIRES DMM TO BE R & R DUE TO NR OF FAILURES LOGGED AS MAINTENANJun 23, 2016 · N486AS · Boeing 737990ERSDR ASAA2016051716775Sensor · failedAPU FAULT LIGHT ILLUMINATED AFTER APU SHUTDOWN AT CONCLUSION OF ENGINE START. ACFT GROUNDED. R & R INLET TEMP SENSOR. OPS CHECK GOOD REF AMM 49-61-31.May 17, 2016 · N477AS · Boeing 737990ERSDR ASAA2016051516744Sensor · failedAPU FAULT ILLUMINATED AFTER APU WAS SHUTDOWN ON THE AFTER START FLOW WITH BOTH ENGINES STARTED. ACFT GROUNDED. REPLACED APU TEMP SENSOR IAW AMM 49-61-31. OPS CK GOOD. NOT A START FAULT. APU GROUND VERIFICATION NORMAL.May 15, 2016 · N532AS · Boeing 737890SDR ASAA2016050416640Module · failedAFTER LANDING ATTEMPTED, APU START FAILED. INDICATED "FAULT". ACFT GROUNDED. TROUBLESHOOT IAW FIM 49-70, TASK 808, STEP 7 AND STEP 8. REPLACED ECU, REF AMM 49-61-12. REPLACED DATA MEMORY MODULE, REF AMM 49-72-11. OPS TEST NORMAL, GROUND VERIFICATION SUCCEMay 4, 2016 · N471AS · Boeing 737990ERSDR ASAA2016050116612Sensor · failedREVIEW OF APU TREND DATA SHOWS THAT THE CT5 ATP TEMPERATURE IS BELOW 593 BUT THE TRENDS HAVE NOT RETURNED TO THE PREVIOUS LEVELS. ACFT GROUNDED. REPLACED APU INLET TEMP SENSOR REF AMM 49-61-31/401. INSTALLATION TEST GOOD AT THIS TIME.May 1, 2016 · N435AS · Boeing 737990ERSDR ASAA2016041416419Warning Light · illuminatedAPU FAULT LIGHT CAME ON AFTER START ATTEMPT, AFTER LANDING. IAW QRH ATTEMPTED ANOTHER START AFTER 5 MINS. AND FAULT LIGHT EXTINGUISHED. FAULT LIGHT ILLUMINATED AGAIN AFTER SECOND START ATTEMPT. ACFT GROUNDED. CLEARED FAULT IAW FIM, OPS CHECK NORMAL AT THIS Apr 14, 2016 · N448AS · Boeing 737990ERSDR ASAA2016040616267Resolver · failedCSS FAIL MSG RECEIVED. ACFT GROUNDED. APU MAINTENANCE HISTORY HAS FAULT CODE 49031175, FCU RESOLVER CIRCUIT SHOWS BAD, LOGGED 18 TIMES IN THE LAST 20 STARTS. OLDEST BEING 158 STARTS AGO STARTING ON MAR 09, 2016. FAULT HISTORY, MAINT MESSAGE 49-31016, OVERTEApr 6, 2016 · N581AS · Boeing 737890SDR ASAA2016040316229Engine · malfunctionedSTARTED NR 2 ENGINE N2 MAX 20 PERCENT. ABORTED START ATTEMPT. NR 1 ENGINE AT N2 OF 20 PERCENT, ELECTRONICS QUIT, APU SPEED WAS NORMAL ON NR 1 START UNTIL ABORT DUE TO APU ELECTRONICS DROPPING OFFLINE. ACFT GROUNDED. PERFORMED APU BITE PROCEDURE IAW FIM 49-Apr 3, 2016 · N434AS · Boeing 737990ER
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