N474AS

Service difficulty reports · 244

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. 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 n_number = 'N474AS' AND registry_match = 'registration'
  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 ASAA2016121519051Sensor · faultedUNABLE TO CONTROL TEMP IN CABIN FROM ROW 6-11, EITHER TOO HOT OR TOO COLD. ACFT GROUNDED. PERFORMED NR 2 (RT) TEMP CONTROLLER BITE CHECK AND FOUND CABIN SENSOR ZONE FAULT IAW FIM 21-61 TASK 801. CLEANED CABIN TEMP SENSOR FILTERS IAW AMM 21-61-06 AND CLEANED CADec 15, 2016 · N474AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016112918884Satcom · lockedSATCOM LOCKED UP WHILE AIRBORNE. ACFT GROUNDED. ACCOMPLISHED RESET PROCEDURE PER QRH. SATCOM OPS RESTORED NORMAL.Nov 29, 2016 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2016110618583Shim · wornWHILE ACCOPLISHING T/C 78472002 FOR FAN BLADE LUBRICATION, FOUND THE FAN BLADE SHIM'S COATING TO WORN ON THE NR 1 ENGINE. ACFT GROUNDED. INSTALLED NEW FAN BLADE SHIMS IAW T/C 78472002. REPLACED ALL 24 FAN BLADE SHIMS ON THE NR 1 ENGINE.Nov 6, 2016 · N474AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2016092018093Probe · out of toleranceNR 2 ENGINE HAD ECONOMIC FAULT CODE 77-20872, TOP LT EGT SIGNAL OUT OF RANGE. ACFT GROUNDED. VERIFIED DISCREPANCY T49.5 INPUT MONITORING PAGE SHOWS S4 SHOWING DASHES. PERFORMED EGT SYSTEM INSPECTION, IAW AMM 77-21-01. FOUND S4 OUT OF TOLERANCE, IAW AMM 77-21Sep 20, 2016 · N474AS · Boeing 737990ER · Engine EGT/TIT Indicating SystemSDR ASAA2016091918076Satcom · lockedSWITCHING FROM GROUND TO APU POWER, SATCOM LOCKED UP. ACFT GROUNDED. ACCOMPLISHED SATCOM RESET PROCEDURE PER QRH. SATCOM OPS RESTORED NORMAL.Sep 19, 2016 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2016091918075Satcom · lockedSATCOM LOCKED UP. ACFT GROUNDED. ACCOMPLISHED SATCOM RESET PROCEDURE PER QRH. SATCOM OPS RESTORED NORMAL.Sep 19, 2016 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2016082617821Circuit Breaker · trippedNR 2 FUEL QTY CIRCUIT BREAKER (P6-3 A5) FOUND OUT DURING MAINTENANCE. ACFT GROUNDED. INSPECTED THE CIRCUIT BREAKER AND PANEL P6-3 IAW AMM 20-60-00. NO FAULTS NOTED. RESET THE CIRCUIT BREAKER, NORMAL INDICATION VERIFIED.Aug 26, 2016 · N474AS · Boeing 737990ER · Fuel Indicating SystemSDR ASAA2016082617810Warning Light · illuminatedLIGHT ILLUMINATED. ACFT GROUNDED. VERIFIED FAULT, ACCOMPLISHED FIM 24-31-801. MULTIPLE FAULTS DISPLAYED AND RESET. STATIC INVERTER FAULT REAPPEARED. CYCLED STATIC INVERTER CIRCUIT BREAKERS, BITE TESTED NORMAL AND LIGHT RESET. ALSO VERIFIED ELEC NORMAL WITAug 26, 2016 · N474AS · Boeing 737990ER · DC Generating SystemSDR ASAA2016081417704Eec · failedDURING NR 2 ENGINE START, WOULD NOT LIGHT OFF. FUEL FLOW WENT TO 1.2 TO .3 THEN TO 0000. IGNITION ON LEFT SIDE. ACFT GROUNDED. ACCOMPLISHED FIM TASK 74-21/801. AIRPLANE INPUT VOLTAGE FOR THE LEFT EXCITER IS OUT OF RANGE". VERIFIED 115VAC AT DP0101 PINS AAug 14, 2016 · N474AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2016080317602Unknown · unknownSATCOM LOCK-UP ON GROUND. FOLLOWED QRH PROCDURES AND SAT RESET. ACFT GROUNDED. VERIFIED SAT PROMPT SHOWS ON BOTH MCDU'S REF FIM 23-15, TASK 801.Aug 3, 2016 · N474AS · Boeing 737990ER · HF Communications SystemSDR ASAA2016071517397Satcom · malfunctionedDISPATCH AND MED LINK UNABLE TO HEAR OUR SATCOM TRANSMISSIONS ON EITHER SATCOM NR 1 AND 2. BOTH CAPT AND FO TRIED TRANSMITTING MULTIPLE TIMES. WE CAN HEAR THEM BUT THEY CAN'T HEAR US. GROUNDED - YES. ACCOMPLISHED SATCOM COMMUNICATION SYSTEM TEST, REF B737-900Jul 15, 2016 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2016071117372Wire Harness · failedACQUIRED FAULT CODE ON EEC BITE TEST NR 2 ENGINE. ACFT GROUNDED. FOUND NR 2 ENGINE EEC FAULTS LOGGED 75-10822 IN LEGS 4, 5, 6, 7, AND 10. NO CURRENT FAULTS ARE LOGGED. T25 READING T25 CH B = 21.23, T25 CH A= 21.30. ACCOMPLISHED FIM 75-33 TASK 801. T25 SIJul 11, 2016 · N474AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2016070417265Wire Harness · failedIAW TASK CARD 78273000, PERFORMED INTERROGATION TEST FOUND NR 2 ENGINE MESSAGE 75-10822. THE T25 SIGNAL IS OUT OF RANGE. ACFT GROUNDED. IAW FIM 75-33 T805, ACCOMPLISHED RESISTANCE CHECKS AT T25 SENSOR & DP0909 / DP1010. ALL CHECKED NORMAL. A & B CHANNELJul 4, 2016 · N474AS · Boeing 737990ER · Engine Fuel System WiringSDR ASAA2016070217244Sensor · failedFMC NR 2 ENGINE SHORT TIME FAULT MESSAGE 75-30802 T25 SIGNALS DISAGREE FLT LEG 0123 XXX. ACFT GROUNDED. REMOVED AND REPLACED PT25 SENSOR NR 2 ENGINE PER AMM 73-21-02-401.Jul 2, 2016 · N474AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2016062217135Eec · faultedWHILE ACCOMPLISHING T/C 78273000, FOUND NR 2 ENGINE FAULT CODE 75-30802, T25 SIGNALS DISAGREE, SHORT TERM. ACFT GROUNDED. REF ASSOCIATED LOGPAGE 11678055 WITH FAULT CODE 75-10822 WAS PRESENT ON NR 2 EEC IAW FIM 75-33, TASK 801, THIS IS AN INTERNAL EEC FAULT.Jun 22, 2016 · N474AS · Boeing 737990ER · Fuel Control/Turbine EnginesSDR ASAA2016061717069Eec · failedWHILE ACCOMPLISHING T/C 78273000, RECORDED FAULT CODE 75-30802 T25 SIGNALS DISAGREE SHORT TERM FAULT NR 2 ENGINE. ACFT GROUNDED. FOUND FAULT CODE 75-30802. R & R NR 2 ENGINE EEC. OPS CHECK GOOD, REF AMM 73-21-60. NO CURRENT FAULTS.Jun 17, 2016 · N474AS · Boeing 737990ER · Fuel Control/Turbine EnginesSDR ASAA2016061117021Connector · contaminatedWHILE ACCOMPLISHING T/C 78273000, FMC CDU FAULTS, FOUND NR 2 ENGINE FAULT CODE 75-10802, T25 SIGNAL DISAGREE, SHORT TERM. ACFT GROUNDED. REF L/P 11678020 FOR FAULT CODE 75-20802. REACCOMPLISHED T/C 78273000 FAULT CODE FOR NR 2 ENGINE 75-10802. NO LONGER PRJun 11, 2016 · N474AS · Boeing 737990ER · Engine Fuel System WiringSDR ASAA2016052516849Warning Light · false activationFUEL IMBALANCE ON CLIMBOUT, GOT CENTER TANK RT PUMP LOW PRESSURE LIGHT. STARTED GETTING IMBALANCE BETWEEN MAIN TANK 1 & 2. OPENED CROSSFEED & NOTED NR 1 ENGINE BURNING OFF CENTER TANK & NR 2 STILL BURNING OFF NR 2 MAIN TANK FUEL WITH 2000 LB IN CENTER. ONCEMay 25, 2016 · N474AS · Boeing 737990ER · Aircraft Fuel Distribution SystemSDR ASAA2016052316831Indicator · malfunctionedFUEL IMBALANCE LIGHT ILLUMINATED, IMBALANCE OF 1050 NOTED FOLLOWING BURN OFF OF CENTER TANK. ACFT GROUNDED. FUEL IMBALANCE CONDITIONAL INSPECTION WITHIN LIMITS REF AMM 05-51-48-801, TABLE 101. ACCOMPLISHED FUEL COMPARISON CHECK REF AMM 28-41-00-720-801, NO FMay 23, 2016 · N474AS · Boeing 737990ER · Fuel Indicating SystemSDR ASAA2016051616785Sensor · failedDURING TASK CARD 78273000, FOUND REPEAT FAULT OF 75-30802, T25 SIGNALS DISAGREE ON ENGINE NR 2. SHORT TIME FAULT. ACFT GROUNDED. R & R PT25 SENSOR ON NR 2 ENGINE, REF AMM 73-21-02 GROUND VERIFICATION TEST PASSED.May 16, 2016 · N474AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2016042916573Eec · failedWHILE PERFORMING T/C 78273000 FOUND FAULT CODE, 75-30802 T25 SIGNAL DISAGREE, SHORT TERM FAULT ON ENG NR 2, SN 862137. ACFT GROUNDED. TROUBLESHOOTING IAW FIM 75-33, TASK 805 T25 SIGNALS DISAGREE. T25 SENSORS IN TOLERANCE AND NO DAMAGE NOTED TO THE HARNESS OApr 29, 2016 · N474AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2016041816446Satcom · lockedSATCOM LOCKED UP. ACFT GROUNDED. ACCOMPLISHED SATCOM RESET PROCEDURE IAW QRH. SATCOM OPS NORMAL.Apr 18, 2016 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2016032416205Switching Unit · failedAFTER LANDING REV AMBER LIGHT ON NR 2 ENGINE DID NOT EXTINGUISH AND NR 2 REVERSER LIGHT ON AFT OVERHEAD PANEL ILLUMINATED. ACFT GROUNDED. REPLACED LT AUTOTHROTTLE SWITCHPACK, ALL OPS NORMAL. REF AMM 76-11-07, 30-11-00, 31-51-00, 32-42-00, 32-09-10, 78-31-00.Mar 24, 2016 · N474AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2016032216060Lens · brokenEMERGENCY LIGHT LAVATORY AREA FLOOD LIGHT INSTALLED ON AFT WINDSCREEN ADJACENT TO LAVATORY D HAS BROKEN LENS. ACFT GROUNDED. R & R LENS AND TESTED LIGHT ASSY IAW-900 AMM 33-51-01-960-801. OPS NORMAL.Mar 22, 2016 · N474AS · Boeing 737990ER · Emergency LightingSDR ASAA2016031015864Indicator · malfunctioned"HDG SEL" INDICATOR LIGHTS DO NOT ILLUMINATE WHEN SELECTED. ACFT GROUNDED. PERFORMED MCP PANEL LIGHTS TEST IAW AMM 22-11-00, TEST GRP 50. NO FAULTS NOTED AT THIS TIME.Mar 10, 2016 · N474AS · Boeing 737990ER · Autopilot SystemSDR ASAA2016030515748Satcom · malfunctionedNO SATCOM PROMPT ON MCDU. ACFT GROUNDED. ACCOMPLISHED SATCOM RESET PROCEDURES IAW QRH. SATCOM OPS NORMAL.Mar 5, 2016 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2016020415283Switch · failedHISTORY OF NR 2 ENGINE THRUST REVERSER LIGHT ON WHEN STOWED. ACFT GROUNDED. R & R NR 2 AUTO THROTTLE SWITCH PACK ASSY REF AMM 76-11-07-400-802-F00. ACCOMPLISHED ALL TESTS IAW AMM 76-11-07-400-802-F00. ALL TESTS PASS.Feb 4, 2016 · N474AS · Boeing 737990ER · Engine Thrust ReverserSDR ASAA2015123114587Module · malfunctionedMASTER CAUTION TEST, CONTROLLER CAB LIGHT, AIR COND AND MASTER CAUTION LIGHT REMAIN ILLUMINATED. WHEN RESET ALL LIGHTS TURN OFF. ACFT GROUNDED. PERFORMED BITE TEST ON PACK/ZONE TEMP CONTROLLERS NR 1 AND NR 2 REF FIM 21-62, TASK 801. FOUND FAULTS ON BOTH CONTDec 31, 2015 · N474AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2015122514449Warning Light · false activationZONE TEMP CONTROLLER CABIN ILLUMINATED ON RECALL, EXTINGUISHED WITH RESET. ACFT GROUNDED. GROUND VERIFICATION SUCCESSFUL, CONTROLLER BITE TEST CHECKS GOOD, REF AMM 21-21-00.Dec 25, 2015 · N474AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2015122314460Lens · missingEMERGENCY EXIT SIGN COVER MISSING NET TO L-2 LAV. ACFT GROUNDED. REPLACED LIGHT ASSY WITH NEW, OPS CHECK GOOD.Dec 23, 2015 · N474AS · Boeing 737990ER · Emergency LightingSDR ASAA2015121914326Warning Message · false activationFMC DISAGREE ON GROUND. ACFT GROUNDED. ACCOMPLISHED RESET PROCEDURE IAW QRH. FMC RESTORED NORMAL.Dec 19, 2015 · N474AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015111713785Battery Pack · failedFOLLOW-UP TO RECENT REPORTS OF BOTH SPAR VALVES CLOSED LIGHTS ON BRIGHT WITH VALVES CLOSED. ACFT GROUNDED. INSPECTED C1472, C359, AND C360. FOUND LOOSE TERMINAL AT C360. TIGHTENED 1 TURN ON LOAD SIDE. THE REST OF THE TERMINALS OK. DIODE R669 LOOKS OK, NO Nov 17, 2015 · N474AS · Boeing 737990ER · Aircraft Fuel Distribution SystemSDR ASAA2015111413766Warning Light · false activationUPON SHUTTING DOWN ENGINES, BOTH SPAR VALVES CLOSED LIGHTS REMAIN ON BRIGHT BLUE. ACFT GROUNDED. PERFORMED FIM TASK 28-22, TASK 809 AND FIM TASK 28-22, TASK 810 WITH NORMAL FUNCTION ON BOTH SPAR VALVES. NO BRIGHT BLUE LIGHTS ILLUMINATED AFTER TEST, OPS CHECKNov 14, 2015 · N474AS · Boeing 737990ER · Aircraft Fuel Distribution SystemSDR ASAA2015110613660Warning Light · false activationCONTROLLER CABIN ZONE TEMP LIGHT ILLUMINATED ON RECALL, EXTINGUISHED WITH RESET. ACFT GROUNDED. ACCOMPLISHED NR 2 PZTC BITE REF 21-61-00. FOUND FAULT FLT DECK TRIM VALVE ONE TIME. PERFORMED FIM 21-61, TASK 861. FAULTS CLEARED GROUND RAN AC SYS FOR 1 HOUR.Nov 6, 2015 · N474AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2015103113561Satcom · lockedSATCOM LOCKUP, ACFT GROUNDED. PERFORMED QRH PROCEDURE 5.3 SATCOM RETURNED TO NORMAL.Oct 31, 2015 · N474AS · Boeing 737990ER · Communications SystemSDR ASAA2015101913442Warning Light · false activationAPU FAULT LIGHT ILLUMINATED DURING APU START ATTEMPT WHILE TAXIING. LIGHT EXTINGUISHED WHEN APU START SWITCH TURNED OFF IAW QRH. ACFT GROUNDED. ACCOMPLISHED FIM 49-40-821 STEP E, FOUND 1 INSTANCE OF 49-41254, 5 STARTS OLD. ACCOMPLISHED 3 APU STARTS, NO FAULTOct 19, 2015 · N474AS · Boeing 737990ER · Airborne Auxiliary Power Unit (APU) SystemSDR ASAA2015092013135Controller · malfunctionedRT PACK PRIMARY PACK CONTROL INOPERATIVE. ACFT GROUNDED. PERFORMED PACK/ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-61-00, GREEN GO LIGHT ILLUMINATED. OPS NORMAL.Sep 20, 2015 · N474AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2015082812953Warning Message · false activationFMC DISAGREE ANNUNCIATION ILLUMINATED AFTER ENGINE START. ACFT GROUNDED. PERFORMED QRH PROCEDURE. NORMAL FMC OPERATION RESTORED.Aug 28, 2015 · N474AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015082112966Fmc · malfunctionedCRUISE WINDS WOULD NEVER LOAD. REQUEST PROMPT STAYED ILLUMINATED ENTIRE FLIGHT. ACFT GROUNDED. NO FAULTS LOGGED ON BOTH LT & RT FMC'S. ACCOMPLISHED GROUND VERIFICATION TEST FOR BOTH LT AND RT FMC'S REF MM 34-36-00.Aug 21, 2015 · N474AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015081712912Warning Light · illuminatedAPU BLUE MAINTENANCE LIGHT ILLUMINATED. ACFT GROUNDED. PERFORMED APU BITE PROCEDURE REF FIM 49-60, TASK 801. NO FAILURES FOUND ON CURRENT STATUS PAGE AND FAULT HISTORY PAGE. MAINTENANCE HISTORY PAGE SHOWED MESSAGES 49-91227, LOW OIL QUANTITY LOW, 49-72207 MAug 17, 2015 · N474AS · Boeing 737990ER · Airborne Auxiliary Power Unit (APU) SystemSDR ASAA2015073112652Outflow Valve · unknownAFTER LANDING, OUTFLOW VALVE WAS IN THE CLOSED POSITION WHILE SWITCH WAS IN AUTO MODE. ACFT GROUNDED. ACCOMPLISHED PRESSURIZATION CONTROL BITE AMM 21-31-00. OPS CHECKED NORMAL NO FAULTS FOUND. DID A VISUAL INSPECTION OF THE OUTFLOW VALVE FOR OPERATION AND OJul 31, 2015 · N474AS · Boeing 737990ER · Pressure Regulator/Outflow ValveSDR ASAA2015072812623Fmc · failedAT CRUISE ALTITUDE OF 34000 FT, .78 MACH, AT APPROXIMATELY 0112Z, VTK FLAG ON CAPTAINS SIDE FOLLOWED BY DUEL MCDU BLANKING AND LOSS OF LT NAV TRACK. F/O SIDE WAS MASTER, VTK FLAG THEN RESOLVED ITSELF WITH NO PILOT ACTION AND MCDU'S RECOVERED. FMC FLIGHT PLANJul 28, 2015 · N474AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015072712606Warning Message · false activationAPU OIL QUANTITY READS "ADD". ACFT GROUNDED. RAN APU SHUTDOWN, CONFIRMED SIGHT GAUGE READS FULL. CONFIRMED CDU READS FULL, REF 49-61-00-700-801.Jul 27, 2015 · N474AS · Boeing 737990ER · APU Oil SystemSDR ASAA2015071712463Filter · dirtyF/A REPORTS HOT ZONE ROW 6-14, NEVER COOLED OFF WHILE FWD AND AFT CABIN FREEZING. ACFT GROUNDED. ACCOMPLISHED FIM TASK 21-62, TASK 801, PERFORMED PACK TEMP CONTROLLER BITE CHECK NO FAULTS FOUND. CLEANED FWD AND AFT CABIN TEMP SENSOR FILTERS REF AMM 21-61-10-Jul 17, 2015 · N474AS · Boeing 737990ER · Cabin Temperature Control System
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