N478AS

Service difficulty reports · 188

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 = 'N478AS' 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 ASAA2017042720550Control Valve · faultedREPLACE LEFT TCV DUE TO RECENT HISTORY OF LEFT PACK LIGHT. ACFT GROUNDED. REMOVED AND REPLACED THE LT TEMPERATURE CONTROL VALVE IAW AMM 21-51-10-000-801, AND 21-51-10-400-801. ACCOMPLISHED LT TEMP CONTROL VALVE INSTALLATION TEST, NO LEAKS OR FAULTS NOTED.Apr 27, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042620537Coupling · brokenON DESCENT LEFT PACK LIGHT ON RECALL. EXTINGUISHED WITH MASTER CAUTION RESET. ON TAXI IN LEFT WING BODY OVERHEAT LIGHT FOLLOWED BY LEFT PACK LIGHT WOULD NOT RESET. ACFT GROUNDED. ACCOMPLISHED OVERHEAT DETECTION SYSTEM BITE TEST - SHOWED FAULT 24 - LEFT A/C BAApr 26, 2017 · N478AS · Boeing 737990ER · Air Distribution SystemSDR ASAA2017042520579Acm · failedAT 3,5000 LEFT PACK LIGHT ILLUMINATED. RESET LEFT PACK IAW QRH. PACK LIGHT EXTINGUISHED. THIS SEQUENCE WAS REPEATED 3 MORE TIMES SO WE SHUT DOWN LEFT PACK. LEFT PACK TEMP GOT TO 60 DEGREE COMPARED WITH 10 DEGREE FOR RIGHT PACK. GROUNDED - YES. R&R LT PACK FLOWApr 25, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042520531Acm · failedAT 3,5000 FEET LEFT PACK LIGHT ILLUMINATED. RESET LEFT PACK IAW QRH. PACK LIGHT EXTINGUISHED. THIS SEQUENCE WAS REPEATED 3 MORE TIMES SO WE SHUT DOWN LEFT PACK. LEFT PACK TEMP GOT TO 60 DEGREES COMPARED WITH 10 DEGREES FOR RIGHT PACK. ACFT GROUNDED. REMOVED THApr 25, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042320518Sensor · failedLEFT PACK LIGHT ILLUMINATED DURING RECALL, LIGHT WENT OUT WHEN MASTER CAUTION RESET PUSHED. ACFT GROUNDED. ACCOMPLISHED BITE ON THE NR 2 PACK ZONE TEMP CONTROLLER & RECEIVED FAULT ON EXIT LIGHT. REMOVED AND REPLACED THE LT RAM AIR INLET ACTUATOR IAW AMM 21Apr 23, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042320517Actuator · failedPACK LIGHT ILLUMINATED, EXTINGUISHES ON RESET. ACFT GROUNDED. PERFORMED LEFT PZTC BITE IAW AMM TASK 21-61-00. FOUND LEFT INLET ACTUATOR FAILED. REPLACED LEFT INLET ACTUATOR AND RAM AIR CONTROL TEMP SENSOR. PZTC BITE TESTED GOOD. LT PACK CONTROL OPS NORMAL.Apr 23, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042220510Light · inoperativeL1 DOOR EXTERIOR EMERGENCY EXIT LIGHT INOP. GROUNDED - YES. REMOVED AND REPLACED L1 DOOR EXTERIOR EMERGENCY LIGHT IAW AMM 33-51-04-960-801, TEST GOOD IAW AMM 33-51-04-960-801.Apr 22, 2017 · N478AS · Boeing 737990ER · Emergency LightingSDR ASAA2017042220494Unknown · malfunctionedSHORTLY AFTER REACHING FLIGHT LEVEL 340, FUMES WERE OBSERVED SIMILAR TO SOMETHING HOT. THEN LEFT PACK LT ILLUMINATED. COMPLIED WITH QRH; PACK LT OUT W/ TRIP RESET; MASTER CAUTION RESET PACK LT OUT; FUMES WERE OBSERVED AGAIN; LEFT PACK LIGHT LT ILLUMINATED; SUCApr 22, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017042020508Module · faultyFDR REASONABILITY REPORTS APU ANY FAULT DETECTED DISCRETE PARAMETER SHOWS 'FAULT' GROUNDED - YES. ACCOMPLISHED TSR818449 - NO FAULTS FOUND. RMVD AND INSTALLED NEW DATA MEMORY MODULE REF AMM 49-72-11. PERFORMED SYS OPS TEST REF AMM 49-72-11-400-801. SYS CKS NMLApr 20, 2017 · N478AS · Boeing 737990ER · APU Indicating SystemSDR ASAA2017040920407Acm · damagedLEFT PACK INOP GROUNDED - YES. FOUND COMPRESSOR BLADE FRAGMENT IN LEFT PACK PLENUM, SUSPECTED BAD ACM. REMOVAL, REPLACEMENT, AND OPS CHECK OF LEFT PACK ACM ACCOMPLISHED ON CUSTOMER CARD G0851137. PERFORMED SHORT TO GROUND TEST IAW FIM TASK 21-53 TASK 801 STEP Apr 9, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017040620383Warning Light · false activationAFTER BOTH ENGINES STARTED, LEFT PACK LIGHT ILLUMINATED. FOLLOWED QRH PROCEDURE AND THE PACK LIGHT WENT OUT FOR A FEW SECONDS, THEN CAME BACK ON AGAIN AND COULD NOT EXTINGUISH THE PACK LIGHT. THE PACK TEMPERATURE SHOWS OVERHEAT. ACFT GROUNDED. REVERSED IAW AApr 6, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017040520370Warning Light · false activationLEFT PACK LIGHT ILLUMINATED ON RECALL. ACFT GROUNDED. RECONNECTED LEFT PACK FLOW CONTROL VALVE CONNECTOR. OPENED FWD CARGO HEAT DUCT IAW AMM 21-00-00-440-801. ACCOMPLISHED BITE CHECK OF PACK ZONE TEMP CONTROLLERS IAW AMM 21-61-00-700-806-002. WITH & WITHOUTApr 5, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017040420357Actuator · failedLEFT PACK LIGHT ILLUMINATED ON RECALL, EXTINGUISHED ON RESET. ACFT GROUNDED. PERFORMED LT PACK ZONE TEMP CONTROLLER BITE IAW AMM 21-61-00. FAULTING EXIT RAM AIR ACTUATOR. REMOVED AND REPLACED LT RAM AIR EXHAUST ACTUATOR IAW AMM 21-51-27. ALL TESTS PASSED. NApr 4, 2017 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017012919584Unknown · malfunctionedHF-1 FAILED. GROUNDED - YES. ACCOMPLISHED VHF COMM CONTROL PANEL RESET - HF INDICATIONS NORMAL WITH NO FURTHER DISCREPANCIES NOTED. HF FUNCTION NORMAL, REF AMM 23-12-00 & 23-11-00.Jan 29, 2017 · N478AS · Boeing 737990ER · HF Communications SystemSDR ASAA2016112318818Light · inoperativeFWD OVERWING EMERGENCY EXIT EXTERIOR LIGHT INOP. GROUNDED - YES. REMOVED AND REPLACED RT FWD OVERWING EXIT LIGHT BULB REF AMM 33-51-04.Nov 23, 2016 · N478AS · Boeing 737990ER · Emergency LightingSDR ASAA2016102018435Control Panel · malfunctionedAUTOPILOT LIGHTED DIGITS FOR CRS SPD HDG ALT DO NOT DIM ALL OTHER A/P LIGHTS OPERATE NORMALLY. ACFT GROUNDED. REPLACED DFCS MODE CONTROL PANEL, IAW AMM 22-11-34. INSTALLATION TESTED NORMAL.Oct 20, 2016 · N478AS · Boeing 737990ER · Autopilot SystemSDR ASAA2016081417702Fmc · failedDURING DESCENT, LEFT FMC FAILED WITH NO FMC DATA ON CA NAV DISPLAY IN MAP AND NO FMC DATA ON BOTH CDU'S. APPROXIMATELY 30 SECONDS LATER, SYSTEM AUTOMATICALLY RETURNED TO NORMAL OPS AND NO FURTHER INCIDENT FOR REMAINDER OF THE FLIGHT. ACFT GROUNDED. REMOVED &Aug 14, 2016 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016080817647Eec · failedFAULT CODE NR 2 ENGINE 73-21272 ALTERNATOR VOLTAGE INPUT TO THE EEC OUT OF RANGE SHORT TERM FAULT FLIGHT LEGS 0, 1, 5, 10. ACFT GROUNDED. ACCOMPLISHED EEC BITE ON NR 2 ENGINE AND VERIFIED FAULT CODE 73-21272 IS ACTIVE ON LEG 0. PROCEDURE USED IAW CHAPTER 5 TAAug 8, 2016 · N478AS · Boeing 737990ER · Fuel Controlling SystemSDR ASAA2016080117586Stator · defectiveWHILE PERFORMING ENGINE FAULT CODES, INTERROGATION TASKCARD FOUND FAULT CODE ON NR 2 ENGINE. 73-21272, ALTERNATOR VOLTAGE IS OUT OF RANGE TO THE EEC. THIS IS A SHORT TERM CODE 73-21272. ACFT GROUNDED. ACCOMPLISHED FIM 73-27, TASK 804. RESISTANCE IS HIGH FAug 1, 2016 · N478AS · Boeing 737990ER · Fuel Control/Turbine EnginesSDR ASAA2016071217352Stator · failedDURING ACCOMPLISHEMENT OF T/C 78273000, NR 2 ENGINE HAS FAULT MESSAGE 73-21272. THE ALTERNATOR VOLTAGE INPUT TO ECC IS OUT OF RANGE. ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE EEC ALTERNATOR STATOR IAW AMM 73-21-08. PERFORMED NR 2 ENGINE IDLE POWEJul 12, 2016 · N478AS · Boeing 737990ER · AC Generator-AlternatorSDR ASAA2016051616754Circuit Breaker · trippedAT HOLD SHORT AUTOTHROTTLE WOULD NOT ENGAGE FOR TAKEOFF. FOUND AUTOTHROTTLE C/B OUT. ACFT GROUNDED. INSP AND RESET AUTOTHROTTLE C/B REF AMM 20-60-01. PERFORMED AUTOTHROTTLE OPS CHECK IAW AMM 22-31-00. CHECKS GOOD.May 16, 2016 · N478AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2016030915812Fan · lack of lubeNR 2 ENGINE TREND DATA SHOWS A SUDDEN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS. DATA SCATTER INDICATES FAN LUBE REQUIRED. ACFT GROUNDED. PERFORMED FAN LUBRICATION TC NR 78472002 AND REPLACED ALL FAN BLADE SPACERS ON NR 2 ENGINE IAW T/C 78472002. SPAMar 9, 2016 · N478AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2016022915703Warning Flag · false activationDURING CRUISE VTK APPEARED CAPTAIN SIDE INBD DU, FOLLOWED QRH PROC. INDICATION WENT AWAY & RETURNED, OPS NORMAL. ACFT GROUNDED. LT FMC LOGGED A RESET ON LAST FLIGHT. PERFORMED FIM 34-60, TASK 801 & BITE CHECK & GROUND FUNCTIONAL CHECK PASSED.Feb 29, 2016 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016021415440Control Valve · failedLEFT PACK LIGHT ILLUMINATES WITH MASTER CAUTION RECALL. EXTINGUISHES WITH PRESS OF MASTER CAUTION LIGHT. ACFT GROUNDED. R & R LT PACK TEMPERATURE CONTROL VALVE (TCV), REF AMM 21-51-10, OPS AND LEAK CHECK GOOD. BITE TEST ON LT CONTROLLER, NO DEFECTS NOTED, AFeb 14, 2016 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2016021415409Warning Light · false activationLEFT PACK LIGHT ON RECALL ILLUMINATES. EXTINGUISH WITH THE MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED CABIN TEMPERATURE CONTROLLER BITE PROCEDURE IAW FIM 21-61-TASK 801. FOUND FAULT FOR TCV. RESET FAULT FOR TCV, OPS CHECK NORMAL.Feb 14, 2016 · N478AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2015121014198Module · failedCABIN PRESSURIZATION PANEL LIGHTING DOES NOT DIM WITH PANEL BRIGHTNESS CONTROL. ACFT GROUNDED. VERIFIED DEFECT, ALSO FOUND OUTFLOW VALVE INDICATOR INOPERATIVE. R & R CPC MODULE REF AMM 21-31-02, OPS CHECK NORMAL.Dec 10, 2015 · N478AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2015120214083Warning Flag · false activationMAP FAILURE FLAG DISPLAYED ON CAPTAINS ND. MAGNETIC COURSE DISAPPEARED. SELECTED FMC, BOTH ON R, DISPLAY RETURNED TO NORMAL. ACFT GROUNDED. PERFORMED ADIRS BITE PROCEDURE NO CURRENT STATUS FAULTS AND NO INFLIGHT FAULTS NOTED REF FIM TASK 34-21, TASK 801. Dec 2, 2015 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015111313769Warning Message · false activationFMC DISAGREE ON GROUND. ACFT GROUNDED. ACCOMPLISHED FMC DISAGREE QRH CHECKLIST 11.2. DISAGREEMENT CLEARED. NORMAL OPS RESTORED.Nov 13, 2015 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015102213513Connector · unsecureBETWEEN 6-20 CONDITIONED AIR GETS VERY HOT AND ODOR OF HEATER ELEMENTS BURNING. CUSTOMERS COMPLAINED THROUGHOUT THE FLIGHT. ACFT GROUNDED. SEATED CONNECTORS OF OVERHEAD PACK CONTROL OPS CHECK NORMAL C/W BITE AMM 21-51-00.Oct 22, 2015 · N478AS · Boeing 737990ER · Air Conditioning System WiringSDR ASAA2015092313175Filter · dirtyFWD CABIN & AFT CABIN TEMPERATURE SELECTORS EXTREMELY SENSITIVE SLIGHT MOVEMENT, LIKE 1 DEGREE, RESULTS IN 10-15 DEGREE TEMP INLET CHANGE. ALL OTHER AIRPLANES THAT WOULD REQUIRE .1250-.2500 KNOB MOVEMENT. ACFT GROUNDED. INSPECTED FWD, AFT CABIN TEMP SENSORSSep 23, 2015 · N478AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2015090612926Satcom · lockedSATCOM LOCKED UP. ACFT GROUNDED IAW QRH SYSTEM RESTORED.Sep 6, 2015 · N478AS · Boeing 737990ER · Communications SystemSDR ASAA2015082012971Engine · faultedWHILE PERFORMED T/C 78273000, FOUND NR 1 ENGINE FAULT 79-31121, OIL FILTER SIGNALS DISAGREE, LONG TIME FAULT. ACFT GROUNDED. ON DEFERRAL.Aug 20, 2015 · N478AS · Boeing 737990ER · Engine (Turbine/Turboprop)SDR ASAA2015082012963Lamp · inoperativeR2 DOOR EXTERIOR EMERGENCY SPOTLIGHT INOPERATIVE. ACFT GROUNDED. RE-LAMPED R2 DOOR EXTERIOR EMERGENCY SPOTLIGHT. OPS NORMAL.Aug 20, 2015 · N478AS · Boeing 737990ER · Emergency LightingSDR ASAA2015081812932Transmitter · failedNR 1 OIL FILTER BYPASS ON TAXI IN. ACFT GROUNDED. NR 1 ENGINE R & R SCAVENGE OIL FILTER CLOGGING TRANSMITTER IAW AMM 79-21-07-400-801. PERFORMED ELECTRICAL ENGINE CONTROL TEST, TASK 73-21-00-700-804, TEST PASSED. R & R NR 1 ENG OIL FILTER IAW AMM 79-21-06-4Aug 18, 2015 · N478AS · Boeing 737990ER · Engine Oil Distribution (Airframe Furnished)SDR ASAA2015081412881Fmc · malfunctionedUNABLE TO OBTAIN ENROUTE AND DESCENT WINDS ON FMC. ACFT GROUNDED. ACCOMPLISHED VHF LINK STATUS TEST, LINK TEST SUCCESSFUL VERIFIED CORE SOFTWARE AND AOC SOFTWARE. IAW MM 23-27-00-730-806Aug 14, 2015 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015080712792Transmitter · failedDURING TAXI-IN, NR 1 ENG OIL FILTER BYPASS LIGHT CAME ON & REMAINED ILLUMINATED UNTIL ENGINE SHUTDOWN. ALL ENGINE INDICATIONS WERE NORMAL, ALL QTY INDICATIONS NORMAL. ACFT GROUNDED. IN EVALUATION, FOUND THE OIL FILTER SIGNALS DISAGREE LIGHT ON, CDU INPUT MONIAug 7, 2015 · N478AS · Boeing 737990ER · Engine Oil Distribution (Airframe Furnished)SDR ASAA2015080312707Warning Message · false activationDATA LINK FULL. ACFT GROUNDED. ACCOMPLISHED ON THE GROUND PORTION OF FMC DISAGREE. OPS NORMAL.Aug 3, 2015 · N478AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015072912633Control Unit · failedF/O SLIDING WINDOW HEAT INOPERATIVE. ACFT GROUNDED. RT SIDE WHCU BITE SHOWS WHCU FAULTS 7 OF 10 LEGS. REPLACED IAW MM 30-41-011, OPS NORMAL.Jul 29, 2015 · N478AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
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