N491AS

Service difficulty reports · 192

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 = 'N491AS' 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 ASAA201805144599Fault Code · false indicationWHILE ACCOMPLISHING TASK CARD 78273000, FOUND THE NR 2 ENGINE HAD A RECENT FAULT CODE 76-31362, THE START LEVER SIGNALS DISAGREE. LONG TIME FAULT ACFT GROUNDED. ACCOMPLISHED FIM 76-11 TASK 801. FAULT IS NO LONGER PRESENT AND DID NOT RETURN ON FLIGHT LEG 0.May 10, 2018 · N491AS · Boeing 737990ER · Engine Indicating SystemSDR ASAA2018031823963Fmc · malfunctionedVTK ANNUNCIATOR, LEFT SIDE FOLLOWED BY DUAL FMC FAILURE. AIRBORNE AT 6000 FT. ANP WENT UP TO 2.85. AFTER 45 SECONDS SCREENS REAPPEARED, VTK WENT AWAY AND FMC PROMPT RETURNED. TWO SCRATCH PAD MESSAGES, CHECK POSITION FMC-GPS, CHECK POSITION -FMC -FMC. AMar 18, 2018 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018022123666Fmc · malfunctionedDURING CRUISE, THE LEFT FMC FAILED WHEN REQUESTING WINDS ON ROUTING DATA PAGE, LEFT FMC RESOLVES AFTER RIGHT FMC, PER QRH. WINDS ONLY LOAD WITH RIGHT FMC SELECTED. ACFT GROUNDED. FOUND PGM FAULT ON THE LEFT FMC. PERFORMED TWO CIRCUIT BREAKER RESET. OPFeb 21, 2018 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018021123507Filter · not reportedAFT TEMP CONTROLLER WILL NOT HOLD A CONSTANT TEMP. ACFT GROUNDED. PERFORMED A CABIN TEMP CONTROL BITE NR 1 & 2 IAW FIM 21-61, TASK 801. NO FAULTS DURING BITE. REMOVED AND REPLACED THE AFT CABIN TEMP SENSOR FILTER IAW AMM 21-61-06. CABIN TEMPERATURE OPERATFeb 11, 2018 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2017122923032Actuator · failedON RECALL, THE RT PACK LIGHT ILLUMINATED AND CANCELED WITH THE MASTER CAUTION RESET. ACFT GROUNDED. REMOVED AND REPLACED RAM AIR EXHAUST ACTUATOR IAW AMM 21-51-27. TESTED THE ACTUATOR AND THE SYSTEM OPS AND INDICATIONS. THE AFT EXHAUST DUCT LOUVERS INTERMIDec 29, 2017 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017122823019Actuator · failedRIGHT PACK LIGHT ILLUMINATED ON RECALL. LIGHT GOES OUT WITH MASTER CAUTION RESET. ACFT GROUNDED. ACCOMPLISHED FIM 21-53 TASK 810, PACK ZONE TEMP CONTROLLER BITE AMM 21-61-00-700-806-002 SHOWS THE RIGHT PACK EXHAUST FAULT. REMOVED AND REPLACED THE RAM AIRDec 28, 2017 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017122623007Warning Light · false activationRIGHT PACK LIGHT ON RECALL ACFT GROUNDED. PERFORMED A PACK-ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-61-00, NO FAULTS NOTED. RAN THE RT PACK FOR SEVERAL MINUTES, NO FAULTS. NO HISTORY IN 60 DAYS.Dec 26, 2017 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017121122866Ecs · malfunctionedPASSENGER CABIN WAS EXCESSIVELY WARM IN FLIGHT WITH FWD CAB AND AFT CAB IN RELATIVELY NORMAL POSITIONS. TURNED FWD CAB AND AFT CAB CONTROLLERS WAY DOWN BUT PAX CABIN REMAINED WARM. REFERENCED QRH PROCEDURE AND TURNED TRIM AIR SWITCH OFF PAX CABIN TEMPERATURE GDec 11, 2017 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR 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 737990ER · APU ControlsSDR ASAA2017120222751Warning Light · illuminatedAPU DID NOT START ON FIRST ATTEMPT, OVERSPEED LIGHT ILLUMINATED. GROUNDED - YES. VERIFIED NO OTHER FAULTS FOUND PER B737-900 FIM 49-30 TASK 802. SECOND START OPS NORMAL.Dec 2, 2017 · N491AS · Boeing 737990ER · APU Start/Ignition SystemSDR ASAA2017112722698Warning Light · false activationLEFT PACK ILLUMINATED ON RECALL. ACFT GROUNDED. ACCOMPLISHED PACK/ZONE TEMP CONTROL BITE TEST IAW AMM TASK 21-61-00-700-806-002. BITE & PREV FLT SHOWED TCV FAULT. RESET, RAN TEST. CLEARED FAULT. RAN PACK FOR 10 MINUTES. NO FAULTS.Nov 27, 2017 · N491AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2017111922630Fmc · malfunctionedROUTE DISCO W/O PILOT INPUT THAT WAS CORRECTED 10 MIN LATER, LOST LNAV AND VNAV PLANE WENT INTO CONTROL WHEEL STEERING ROLL AND SPEED, NO LATERAL FLIGHT DIRECTOR WE PUT THE PLANE IN HEADING SELECT BECAUSE LNAV WOULD NOT REENGAGE THEN RESELECTED LNAV AND VNAV ANov 19, 2017 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2017101822253Anti-Ice Valve · failedNR 1 ENGINE AMBER TAQ LIGHT ILLUMINATED. ACFT GROUNDED. RAN THE NR 1 ENGINE AND FOUND THE COWL TAI ON, AMBER TAI SHOWS ON THE NR 1 ENG DISPLAY. BLUE LIGHT FOR TAI ON NORMAL. SUSPECT ENGINE COWL TAI. REMOVED & REPLACED THE NR 1 ENGINE COWL TAI IAW AMM 30-2Oct 18, 2017 · N491AS · Boeing 737990ER · Air Intake Anti/De-Ice SystemSDR ASAA2017101722254Warning Light · false activationNR 1 ENGINE ANTI-ICE TAI LIGHT DOES NOT AGREE WITH BLUE LIGHT VALVE POSITION. ACFT GROUNDED. ACCOMPLISHED AN OPS CHECK OF THE NR 1 ENGINE TAI IAW AMM 30-21-00. OPS CHECKED NORMAL.Oct 17, 2017 · N491AS · Boeing 737990ER · Air Intake Anti/De-Ice SystemSDR ASAA2017061421072Filter · cloggedFOUND RED BUTTON EXTENDED ON THE FILTER INDICATOR LUBE HOUSING ON APU DURING A GENERAL VISUAL IAW TASK CARD N8349002. ACFT GROUNDED. COMPLIED WITH T/C N8349002 STEP 3. OIL FILTER INDICATOR SERVICING IAW AMM 49-91-13, MAGNETIC DRAIN PLUG INSPECTED TASK AMM 4Jun 14, 2017 · N491AS · Boeing 737990ER · APU Oil SystemSDR ASAA2017053120930Autoland Sys · malfunctionedUNSUCCESSFUL AUTOLAND. ACFT GROUNDED. IAW FIM 22-11, TASK 801 DFCS BITE, NO CURRENT FAULTS. FLIGHT LEG 01 SHOWS FAULTS 22-11210 (FCC-B), 22-11209 (FCC-A). ACCOMPLISHED FIM 22-11 TASK 801 DFCS BITE GROUP NR 20. TESTS PASS, COULD NOT DUPLICATE. ACCOMPLISHED TMay 31, 2017 · N491AS · Boeing 737990ER · Autopilot SystemSDR ASAA2017051820810Blower · failedWEATHER RADAR R/T MOUNT COOLING FAN IS INOPERATIVE. ACFT GROUNDED. REMOVED THE WEATHER RADAR R/T BLOWER IAW AMM 34-43-51-000-801. INSTALLED A NEW BLOWER IAW AMM 34-43-51-400-801. PERFORMED WEATHER RADAR SYSTEM OPS CHECK IAW AMM 34-43-00-710-802-001. OPS CHEMay 18, 2017 · N491AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2017031420178Lens · brokenEMERGENCY LIGHT EXIT LOCATOR SIGN AT L-2 DOOR HAS BROKEN LENS. GROUNDED - YES. REMOVED AND REPLACED LENS AND TESTED LIGHT ASSEMBLY PER AMM 33-51-01-960-801. OPS NORMAL.Mar 14, 2017 · N491AS · Boeing 737990ER · Emergency LightingSDR ASAA2017021819865Shim · wornWHILE ACCOMPLISHING FAN BLADE LUBRICATION CARD 78472002 FOUND BLADE SHIMS WORN ON ENGINE 1. GROUNDED - YES. REMOVED AND REPLACED FAN BLADE SHIMS IAW TASK CARD 78472002 ON ENGINE 1.Feb 18, 2017 · N491AS · Boeing 737990ER · Turbine Engine Compressor SectionSDR ASAA2017011319380Unknown · malfunctionedLEFT FMC FAIL WITH "VTK" FLAG ON CAPTAINS SIDE - PLACED FMC BOTH ON RIGHT - AFTER 1 MINUTE RETURNED FMC'S TO NORMAL AND RECEIVED "VTK" FLAG AGAIN WITH LEFT FMC FAILURE - RETURNED TO FMC BOTH ON RIGHT TO FINISH FLIGHT. GROUNDED - YES. ACCOMPLISHED FMC BITE, PMGJan 13, 2017 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016120518942Circuit Breaker · openCREW REPORTS "MULTIPLE ELECTRICAL" FAULTS. ACFT GROUNDED. FOUND C/B BAT BUSS SECT 2 OPEN ON M1720 PANEL. RESET THE C/B IAW AMM 20-60-01, OPS NORMAL. NO FAULTS NOTED IAW WDM 24-61-11-1.Dec 5, 2016 · N491AS · Boeing 737990ER · DC Generating SystemSDR ASAA2016111818735Modulating Valve · failedCONT CAB ZONE TEMP LIGHT ILLUMINATED ON RECALL, EXTINGUISHED W/ MASTER CAUTION RESET. GROUNDED - YES. PERFORMED BITE CHECK OF LEFT AND RIGHT PACK ZONE CONTROLLERS AND RECEIVED FLIGHT DECK TRIM VALVE FAULT, REF TASK 21-61-700-806-002. REMOVED AND REPLACED CONTRNov 18, 2016 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016101518342Cover · missingFA REPORTED THE R2 GALLEY DOOR EXIT SIGN COVER IS MISSING. ACFT GROUNDED. INSTALLED A NEW EXIT SIGN COVER.Oct 15, 2016 · N491AS · Boeing 737990ER · Emergency LightingSDR ASAA2016100118159Lens · detachedEXIT SIGN COVER FELL OFF R2 DOOR BY TRASH CAN. GROUNDED - YES. INSTALLED EXIT SIGN COVER AT R2 DOOR AFT AREA BY TRASH CAN REF B737-900 MM 20-50-11.Oct 1, 2016 · N491AS · Boeing 737990ER · Emergency LightingSDR ASAA2016082617819Idg · leakingNR 2 ENGINE IDG OIL LEVEL IS BELOW THE SIGHT GLASS. BAGGED THE NR 2 ENGINE IDG DRAIN AND AFTER 10 MINUTE RUN FOUND OIL IN THE BAG, ACFT GROUNDED. REMOVED AND REPLACED THE NR 2 ENGINE IDG IAW AMM 24-11-11-400-801. LEAK AND OPS CHECK GOOD. NO CONTAMINATION FOAug 26, 2016 · N491AS · Boeing 737990ER · AC Generator-AlternatorSDR ASAA2016081617728Fmc · malfunctionedLEFT FMC FAILED IN FLIGHT. VTK FLAG DISPLYED BUT NO MAP FAIL FLAG DISPLAYED. MAP DISPLAY FAILED AND BOTH MCDU'S FAILED/BLANKED. ACCOMPLISHED FMC FAIL CHECKLIST. CONTINUED WITH FMC" SWITCH IN BOTH ON R POSITION. CONTINUED WITH NORMAL OPS. ACFT GROUNDED. FAug 16, 2016 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2016063017230Hose · failedWITH CLB PWR SET PACK SPLIT MORE THAN 20 PSI. RT PACK 64 PSI LT PACK 42 PSI. CRZ PWR SET LT PACK 41 PSI RT PACK 47 PSI. 1:30 INTO FLT BOTH PACKS 45PSI. ACFT GROUNDED. ACCOMPLISHED NR 1 ENGINE BLEED AIR SYSTEM HEALTH CHECK IAW AMM 36-11-00-700-801 AND TASK Jun 30, 2016 · N491AS · Boeing 737990ER · Pneumatic Distribution SystemSDR ASAA2016052516848Computer · failedAUTOTHROTTLES DISENGAGES AFTER PUSHING TOGA. ACFT GROUNDED. PERFORMED A/T BITE, NO CURRENT FAULTS LOGGED. REVIEWED FAULT HISTORY AND FOUND FAULT MESSAGE 22-31794 LOGGED 7 TIMES. ACCOMPLISHED FIM 22-31, TASK 805. REMOVED AND INSTALLED NEW ASM NR 1. REF AMM May 25, 2016 · N491AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2016051516738Idg · failedENGINE NR 2 DRIVE LIGHT ON ACCOMPLISHED QRH PROCEDURE. ACFT GROUNDED. REPLACED THE NR 2 IDG IAW AMM 24-11-11. INSPECTION IAW AMM 24-11-11-080-801 FOUND CONTAMINATION IN THE IDG FILTERS. REQUIRES REPLACEMENT OF THE IDG AIR/OIL COOLER AND REPLACEMENT OF THE May 15, 2016 · N491AS · Boeing 737990ER · AC Generator-AlternatorSDR ASAA2016050916662Shim · worn2 ENGINE TREND DATA SHOWS A SUDDEN INCREASE IN LOW PRESSURE ROTOR VIBRATION LEVELS. DATA SCATTER INDICATES FAN LUBE AND HARDWARE INSPECTION REQUIRED. ACFT GROUNDED. ACCOMPLISHED FAN LUBE AND REPLACED ALL SHIMS AND SPACERS REF T/C 78472002 NR 2 ENGINE. ACCOMPLMay 9, 2016 · N491AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2016041916468Hf Comm · malfunctionedHF 2 INDICATES FAIL. ACFT GROUNDED. VERIFIED DISCREPANCY, PERFORMED FIM TASK 23-11, TASK 802. SYS RETURNED TO NORMAL.Apr 19, 2016 · N491AS · Boeing 737990ER · HF Communications SystemSDR ASAA2016031315893Engine · malfunctionedNR 1 ENGINE N2 22 PERCENT MAX ON START UP. ACFT GROUNDED. MOTORED NR 1 ENGINE TO MAX MOTOR OF 30 PERCENT N2. NO DEFECTS NOTED, OPS NORMAL REF AMM 71-00-00, FIM TASK 80-07 ITEM F.Mar 13, 2016 · N491AS · Boeing 737990ER · Engine CrankingSDR ASAA2016031215862Sensor · dirtyAIR CONDITIONING VERY HOT IN ROWS 6-12, FWD CABIN TEMP CONTROL HAD LITTLE EFFECT. FIRST CLASS AND BACK OF AIRCRAFT COLD. GROUNDED - YES. PERFORMED PACK ZONE TEMP CONTROLLER BITE NR 1 AND NR 2, NO FAULTS FOUND, REF FIM 21-62, TASK 801. PERFORMED CABIN TEMP CONTMar 12, 2016 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016021215416Warning Light · false activationDURING PRESS OF RECALL, AIR CONDITION CONTROLLER CABIN ZONE TEMP ILLUMINATED. LIGHT RESETS WITH MASTER CAUTION PUSH TO RESET. ACFT GROUNDED. NR 2 CABIN TEMP CONTROLLER LOGGED FLT DECK TRIM VALVE FAULT. RESET FLT DECK TRIM VALVE FAULT. NR 2 CABIN TEMP CONTFeb 12, 2016 · N491AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2016020315277Control Module · failedBACKLIGHTING INOP IN OUTFLOW VALVE POSITION INDICATOR. ACFT GROUNDED. DUPLICATED DISCREPANCY LIGHT ON/OFF INTERMITTENT ON IND. REMOVED AND INSTALLED NEW P5-6 PANEL CABIN PRESSURE CONTROL MODULE IAW AMM 21-31-02. PERFORMED PRESSURE SYS TEST GROUND REF AMM 21Feb 3, 2016 · N491AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2016012214972Tube · leakingNR 1 IDG OIL COOLER FUEL OUT TUBE LEAKING FUEL. ACFT GROUNDED. R & R NR 1 IDG OIL COOLER FUEL OUT TUBE IAW AMM 73-11-06, GROUND VERIFICATION, OPS CHECK GOOD IAW AMM 71-00-00-800-811-FOO. NO LEAKS NOTED.Jan 22, 2016 · N491AS · Boeing 737990ER · Engine Fuel DistributionSDR ASAA2016012114959Satcom · no indicationNO SATCOM PROMPT. ACFT GROUNDED. SATCOM LOCKOUT CHECKLIST DONE WITH SUCCESS.Jan 21, 2016 · N491AS · Boeing 737990ER · Communications SystemSDR ASAA2015121814311Display · malfunctionedPRESSURIZATION PANEL DIGITAL DISPLAY WILL NOT DIM, LIGHTS BRIGHT, AND BACK LIGHT LETTERS INOPERATIVE. ACFT GROUNDED. R & R P5-6 PRESSURIZATION CONTROL MODULE IAW AMM 21-31-02. ALL TESTS PASSED.Dec 18, 2015 · N491AS · Boeing 737990ER · Cabin Pressure Control SystemSDR ASAA2015121114209Module · failedAPU DETECTOR INOPERATIVE LIGHT, ALONG WITH OVERHEAT/DETECTOR MASTER CAUTION LIGHT FLASHES CONTINUOUSLY AFTER REACHING TOP OF CLIMB. ACFT GROUNDED. DVI ON C403 C/B, NO DEFECTS NOTED. DUE TO C/B FOUND OUT. R & R M279 ENGINE/APU OVERHEAT DETECTION MODULE REF Dec 11, 2015 · N491AS · Boeing 737990ER · Fire DetectionSDR ASAA2015120814156Fmc · malfunctionedRIGHT FMC FAILED VTK ON F/O'S DISPLAY. IT NEVER RESUMED WORKING. ACFT GROUNDED. UNABLE TO CONFIRM, RT FMC WAS OPS WHEN TESTED. ACCOMPLISHED FMC BITE REF FIM 34-61, TASK 801, CHECKED NORMAL.Dec 8, 2015 · N491AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2015120714143Fire Loop · false activationMASTER CAUTION, OVERHEAT, DETECTION LIGHT FLASHING INTERMITTENTLY WITH APU DET INOPERATIVE LIGHT. ACFT GROUNDED. APU FIRE DETECTION TEST NORMAL NUMEROUS TIMES, NO FAULT ON ENGINE & APU FIRE BOX. ACCOMPLISHED APU LOOP RESISTANCE CHECKS REF AMM 26-15-00 WITHIDec 7, 2015 · N491AS · Boeing 737990ER · Fire DetectionSDR ASAA2015120614131Autopilot Sys · malfunctionedABOUT 1200 AGL WITH BOTH AUTOPILOT A AND B ENGAGED, THE AUTOPILOT DISCONNECTED. ALL PARAMETERS WERE NORMAL. NO APPROACH WARNING BOTH ILS FREQUENCIES WERE TUNED CORRECTED AND HAD GOOD IDENTS. THE HGS WORK NORMAL. ACFT GROUNDED. ACCOMPLISHED DFCS BITE REF FIMDec 6, 2015 · N491AS · Boeing 737990ER · Autopilot System
Back to N491AS