N471AS

Service difficulty reports · 245

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 = 'N471AS' 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 ASAA2020111733568Fmc · failedCAPT FMC FAILURE. WILL NOT RESTORE. GROUNDED-YES. BITE CHECK OF LEFT FMC HAD ONE PGM FAULT RECORDED. ACCOMPLISHED B737-900 FIM 34-61/807 TWO C/BS OPENED AND 2 C/BS RESET. FMC RESTORED.Nov 17, 2020 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020110433493Fmc · malfunctionedLEFT FMC FAIL, INTERMITTENT FAILURES, BUT WOULD FIX ITSELF AFTER 4TH FAILURE. PERFORMED QRH PROCEDURE. FMC SWITCH ON "BOTH ON RT" NO ISSUES WITH RT FMC. GROUNDED-YES. LT FMC HAD A PROGRAM FAULT. RESET LT FMC COMPUTER, REF B737-900 FIM 34-61 TASK 807. OPNov 4, 2020 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020100633291Fmc · failedCAPTAINS' FMC FAILED ABOUT 2:20 INTO FLIGHT. RAN QRH AND RE-ESTABLISHED DUAL FMC OPERATION. FAILED AGAIN ABOUT 25 MINUTES LATER. CONTINUED WITH SINGLE FMC OPERATION. GROUNDED-YES. R & R FMC1, REF B737-900 AMM 34-61-02. OPERATIONS CHECK GOOD. SOFTWARES MOct 6, 2020 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020090133120Light · malfunctionedFLIGHT ATTENDANT REPORTS G1 & G4 SMALL OVER EMERGENCY CEILING LIGHT IS ON DURING GROUND TIME. GROUNDED - YES. EMERGENCY LIGHTS OPS CHECKS NORMAL, REF B737-900 AMM 33-51-00.Aug 30, 2020 · N471AS · Boeing 737990ER · Emergency LightingSDR ASAA2020083183108Circuit Breaker · trippedMACH TRIM FAIL LIGHT ILLUMINATED WHILE IN LEVEL FLIGHT AT 37,000 FT. PRESSED MASTER RECALL SWITCH AND LIGHT EXTINGUISHED. GROUNDED - YES. CONFIRMED FAULT, DFCS BITE TEST SHOWS FAULT MSG NR 22-11334 "MACH TRIM 115VAC PROBLEM" FAULT ISOLATION REF B737-900 FIMAug 28, 2020 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2020080432982Fmc · faultedIN CRUISE LNAV AND VNAV DISENGAGED FOLLOWED BY VTK FLAG ON LEFT MAP AND BOTH FMCS LOST FMC PROMPT AFTER ABOUT 10 SECONDS FMC RESTORED AND LNAV/VNAV REENGAGED. GROUNDED - YES. ACCOMPLISHED FIM 34-61, TASK 837. FMC LT SHOWS FAULT FOR PRES POS LAT RATE, FAULT FOAug 3, 2020 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2020061232794Control Valve · faultyAFTER ENGINE START CONTROL CABIN ZONE TEMP LIGHT ILLUMINATED. LIGHT EXTINGUISHED WITH MASTER CAUTION LTS PUSHED. GROUNDED - YES. CONFIRMED FAULT, "CONT CAB" ZONE LIGHT ON RECALL. NR 2 PACK/ZONE TEMP CONTROLLER BITE SHOWS HARD FAIL "FLIGHT DECK TCV" (V143). REMJun 10, 2020 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2020024832235Coupler · defectiveHF #1 RADIO DOES NOT TRANSMIT, IT DOES RECEIVE. GROUNDED - YES. REMOVED AND REPLACED #1 HF ANTENNA COUPLER REF B737-900 AMM 23-11-61-400-801. #1 HF SYSTEM OPERATIONAL TEST AND SYSTEMS TEST OP GOOD, REF AMM 23-11-00-730-801 AND 23-11-00-710-801. THIS CLEARS MELFeb 18, 2020 · N471AS · Boeing 737990ER · HF Communications SystemSDR ASAA2020011731878Control Panel · failedFO SIDE COURSE WINDOW AND CDI WON'T STOP SPINNING. BEGAN SPINNING 3 HOURS INTO THE FLIGHT WITH OUT INTERVENTION FROM CREW. GROUNDED - YES. VERIFIED - HARD FAIL. CYCLED MCP C/B'S AND A/C POWER W/NO HELP. REF AMM 22-11-34, REMOVED/REPLACED MCP. OPS NML REF SAME.Jan 15, 2020 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2020010631779Unknown · malfunctionedOVERHEAT DETECTION TEST FAILED ON PRE FLIGHT. NO "OVERHEAT" LIGHT ON ANNUNCIATOR. GROUNDED - YES. PERFORMED FIRE & OVERHEAT OPERATIONAL TEST REF B737-900 AMM 26-10-00-710-801 TEST NORMAL.Jan 2, 2020 · N471AS · Boeing 737990ER · Overheat DetectionSDR ASAA2019122433693Lens · detachedLIGHT COVER OFF NEAR ACFT LEFT REAR GALLEY. GROUNDED - YES. INSTALLED THE EMERGENCY LIGHT LENS IAW AMM 33-51-01, OPS CHECK GOOD.Dec 23, 2019 · N471AS · Boeing 737990ER · Emergency LightingSDR ASAA2019111841353Warning Light · false activationCONT CABIN ZONE TEMP LT ON RECALL/EXTINGUISHES WITH RESET. GROUNDED - YES. CONTROL CABIN ZONE TEMP PRIMARY INOP. PERFORMED PACK TEMP CONTROL BITE. BITE PASSED. REF B737-900 FIM 21-62 TASK 801. CONT CABIN ZONE TEMP LT REMAINS EXTINGUISHED ON RECALL.Nov 14, 2019 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA201911151337Fmc · malfunctionedMOMENTARY LOSS OF BOTH FMC FAIL ON BOTH CAPTAIN AND FIRST OFFICER SIDE. SYSTEM RESTORED ITSELF BEFORE QRH PORCEDURE WAS STARTED. GROUNDED - YES. DEU 1 & 2 LOGGED NO FMC 1 DATA, ONE FLIGHT COMPLETED FIM TASK 31-63 TASK 809 NO INPUT FROM LRU ON 429 BUSS DEU 1&2 Nov 13, 2019 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019102183044Power Supply · intermittentFA REPORTS THE EMERGENCY EXIT LIGHT OVER R2 DOOR INTERMITTENTLY IS ON AND OFF. VERIFIED EMERGENCY EXIT LIGHT SWITCH IS ARMED (NOT ON). NO ADDITIONAL DOOR OR ELECTRICAL ABNORMALITIES. GROUNDED - YES. REPLACED POWER SUPPLY M1672, REF B737-900 AMM 33-51-06. OPS NOct 18, 2019 · N471AS · Boeing 737990ER · Emergency LightingSDR ASAA2019091330700Unknown · malfunctionedLEFT FMC FAILED. RAN QRC OPERATED REMAINDER OF FLIGHT ON RIGHT FMC. GROUNDED - YES. PERFORMED FIM 34-61 TASK 801, LT FMC SHOWS MMR L&R GPS. PERFORMED FIM 34-61 TASK 834, PERFORMED MMR BITE TEST REF FIM 34-31 TASK 801. NO FAULT NOTED AT THIS TIME.Sep 13, 2019 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019080530320Circuit Breaker · trippedDURING NR 1 ENGINE START, USING RIGHT IGNITOR SELECTION, NO ENGINE LIGHT LIGHT OFF. USING LEFT IGNITOR SELECTION NR 1 ENGINE DID START NORMAL. ACFT GROUNDED - YES. INITIAL EVALUATION ON CDU SHOWS RT EXCITER IGNITION 2 OUT OF RANGE, NR 1 ENGINE, FOUND ENGAug 5, 2019 · N471AS · Boeing 737990ER · Ignition Power SupplySDR ASAA2019072830229Warning System · false activationLEFT SIDE WINDOW OVERHEAT ON ACCOMPLISHED QRH, TURNED BACK ON (NO OVERHEAT). GROUNDED - YES. ACCOMPLISHED WINDOW HEAT TEST OVHT/PWR TEST, TEST PASS REF AMM 30-41-00-210-001.Jul 28, 2019 · N471AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2019071930131Probe · dirtyPER TASK CARD N8005003 - #1 ENGINE TOP RIGHT EGT SIGNAL IS OUT OF RANGE - FAULT CODE 77-101841. GROUNDED - YES. REF CORRECTIVE ACTION ON TSR703709 AFTER CLEANING EGT PROBES & EGT SYSTEM RESISTANCE CHECKS, POST ENGINE RUN SHOWS MSG MOVED OFF FLT LEG 0. REPAIR &Jul 19, 2019 · N471AS · Boeing 737990ER · Engine EGT/TIT Indicating SystemSDR ASAA2019050429242Unknown · malfunctionedAPPROX 40 MIN INTO FLIGHT, L FMC FAILED, BUT CAME BACK ONLINE BEFORE QRH WAS RUN. APPROX 30 MIN LATER, BOTH FMCS FAILED COMPLETELY. RAN QRH AND PROCEEDED W/O FMC'S. THEY APPEARED TO COME BACK ONLINE BUT WE DID NOT USE FMC'S. GROUNDED - YES. NR 1 AND 2 FMC COMPMay 4, 2019 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019042539129Warning Message · false activationCONT CAB ZONE TEMP ILLUMINATED DURING RECALL AFTER ENGINE START. GROUNDED - YES. PRIMARY CONT TEMP CONTROL IS INOP. ENROUTE MEL - #2 ZONE CONT LOGGED FLT DECK TCV FAULT, FAULT CLEARED & SYS OPS CKS NML REF B737-900 AMM 21-61-00.Apr 23, 2019 · N471AS · Boeing 737990ER · Cabin Temperature Control SystemSDR ASAA2019042289083Fmc · failedAFTER LANDING DURING TAXI IN CAPTAINS FMC FAILED VTK ILLUMINATED ON CAPTAIN'S MAP DISPLAY. GROUNDED - YES. REF B737-900 FIM 34-61 TASK 836 CYCLED C/B FOR #1 FMC CAPTS # 1 FMC OPERATES NORMAL.Apr 18, 2019 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019040878900Duct · leakingLARGE AMOUNT OF WHAT APPEARS TO BE WATER DRIPPING FROM THE AREA OF THE PACKS. DRIPPING IS COMING THROUGH THE PANEL SEAMS, NOT A DRAIN. GROUNDED - YES. PERFORMED B737-900 FIM 21-51 TASK 801 STEP A. THROUGH I (F) (3). CHECKED WATER SPRAY NOZZLE REF AMM 21-51-16-Apr 7, 2019 · N471AS · Boeing 737990ER · Humidity Control SystemSDR ASAA2019040848905Control Panel · malfunctionedVERTICAL SPEED WINDOW ON MCP HAS MARKS ON IT WHEN IT SHOULD BE BLANKED. GROUNDED - YES. REMOVED AND REPLACED DFCS MODE CONTROL PANEL PER B737-900 AMM 22-11-34, PERFORMED INSTALLATION TEST, NO FAULTS NOTED. PERFORMED LAND VERIFY PER AMM 22-11-00 TEST GROUP 49 NApr 4, 2019 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2019040838881Sensor · malfunctionedAPU SHUT DOWN DUE TO OVERSPEED. GROUNDED - YES. PERFORMED APU BITE IAW FIM 49-60 TASK 801. FOUND START 1 MSG 49-31014 FOR OVERSPEED SHUTDOWN IN FAULT HISTORY. FOUND NUMEROUS OCCASIONS OF MSG 49-52221 INLET PRESS SENSOR OUT OF RANGE HIGH, 49-52219 INLET PRESSApr 3, 2019 · N471AS · Boeing 737990ER · APU Indicating SystemSDR ASAA2019032628790Fmc · malfunctionedFMC INOP. GROUNDED - YES. PERFORMED FMC DOES NOT OPERATE FAULT ISOLATION REF FIM 34-61 TASK 836, OPS CHECK NORMAL.Mar 26, 2019 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2019020228058Warning System · false activationFAULT CODE 76-31362 "THE START LEVER SIGNALS DISAGREE." LONG TIME FAULT DEFERRED PER T/C 78273000. GROUNDED - YES. DEFERRED FOR 450 HRS PER T/C 78273000 C/N 02006471. ACCOMPLISHED T/C 78273000 AND REF FIM 76-11 TASK 801, VERIFIED NO FAULT MSG LOGGED FOR THE LAFeb 2, 2019 · N471AS · Boeing 737990ER · Power LeverSDR ASAA2019020228020Apu · oil consumptionAPU HAS A HISTORY OF OIL SERVICING CURRENT OIL CONSUMPTION IS HIGHER THAN EXPECTED. GROUNDED - YES. ACCOMPLISHED AMM 49-11-00-400-803 STEPS 7G(2)-(4). GENERATED DISCREPANCY ON MIG-2C 40-0016543 ITEM 3. INSP NR 7. COMPLETED APU INST REF MM 49-11-00-400-803 STEPFeb 2, 2019 · N471AS · Boeing 737990ER · APU Core EngineSDR ASAA2019012527941Pressure Switch · failedFUEL "FILTER BYPASS" LIGHT ILLUMINATED NR 1 ENGINE ON LANDING ROLLOUT. GROUNDED - YES. COMPLETED FIM 73-05 TASK 801, 73-21071 FAULT CODE SHOWN. REF AMM 73-34-01 FUEL FILTER DIFFERENTIAL PRESSURE SWITCH REMOVED AND REPLACED. PERFORMED FF DPS INSTALLATION TEST NJan 25, 2019 · N471AS · Boeing 737990ER · Fuel Pressure SensorSDR ASAA2019011227764Fmc · malfunctionedAFTER LANDING CAPT'S FMC FAILED EVERY 10 SECONDS AND CAPT'S MAP DISPLAYED "VTK". GROUNDED - YES. PERFORMED SUCCESSFUL FMC RESET IAW FIM 34-61 TASK 836 OK FOR SERVICE.Jan 12, 2019 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018122637554Warning Message · false activationAMBER "IMBAL" WARNING FOR #1 FUEL TANK. GROUNDED - YES. PERFORMED FQIS BITE REF B737-900 FIM 28-41 TASK 801. NO FAULTS FOUND & GROUND TEST PASSED. REF FIM 31-62 TASK 801, PERFORMED CDS BITE TEST. FAULT CLEARED. BITE TEST PASSED.Dec 23, 2018 · N471AS · Boeing 737990ER · Fuel Indicating SystemSDR ASAA2018121327437Computer · failedAUTOPILOT A WILL NOT ENGAGE. AUTOPILOT B DOES ENGAGE. GROUNDED - YES. REMOVED AND REPLACED FCC-AA. OPS TEST GOOD. ALL REQUIRED TESTS PASSED. REF AMM 22-11-33.Dec 13, 2018 · N471AS · Boeing 737990ER · Autopilot ComputerSDR ASAA2018121327436Warning System · false activationSPEED TRIM FAIL LIGHT ILLUMINATED ON RECALL ON DESCENT. GROUNDED - YES. ACCOMPLISHED DFCS BITE TESTS. BITE TESTS PASS NO CURRENT STATUS FAULT FOUND. ACCOMPLISHED DFCS SPEED TRIM TEST. OPS GROUP 14 - OPS TEST PASSED REF AMM 22-11-00.Dec 13, 2018 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2018121327378Computer · failedAUTO THROTTLES DISCONNECTED IN DESCENT W/RED AUTO THRUST LIGHT. TRIED TO REENGAGE, DID NOT WORK. "RETARD" STILL DISPLAYED ON FMA. GROUNDED - YES. REMOVED AND REPLACED FCC-AA. OPS TEST GOOD. ALL REQUIRED TESTS PASSED. REF B737-900 AMM 22-11-33.Dec 13, 2018 · N471AS · Boeing 737990ER · Auto Throttle SystemSDR ASAA2018102926642Spacer · debondedWHILE ACCOMPLISHING T/C 78472002 NR 1 ENGINE FOUND 9 SPACERS DEBONDING. GROUNDED - YES. REMOVED AND REPLACED 24 SPACERS ON NR 1 ENG REF.Oct 28, 2018 · N471AS · Boeing 737990ER · Turbine Engine Air Inlet SectionSDR ASAA2018101626495Spacer · debondedWHILE ACCOMPLISHING MTC 78472002, FOUND NR 2 ENG. FAN BLADES SPACERS NR 11, 13, 14, 16, 17, 18, 24 WITH DISBONDED ELASTOMERS. GROUNDED - YES. REPLACED SPACERS PER T/C 78472002.Oct 16, 2018 · N471AS · Boeing 737990ER · Turbine Engine Compressor SectionSDR ASAA2018092126196Warning System · false activationLEFT PACK LIGHT ILLUMINATED DURING TAKEOFF ROLL GROUNDED - YES. LIGHT/PACK RESET USING QRC PROCEDURESep 20, 2018 · N471AS · Boeing 737990ER · Cabin Cooling SystemSDR ASAA2018091226101Fmc · malfunctionedLEFT FMC FAILED CONTINUING SINGLE FMC OPS PER CK LIST. GROUNDED - YES. PERFORMED FIM 34-61 TASK 836 FMC RESET FAIL LT EXTINGUISHED DUAL FMC OPS RESTORED OK FOR SERVICE.Sep 10, 2018 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018081645804Control Panel · delaminatedCAPTAIN`S COURSE WINDOW DELAMINATED, DIFFICULT TO READ DIGITS. ACFT GROUNDED. CONFIRMED FAULT. REMOVED & REPLACED MCP IAW AMM 22-11-34. ACCOMPLISHED MCP INSTALLATION TEST IAW AMM 22-11-34-740-801, LRU REPLACEMENT TEST FOR MCP (GP 32) IAW AMM 22-11-34, 501, Aug 14, 2018 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2018071725455Fmc · malfunctionedAFTER LANDING IN SEA CAPT PFD DISPLAYED VTK. FMC UNSELECTABLE ON CDU. THIS CONTINUED ALL THE WAY TO THE GATE. GROUNDED - YES. UNABLE TO DUPLICATE DEFECT, ACCOMPLISHED FIM 34-61 TASK 801 LEFT FMC BITE TEST PASSED. NO VTK FLAG, NO FAULTS LOGGED IN HISTORY. NO FAJul 17, 2018 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018061025029Charger · failed"ELEC" LIGHT ILLUMINATED ON O/H PANEL. GROUNDED - YES. SYS LOGGED "AUX BATT CHGR INOP" MESSAGE, FAULT CLEARED BUT AUX BATTERY CHARGER GREEN "CHARGER" LIGHT IS ONLY DIMLY LIT. AUX BATT IS VERY WARM TO THE TOUCH. REMOVED AND INSTALLED BOTH MAIN AND AUX BATTERIESJun 10, 2018 · N471AS · Boeing 737990ER · Battery/Charger SystemSDR ASAA2018060924994Charger · failedELEC LIGHT ILLUMINATED ON THE OVERHEAD PANEL. ACFT GROUNDED. VERIFIED FAULT, FOUND AUX BATTERY CHARGER INOPERATIVE IAW FIM 24-31 TASK 801. REPLACED THE AUX BATTERY CHARGER. ACCOMPLISHED AN AUX BATTERY CHARGER TEST, TEST PASSED IAW AMM 24-31-31-710-801, Jun 9, 2018 · N471AS · Boeing 737990ER · Battery/Charger SystemSDR ASAA2018030123725Drive Unit · failedWEATHER RADAR DOES NOT WORK PROPERLY IN AUTO. OVER FLAT TERRAIN, CLEAR SKY, IN WX+T MODE, SCREEN MOSTLY RED & YELLOW WITH AREAS OF RED DOTS. WITH MANUAL TILT, RADAR MORE REALISTIC. WORKS FINE IN MANUAL MODE. AFTER APPROX 2 HRS, AT CRUISE WITH RADAR ON, CLUTTERMar 1, 2018 · N471AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2018022623708Radar · malfunctionedAUTO TILT FUNCTION ON WEATHER RADAR ISN'T FUNCTIONING PROPERLY. WHEN AUTO IS UTILIZED THE RETURN DISPLAY SHOWS VERY INTENSE RETURNS , WHEN NO WEATHER IS ACTUALLY THERE, IT MAYBE POINTING AT THE GROUND, RADAR SYSTEM FUNCTIONS CORRECTLY WHEN UTILIZING MANUAL TIFeb 26, 2018 · N471AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2018022223683Drive Unit · failedWEATHER RADAR FAIL MESSAGE, TURNED RADAR OFF & BACK ON, THEN HEARD NOISE AND FELT VIBRATION COMING FROM THE NOSE OF THE AIRCRAFT. PWS FAIL MESSAGE ON FINAL WITH ASSOCIATED NOISE AND VIBRATION FROM NOSE OF AIRCRAFT. ACFT GROUNDED. REPLACED THE WEATHER RADAR Feb 22, 2018 · N471AS · Boeing 737990ER · Weather Radar SystemSDR ASAA2018021023478Warning Light · illuminatedRIGHT NR 2 SLIDING WINDOW, OVERHEAT LIGHT ILLUMINATED AT GATE. ACFT GROUNDED. MULTIPLE SENSOR FAULTS ON WHCU BITE. RESISTANCE CHECKED THE SENSORS PRIMARY & SPARE NORMAL. RESISTANCE OF WINDOW HEAT FILM NORMAL, VERIFIED CORRECT TAP FOR WINDOW CODE IAW AMM 30-Feb 10, 2018 · N471AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2018020823479Warning Light · false activationRIGHT SIDE WINDOW OVERHEAT LIGHT ILLUMINATED DURING FLIGHT AT 34,000 FT. ACFT GROUNDED. ACCOMPLISHED QRH, TURNED SWITCH OFF FOR 5 MINUTES THEN TURNED BACK ON. OVERHEAT LIGHT DID NOT COME BACK ON FOR REMAINDER OF FLIGHT.Feb 8, 2018 · N471AS · Boeing 737990ER · Windshield/Door Rain/Ice RemovalSDR ASAA2018012623309Display · malfunctionedDURING CRUISE, THE CAPTAIN'S ND DISPLAYED VTK, CAPTAIN`S MCDU WENT TO MENU, CWR MODE ENTERED IN ROLL MODE AND LANDING DISTANCE FLAG APPEARED BELOW ALTITUDE STRIP AFTER APPROXIMATELY 15 SECONDS, SYSTEMS RETURNED TO NORMAL. ACFT GROUNDED. PERFORMED A BITE CHJan 26, 2018 · N471AS · Boeing 737990ER · Flight Management Computing Hardware SystemSDR ASAA2018010223081Control Panel · malfunctionedAUTOPILOT B COMMAND BULB INOPERATIVE. ACFT GROUNDED. REMOVED AND REPLACED DFCS MODE CONTROL PANEL WITH SERVICEABLE UNIT IAW AMM 22-11-34/401. PERFORMED INSTALLATION TEST IAW AMM 22-11-34. OPS CHECKED GOOD.Jan 2, 2018 · N471AS · Boeing 737990ER · Autopilot SystemSDR ASAA2017122022969Floorbeam · corrodedFWD CARGO BAY FLOORBEAM ANGLE AT BS 500L IS CORRODED LBL 21 - RBL 21. ACFT GROUNDED. REMOVED AND REPLACED THE ANGLE IAW SRM 51-40-02 AND DWG 143A9485, REV B.Dec 20, 2017 · N471AS · Boeing 737990ER · Fuselage Main, Floor BeamSDR ASAA2017112622703Warning Light · false activationCENTER TANK FUEL QUANTITY INDICATOR WAS INDICATING INTERMITTENT READINGS AT CRUISE. TOTALIZER IS BLANK. ACFT GROUNDED. REMOVED THE HARNESS 28400003-1 AND REINSTALLED CONNECTOR D11316, AND BUSSING PLUG. PERFORMED FIM 28-41 TASK 814, FQIS BITE TEST NOW PASSNov 26, 2017 · N471AS · Boeing 737990ER · Fuel Indicating System
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