Boeing 737-890

Service difficulty reports · 23,038

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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 aircraft_model_key = '737890'
  ORDER BY difficulty_date DESC"

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SDR ASAA2023102745941Power Supply · dischargedEMERGENCY LIGHTS ASSOCIATED WITH POWER SUPPLY M1695 ARE INOP. GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY M1695 IAW B737NG AMM 33-51-06-960 806 OPS CHECK GOOD.Oct 27, 2023 · N558AS · Boeing 737890 · Emergency LightingSDR ASAA2023102745884Unknown · unknownCONT CAB ZONE TEMP LIGHT ILLUMINATED WITH MASTER CAUTION RECALL. GROUNDED - YES. (RESOLVED ON W/O: 1974877 TASKCARD: N/R-00003 ) PREFORMED BITE ON PACK TEMPERATURE CONTROL UNITS. FOUND #2 CONTROLLER PREVIOUSLY FAULTING FLT DECK TRIM VALVE. NO CURRENT FAULTS PROct 27, 2023 · N564AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2023102645905Lens · missingEXIT LENS COVER OVER R1 DOOR FELL OFF. GROUNDED - YES. REMOVED AND REPLACED R1 DOOR EXIT SIGN LIGHT ASSY REF AMM 33-51-01. OPS CHK GOOD.Oct 26, 2023 · N596AS · Boeing 737890 · Emergency LightingSDR ASAA2023102645877Windshield · crackedRIGHT FWD WINDOW OVERHEAT LIGHT FOLLOWED BY RIGHT FWD WINDSHEILD CRACK ON OUTER PANEINIDRATED MIG 2C 40-0052475 37813 10-26-2023. GROUNDED - YES. AIR TURNBACK - REMOVED # 1 FO WINDOW, REF AMM 56-11-11. INSTALLED FO WINDOW FOUND WINDOW DIMENSIONS TO BE OUT OF LOct 26, 2023 · N536AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2023102645853Unknown · unknownRH PACK LIGHT ILLUMINATES ON RECALL. RESETS W/ MC. GROUNDED - YES. (RESOLVED ON W/O: 1975207 TASKCARD: N/R-00001 ) INITIAL EVALUATION, NO PACK LT LH/RH ON MASTER RECALL. PZTC BITE IAW FIM 21-62 TASK 801. #2 CONTROLLER FOR RH PACK, NO FAULTS. #1 PZTC HAD CONTROOct 26, 2023 · N590AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2023103045842Unknown · unknownUPON WALKAROUND APU SURGING 3 TIMES. GROUNDED - YES. (RESOLVED ON W/O: 1973105 TASKCARD: N/R-00002 ) PERFORMED MULTIPLE DRY MOTORS & ENGINE STARTS. COULD NOT DUPLICATE. NO FALTS FOUND. NO LEAKS FOUND. CHECKED HISTORY. PER FIM 810 SUSPECTED TO BE INTERMITTENT FOct 25, 2023 · N592AS · Boeing 737890 · APU Bleed Air SystemSDR ASAA2023102445924Tube · leakingAPU OIL CONSUMPTION INSPECTION DUE TO REPORT OF EXCESSIVE SERVICING. (#PRI2/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1975592 TASKCARD: N/R-00001 ) REMOVED AND REPLACED APU TURBINE OIL SCAVENGE LINE I/A/W AMM 20-50-11. GROUND VERIFICATION CHECK GOOD I/A/W AMM Oct 24, 2023 · N586AS · Boeing 737890 · APU Oil SystemSDR ASAA2023102445861Pump · leakingDURING CLIMBOUT, APPROXAMATLY FL250-300, LOW PRESSURE INDICATION ON HYD PUMP 1, SYS A. TURNED OFF PER QRH GUIDANCE. QUATITY WAS APPROXIMATLY 65%, PRESSURE NORMAL. QUANTITY SUBSEQUENLY INCREASED, ALL THE WA TO 100%. REMAINED NORMAL QUANTITY FOR REST OF RETURN TOct 24, 2023 · N564AS · Boeing 737890 · Hydraulic Pump (Electric/Engine), MainSDR ASAA2023102445829Unknown · unknown#1 AUTO THROTTLE DID NOT COME UP ON TOGA #2 OPERATES NORMALLY. GROUNDED - YES. (RESOLVED ON W/O: 1975213 TASKCARD: N/R-00001 ) PERFORMED AUTOTHROTTLE BITE NO FAULTS FOUND.PERFORMED SERVOMOTOR TEST.TEST PASSED.NO HISTORY WITHIN LAST 30 DAYS.PERFORMED LAND VERIFOct 24, 2023 · N585AS · Boeing 737890 · Auto Throttle SystemSDR ASAA2023102445827Valve · faultyWITH CONT CAB TEMP KNOB POSITIONED TO FULL WARM ( CLOCKWISE) FLIGHT DECK STILL VERY COLD & MAX DUCT TEMP OF 26DEG C. GROUNDED - YES. (RESOLVED ON W/O: 1974467 TASKCARD: N/R-00005 ) ACCOMPLISHED FIM 21-61 TASK 861 AND REPLACED TRIM AIR PRSOV REF AMM 21-62-01/40Oct 24, 2023 · N581AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2023102445833Pump · leaking#1 ENG HYD PUMP LEAKING RETURN MATING SURFACE. GROUNDED - YES. REMOVED AND REPLACED #1 ENG HYD (EDP) PUMP REF B737-800 AMM 29-11-11. WHILE PERFORMING A SYS FLUSH, FOUND CASE DRAIN QUICK DISCONNECT LOOSE AND NOT SEATED PROPERLY AT PYLON. ACCOMPLISHED A SYS BLEEOct 24, 2023 · N564AS · Boeing 737890 · Hydraulic Pump (Electric/Engine), MainSDR ASAA2023102345793Unknown · unknownREF TC 78273000. #1 ENG FAULT DISPLAYS SHORT TERM 75-30451, THE VBV POSTITION SIGNALS DISAGREE. GROUNDED - YES. (RESOLVED ON W/O: 1975071 TASKCARD: N/R-00001 ) PERFORMED FIM 75-32 TASK 803. ENG #1 EEC BITE TEST SHOWS NO FAULTS IN THE LAST 10 LEGS HISTORY. THISOct 23, 2023 · N538AS · Boeing 737890 · Compressor Bleed ControlSDR ASAA2023102345792Unknown · unknownWHILE PERFORMING TASK CARD 78273000, FOUND ENGINE 2 FAULTMSG NBR: 75-10462 THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. ECONOMIC. GROUNDED - YES. ON DEFERRAL.Oct 23, 2023 · N506AS · Boeing 737890 · Engine Cooling SystemSDR ASAA2023102345789Unknown · unknownWHILE PERFORMING TASK CARD 78273000, FOUND FAULT 75-20372"THE HMU VSV CONTROL CURRENT IS OUT OF RANGE." ON ENG 2. GROUNDED - YES. ON DEFERRAL.Oct 23, 2023 · N535AS · Boeing 737890 · Fuel Controlling SystemSDR ASAA2023102345795Unknown · unknownRIGHT SIDE WINDOW OVERHEAT ILLUMINATED. GROUNDED - YES. FOUND C/B, WINDOWPOWER RIGHT SIDE ON P6-4 OPEN, RESET PER AMM 20-60-05. PERFORMED WINDOW HEAT CONTROLLER UNIT SYSTEM TEST. TEST PASSED. WINDOW RIGHT SIDE OPS NORMAL PER AMM 30-41-11.Oct 23, 2023 · N517AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2023102345794Unknown · unknownRIGHT FMC WENT BLANK IN FLIGHT. CALL FAIL, MSG, OFFSET AND EXECUTE LIGHT ALL LIT UP. THEN RECEIVED BITE TEST COMPLETE ON SCREEN AND RETURNED FULL OPERATION OF THE RIGHT FMC. GROUNDED - YES. PERFORMED FIM 34-61 TASK 807. NO FAULTS NOTED. NO 30 DAY HISTORY.Oct 23, 2023 · N531AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2023102245765Unknown · unknownWHILE ACCOMPLISHING T/C 78273000, #2 ENG HAD ECONOMIC FAULT 77-20862, BOTTOM LEFT EGT SIGNAL. GROUNDED - YES. ON DEFERRAL.Oct 22, 2023 · N560AS · Boeing 737890 · Engine Temperature Indicating SystemSDR ASAA2023102245832Fire Detector · faultyIN FLIGHT, FAULT LIGHT ILLUMINATED WITH OVHT/DET SWITCH ON "A" PER MEL OF B LOOP. GROUNDED - YES. DIVERSION - ACCOMPLISHED B737-800 FIM 26-10 TASK 801 CONTROLLER BITE FAULT LIGHTS ON FOR BOTH ENGINES AND APU. ACCOMPLISHED RESISTANCE CHECK FOR #2 ENG PER B737-8Oct 22, 2023 · N519AS · Boeing 737890 · Detection SystemSDR ASAA2023102245822Sensor · faultyIN CRUISE LEFT DUCT PRESSURE 45 RIGHT DUCT PRESSURE 5. GROUNDED - YES. COMPLETED B737-800 FIM TASK 36-10, FAULT ISOLATION PROCEDURES PARTS 1-8,10-25. TESTS INCONCLUSIVE. NO DEFECTS NOTED AT THIS TIME. ACCOMPLISHED PNEUMATIC HEALTH CHECK REF NG-36WC-00001. EXCEOct 22, 2023 · N570AS · Boeing 737890 · Pneumatic Distribution SystemSDR ASAA2023102245798Unknown · unknownSPEED SELECTOR BUTTON ON MCP ERRATIC WHEN TRYING TO SELECT YOUR SPEED. GROUNDED - YES. NO FAULT REGISTERED BY FLIGHT LEG 1. REF FIM 22-11 TASK 801. PERFORMED MCP TESTS IAW FIM 22-11 TASK 803.. TEST PASSED. NO LAST 30 DAYS HISTORY. OK FOR SERVICE.Oct 22, 2023 · N568AS · Boeing 737890 · Autopilot SystemSDR ASAA2023102245796Unknown · unknownMASTER CAUTION ZONE TEMP CONT CAB ILLUMINATED ON RECALL. GROUNDED - YES. (RESOLVED ON W/O: 1974724 TASKCARD: N/R-00002 ) PERFORMED ZONE PACK TEMP CONTROLLER BITE REF AMM 21-61-00. NO DEFECTS FOUND. THIS CLEARS MEL 21-21G. C/N 22028562 REMOVED. SEAMC ANDY NOTIFOct 22, 2023 · N562AS · Boeing 737890 · Cabin Temperature Control SystemSDR ASAA2023102245754Unknown · unknownFFMG - AUTO FAIL LIGHT ON PRESS MODE SELECT PANEL. GROUNDED - YES. CPC #2 BITE INDICATES MESSAGES 101 AND 006. FAULTS CLEAR PER B737-800 FIM 21-31 TASK 801. CONFIRMED BOTH CONTROLLERS CONTAIN NO FAILURES THEREAFTER. ETOPS GROUND VERIFICATION SUCCESSFUL.Oct 22, 2023 · N562AS · Boeing 737890 · Cabin Pressure Control SystemSDR ASAA2023102145768Fire Detector · faultyFAULT LIGHT ILLUMINATED DURING TAXI IN. GROUNDED - YES. C/W FIRE DETECTION BITE TEST PER B737-800 FIM 26-10 TASK 801. FOUND FAULT ENGINE #2 LOOP 'B' LOW DETECTOR RESISTANCE. ENGINE #2 LOOP 'A' IS GOOD. ACCOMP FIM TASK 26-10 TASK 801 CONTROLLER BITE FAULT LIGHTOct 21, 2023 · N519AS · Boeing 737890 · Fire DetectionSDR ASAA2023102145755Actuator · faultedDURING DESCENT CHECKLIST RECALL - LEFT PACK LIGHT ILLUMINATED AND IS RESETTABLE. GROUNDED - YES. (RESOLVED ON W/O: 1974348 TASKCARD: N/R-00002 ) CONFIGURATION CHANGES REVERSED FOR MEL 21-5C. LH RAM AIR INLET ACTUATOR REMOVED AND REPLACED PER AMM 21-51-21-000-8Oct 21, 2023 · N587AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2023102145781Lens · missingR2 DOOR EXIT SIGN LIGHT COVER MISSING. GROUNDED - YES. REPLACED R2 EM. LIGHT EXIT LIGHT LENS, OK FOR SERVICE.Oct 21, 2023 · N508AS · Boeing 737890 · Emergency LightingSDR ASAA2023102145772Pump · faultyENG 1 HYD PULP LOW PRESSURELT ILLUMINATED ELEC 2 HYD PUMPLOW PRESS LT ILLUMINATED IN 1 HR BEFORE LANDINGENG 2 HYD PUMP LOW PRESS LT ILLUMINATED, BUT EXTINGUISHED DECENDING ALT 18,000. GROUNDED - YES. REMOVED ENG 1 DRIVEN PUMP REF AMM 29-11-11.54204 10-22-2023.Oct 21, 2023 · N564AS · Boeing 737890 · Hydraulic Pump (Electric/Engine), MainSDR ASAA2023102045780Pushrod · brokenAPU FAIL TO START 3X. GROUNDED - YES. INLET DOOR SHUTDOWN F/C 49-15004 APU DEFERRED PER MEL 49-1B. FOLLOWING B737-800 FIM 49-10 TASK 806 WITH APU SWITCH SET TO "ON" POSITION, DOOR DOES NOT MOVE. APU INLET DOOR REMOVED & REPLACED DUE TO BROKEN PUSHRODS. APU OP Oct 20, 2023 · N589AS · Boeing 737890 · Airborne Auxiliary Power Unit (APU) SystemSDR ASAA2023102045777Unknown · unknownL2 WINDOW HEAT OVERHEAT LIGHT ILLUMINATED DURING CLIMBOUT. GROUNDED - YES. PERFORMED WINDOW HEAT CONTROL UNIT SYSTEM TEST ON L2 WINDOW REF B737-800 AMM 30-41-11. OPS CHECK GOOD.Oct 20, 2023 · N518AS · Boeing 737890 · Windshield/Door Rain/Ice RemovalSDR ASAA2023102045767Unknown · unknownSHOWING ENGINE FIRE /OVERHEAT FAULT LIGHT. GROUNDED - YES. CONFIRMED FAULT, #2 ENGINE B-LOOP FAILS TEST. TROUBLESHOT TO DEFECTIVE UPPER FAN (M1757) WIRING CHAFFING. REPAIRED WIRE REF SWP. #2 ENGINE FIRE DETECTOR SYSTEM A & B LOOPS OPS CK NML REF AMM 26-11-00-7Oct 20, 2023 · N519AS · Boeing 737890 · Detection SystemSDR ASAA2023102045766Unknown · unknownENGINE # 2 FIRE SYSTEM A FAULT. GROUNDED - YES. IN E&E BAY FOUND FIRE AND OVERHEAT CONTROL MODULE LOOPS A&B INDICATORS FOR BOTH ENGINES FLASHING SUSPECT FAULTY BOX RB12932 AFTER RE-SEATING MODULE ALL LOOPS TESTED NORMAL REF LP 60736808. REPAIRED WIRING DISCREPOct 20, 2023 · N519AS · Boeing 737890 · Detection SystemSDR ASAA2023102045759Unknown · unknownLEFT LPACK LIGHT ILLUMINATED ON RECALL. GROUNDED - YES. ACCOMPLISHED PACK TEMP CONTROLLER BITE CK, FOUND TCV FAULT ON ZONE TEMPCONTROLLER 1, AFTER COMPLETING BITE CK HAD GREEN GO LIGHTS, RESET FAULTNO HISTORY LAST 30 DAYS, SEAMC JEREMY NTOFIED.Oct 20, 2023 · N512AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2023101945783Unknown · unknownPWS FAIL AND WXR FAIL ANT IN FIGHT. BOTH NAV AND AUTO MODES AFFECTED. TRIED WX AND WX+T MODES. ALL INOP. GROUNDED - YES. DIVERSION - FOUND PWS FAIL INDICATED ON BOTH N.D.'S RECYCLED WXR POWER ACCOMPLISHED OPS TEST AMM 34-43-00 OPS CHECK NORMAL NO FAULTS, GPWS Oct 19, 2023 · N566AS · Boeing 737890 · Weather Radar SystemSDR ASAA2023101945752Unknown · unknownL PACK LIGHT ILLUMINATED SINGLE CHANNEL FAULT. GROUNDED - YES. REF FIM 21-53 TASK 821, PERFORMED PZTC 1 + 2 BITE, PZTC 1 HAD RAM AIR ACTUATOR FAULT LIGHT. REF FIM 21-62 TASK 837 PERFORMED OPS TEST OF PACK 1, OPS TEST GOOD, L/H PACK LIGHT NOT ILLUMINATED, PERFOOct 19, 2023 · N587AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2023101945751Pump · faultyHYD ENG 1 A LOW PRESS LIGHT ON. HYD A QUANTITY DECREASED TO 20%. GROUNDED - YES. REMOVED RETURN FILTER ELEMENT HYDRAULIC SYST "A" PER AMM 29-11-61-000-801 UP TO STEP 2D PARAGRAPH 4. MP80017HYD ENG 1 A PUMP (EDP) REMOVED AND INSTALLED PER AMM 29-11-11 SD 14146.Oct 19, 2023 · N564AS · Boeing 737890 · Hydraulic System, MainSDR ASAA2023101945742Bracket · missingREF T/C N8420001 MW0326 HARNESS #2 ENG. REQ. TWO CLAMP GROMMETS. GROUNDED - YES. REPLACED TWO CLAMP GROMMETS ON MW0326 HARNESS. REF AMM 26-11-025. NO DAMAGE NOTED TO HARNESS GND VERIFICATION SUCCESSFUL.Oct 19, 2023 · N529AS · Boeing 737890 · Fuselage Miscellaneous StructureSDR ASAA2023101945736Screen · damagedWHILE ACCOMPLISHING .T/C 78472040 FOUND CHIP DETECTOR SCREEN ON AGB/TGB MCO TO BE DAMAGED. GROUNDED - YES. INSTALLED NEW SCAVENGE SCREEN REF. MM79-0000-200-801.Oct 19, 2023 · N593AS · Boeing 737890 · Engine Oil System (Airframe Furnished)SDR ASAA2023101845859Actuator · faultyBLUE LIGHT ILLUMINATED ON THE NITROGEN SYSTEM. GROUNDED - YES. (RESOLVED ON W/O: 1974467 TASKCARD: N/R-00004 ) REMOVED AND REPLACED L/H RAM AIR DOOR ACTUATOR PER FIM 47-31 TASK 819 AND AMM 21-51-21. OPS CHK GOOD. PACK / ZONE TEMP CONTROLER SHOWS RAM AIR CONT FOct 18, 2023 · N581AS · Boeing 737890 · Cabin Cooling SystemSDR ASAA2023101845745Unknown · unknownVTK ANNUNCIATION FO SIDE, LNAV DISENGAGE NO OTHER INDICATIONS VTK WENT AWAY IN APPROX. 10-15 SEC. GROUNDED - YES. REBOOTED RT FMC - SYS OPS OK.Oct 18, 2023 · N596AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2023101845726Unknown · unknownWHILE ACCOMPLISHING T/C 7827300, FOUND FAULT MSG 73-31712 ON #2 ENG. GROUNDED - YES. ACCOMPLISHED FIM TASK 73-28 TASK 801. #2 ENG BITE EEC TESTED GOOD W/O FAULTS. POSSIBLE INTERMITTENT FAULT.Oct 18, 2023 · N536AS · Boeing 737890 · Fuel Controlling SystemSDR ASAA2023101845725Exciter · faultyAPU WOULD NOT START AND FAULT LT ILLUMINATED. GROUNDED - YES. (RESOLVED ON W/O: 1974128 TASKCARD: N/R-00001 ) VERIFIED FAULT CODE 49-41011 IS IN HISTORY AS LAST LEG. C/W FIM TASK 49-40 TASK 802, NOTED POSITIVE FUEL FLOW ON TROUBLESHOOTING REPLACED IGNITER PLUGOct 18, 2023 · N588AS · Boeing 737890 · APU Start/Ignition SystemSDR ASAA2023101745721Unknown · unknownA/C LANDED 20 FEET LEFT OF CENTERLINE. GROUNDED - YES. ACCOMPLISHED LAND VERIFY TEST REF AMM 22-11-00-700-801. ALL TEST PASS. THIS CLEARS MEL 22-20B AND 22-99B C/N: 17093586 SEAMC CARL NOTIFIED AND PLACARD REMOVED. APPROACH SURVEY UPDATED.Oct 17, 2023 · N586AS · Boeing 737890 · Autopilot SystemSDR ASAA2023101745706Unknown · unknownWHILE PERFORMING T/C 78273000, FOUND #2 ENG ECONOMIC FAULT CODE 75-20462, THE HPTACC DEMAND AND POSITION SIGNALS DISAGREE. GROUNDED - YES. ON DEFERRAL.Oct 17, 2023 · N506AS · Boeing 737890 · Engine Bleed Air SystemSDR ASAA2023101745740Packing · leakingFOLLOW-UP TO #2 IDG FREQUENT SERVICING. (#PRI2/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1973837 TASKCARD: N/R-00001 ) C/W LEAK CHECK WITH A TEN MINUTE IDLE RUN. FOUND PISTON COVER PLATE LEAKING . PLATE IS BELOW IDG RECONNECT RING & ABOVE AFT FILTER. NO EXTERNOct 17, 2023 · N514AS · Boeing 737890 · AC Generator-AlternatorSDR ASAA2023101745703Control Panel · faulty"B" - 2ND AUTO PILOT FAILED TO ENGAGE DURING ATTEMPTED AUTOLAND APPROACH. GROUNDED - YES. (RESOLVED ON W/O: 1973033 TASKCARD: N/R-00002 ) REMOVED AND REPLACED MCP PER AMM 22-11-34.ALL LLM TESTS C/W. NO FAULTS NOTED. REMOVED PLACARD. REMOVED MEL'S 22-1F AND 22-Oct 17, 2023 · N512AS · Boeing 737890 · Autopilot SystemSDR ASAA2023101745699Controller · faultyAUTOFAIL LIGHT ILLUMINATED. GROUNDED - YES. (RESOLVED ON W/O: 1973033 TASKCARD: N/R-00004 ) REMOVED AND REPLACED #1 CPC PER AMM 21-31-01. NO FAULTS NOTED. REMOVED PLACARD. REMOVED MEL 21-14C. RESTORED CONFIGURATION CHANGE. SEAMC DAVE NOTIFIED.Oct 17, 2023 · N512AS · Boeing 737890 · Cabin Pressure ControllerSDR ASAA2023101745723Fmc · faultyAFTER LANDING FMC DISAGREE FROM BOTH FMC MENUS AND VTK APPEARS ON CAPT ND. GROUNDED - YES. FIM 34-61 TASK 801, FMC-L BITE TEST FUNCTION INOP, FO SIDE FMC SHOWS FMC-L FAULTED PGM FAULT, FMC TO CDU-L & R, ALSO FOUND FMC VALID GREEN LED NOT ON, REPLACED NEW FMCS-Oct 17, 2023 · N519AS · Boeing 737890 · Flight Management Computing Hardware SystemSDR ASAA2023101745722Processor · faultyRIGHT FUEL GAUGE IS BLANK. GROUNDED - YES. PERFORMED FUEL QTY BITE. REF AMM 28-41-00. FOUND FAULT CODES 28-41209 & 28-41215. ON THE LAST COUPLE LEGS. R&R FUEL QTY PROCESSOR UNIT REF AMM 28-41-81/ 401. PERFORMED OPS TEST OF FUEL QTY INDICATING SYS . REF AMM 28-Oct 17, 2023 · N592AS · Boeing 737890 · Fuel Indicating SystemSDR ASAA2023101745705Unknown · unknownON T/C 78273000 FOUND SHORT TIME FAULT 75-20372 ON ENG 2. GROUNDED - YES. (RESOLVED ON W/O: 1973842 TASKCARD: N/R-00001 ) PERFORMED BITE OF ENG 2, VERIFIED FAULT CODE 75-20372. INSPECTED CONNECTOR DP0601 FOR RESISTANCE CHECKS, FOUND ERRONEOUS READINGS. CLEANEDOct 17, 2023 · N535AS · Boeing 737890 · Fuel Controlling SystemSDR ASAA2023101645702Control Panel · inoperativeAUTOPILOT A DISCONNECTED TWICE IN CRUISE, AUTOPILOT B DISCONNECTED ONCE IN CRUISE. NO APPARENT CAUSE NOTED. GROUNDED - YES. RELEASED PER MEL 22-1G BOTH AUTOPILOT INOP AND MEL 22-99B CATIII AUTOLANDNOT AUTHORIZED. AUTH BY SEAMC JARED @ 0005Z. DFCS BITE PROCEDUROct 16, 2023 · N577AS · Boeing 737890 · Autopilot SystemSDR ASAA2023101645701Modulating Valve · faultyTECH SERVICE REQUEST. FOLLOW UP TO REPORT OF CONTROL CABIN ZONE TEMP ON RECALL.PRI2. GROUNDED - YES. (RESOLVED ON W/O: 1973340 TASKCARD: N/R-00004 ) PER. TECH SERVICE REQUEST (TSR), REMOVED AND REPLACED CONTROL CABIN TRIM AIR MODULATING (CONTROL) VALVE I.A.W. Oct 16, 2023 · N518AS · Boeing 737890 · Cabin Temperature Control System
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