Boeing 737-401

Service difficulty reports · 2,961

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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 = '737401'
  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 4TXA2026010422501Computer · intermittent#3 MLG TIRE BLEW ON LANDING ROLL. REQUIRED CONDITIONAL INSPECTION. PERFORMED CONDITIONAL INSPECTION I.A.W. AMM 05-51-54, NO OTHER DEFECTS NOTED. REMOVED AND REPLACED #3 MLG WHEEL ASSY PER AMM 32-45-11. ANTI-SKID CONTROL SYSTEM CHECKED, FAILED LOCKED WHEEL PROTJan 3, 2026 · N804TJ · Boeing 737401 · Brake Anti-Skid SectionSDR 4TXA202512120001Hydraulic System · leakingDURING TAKE-OFF FO NOTICED HYDRAULIC SYSTEM A "LOW PRESSURE" LIGHT ILLUMINATED. THEN CHECKED SYSTEM A HYDRAULIC QUANTITY WHICH WAS FOUND TO BE AT 0. PILOTS IMMEDIATELY DECLARED EMERGENCY.Dec 9, 2025 · N804TJ · Boeing 737401 · Hydraulic System, MainSDR 2025F00250Bolt · missingON LANDING AS THE NOSE TOUCHED DOWN THE AIRCRAFT STARTED VEERING TO THE LEFT. BOTH REVERSERS WERE NORMAL AND SPEED BRAKE UP. USED DIFFERENTIAL BRAKING BUT WOULD NOT HOLD ON CENTER LINE. USED RIGHT TILLER TO ASSIST BUT IT SUDDENLY JAMMED TO THE LEFT FORCEFULLY.Oct 24, 2025 · N804TJ · Boeing 737401 · Landing Gear Steering SystemSDR I5EA2023052200007Battery Pack · dischargedR/H AFT OVERWING EMERGENCY EXIT LIGHT INOP. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT M1136, STA. 735L, OPS CHECK GOOD IAW B737-400, AMM 33-51-51May 21, 2023 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2023041900002Battery Pack · no testMID CABIN EMERGENCY LIGHTS INOP. REMOVED AND REPLACED EMERGENCY BATTERY M1479 AT STA.598R WITH SERVICEABLE UNIT AND TEST IAW B737-400 AMM 33-51-51. TEST OK.Apr 19, 2023 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2023041900001Battery Pack · no testFWD CABIN EMERGENCY LIGHTS INOP. REMOVED AND REPLACED EMERGENCY BATTERY M1132 AT STA. 330R WITH SERVICEABLE UNIT AND TEST IAW B737-400 AMM 33-51-51. LIGHTS TEST OK.Apr 19, 2023 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2023060800001Skin · dentedDENT AT STA380 - STA400 BETWEEN STR14L TO STR16LJun 8, 2022 · N804TJ · Boeing 737401 · Fuselage Main, Plate/SkinSDR I5EA2021111800004None · noneAIRCRAFT DAMAGED BY PUSHBACK TUG. REPAIRED EXTERNAL FUSELAGE SKIN AT FUSELAGE STA.203.8 BL 0.0 IAW EO #211109 REV. INITIAL.Nov 18, 2021 · N418US · Boeing 737401 · Fuselage Structure (General)SDR I5EA2021091100004Battery Pack · no testAFT SERVICE DOOR OVERHEAD EMERGENCY EXIT LIGHT INOP. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT STA. 960R/M1137 AND OPS CHECKED GOOD. IAW B-737-400 AMM 33-51-51.Sep 11, 2021 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2021091100003Battery Pack · no testAFT ENTRY DOOR EMERGENCY EXIT LIGHT INOP. REMOVED AND REPLACED EMERGENCY BATTERY PACK AT STA. 960L/M1197 AND OPS CHECKED GOOD. IAW B737-400 AMM 33-51-51.Sep 11, 2021 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2021091100002Battery Pack · no testEMERGENCY PATH LIGHT AT 16L INOP. REMOVED AND REPLACED BATTERY PACK AT STA 629L/M1134 AND OPS CHECKED GOOD. IAW B737-400 AMM 33-51-51Sep 11, 2021 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2021081700013Battery Pack · inoperativeFWD CABIN RH EMERGENCY LIGHTS INOP. REMOVED AND REPLACED FWD CABIN RH EMERGENCY BATTERY ASSY. M1132 IAW B737 AMM 33-51-51, OPS CHECK GOOD.Aug 17, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021081700221Battery · inoperativeFWD. CABIN R/H EMERGENCY EXIT LIGHTS INOPERATIVE. REMOVED AND REPLACED FORWARD CABIN R/H EMERGENCY BATTERY ASSEMBLY. M1132. IAW B-737 AMM 31-51-51. OPS CHECK GOOD.Aug 17, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021081600011Battery Pack · no testOVER WING EMERGENCY EXIT LIGHT INOP. REMOVED AND REPLACED EMERGENCY EXIT BATTERY M1134 AT STA 634L AND TEST IAW B737-400 AMM 33-51-51. TEST GOOD. PN ON 2013-1ASMI, SN ON 11814.Aug 16, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021080500006Battery Pack · no testBOTH FWD EMERGENCY EXIT LIGHT OVER WING INOP. REMOVED AND REPLACED BATTERY PACK AT M1435 STA 727G R IAW B737-400 AMM 33-51-51. OPS CHECK GOOD.Aug 5, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021080500005Battery Pack · no testEMERGENCY AISLE LIGHT AT L547 INOP. REMOVED AND REPLACED BATTERY PACK AT M1136 STA 753L IAW B737-400 AMM 33-51-51. OPS CHECK GOOD.Aug 5, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021080500004Power Supply · no testPOWER SUPPLY FOR EMERGENCY LIGHT M1137 STA 975R NOT CHARGING. REMOVED AND REPLACED WITH SERVICEABLE POWER SUPPLY AT STA 975R IAW B737-400 AMM 33-51-51. OPS CHECK GOOD.Aug 5, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021080500003Power Supply · no testPOWER SUPPLY FOR EMERGENCY LIGHT M1197 STA 960L NOT CHARGING. REMOVED AND REPLACED WITH SERVICEABLE POWER SUPPLY AT STA 960L IAW B737-400 AMM 33-51-51. OPS CHECK GOOD.Aug 5, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021080500002Battery Pack · no testL/H AFT EMERGENCY EXIT LIGHT AT L2 DOOR INOP. REMOVED AND REPLACED AFT L/H BATTERY PACK AT MODULE M1197 STA 960L IAW B737-400 AMM 33-51-51. OPS CHECK GOOD.Aug 5, 2021 · N418US · Boeing 737401 · Emergency LightingSDR I5EA2021081000007Battery Pack · no testOVERWING EXITS LIGHTS ON RIGHT SIDE INOP. PERFORMED CHARGE THE EMERGENCY LIGHT BATTERY POWER SUPPLY IAW AMM 33-51-51, OPS CHECK GOOD. IAW AMM 33-51-02Jul 27, 2021 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2021060300001Battery Pack · no testEMERGENCY EXIT LIGHTS OUT ROW 12. REMOVED AND REPLACED BATTERY ASSY PACK IAW AMM B737-400 33-51-51, OPS CHECK GOOD.Jun 3, 2021 · N420US · Boeing 737401 · Emergency LightingSDR I5EA2021042000006Battery Pack · inoperativeEMERGENCY BATTERY PACK INOP AT STA 622R, CONNECTOR M1135. REMOVED AND REPLACED BATTERY PACK M1135, OPS CHECK GOOD, IAW B737-400 AMM 33-51-51.Apr 20, 2021 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2021041700005Power Supply · no testEMERGENCY LIGHTS ON L/H SIDE ISLE FROM ROW 20-24 INOP. PERFORMED T/S AND FOUND BAD POWER SUPPLY (M1197). REMOVED AND REPLACED THE POWER SUPPLY M1197 @STA 960L, PERFORMED OPS CHECK OF EMERGENCY LIGHT SYSTEM IAW WDM 33-51-15 AND B737 AMM 33-51-51 AND 33-51-02.Apr 17, 2021 · N420US · Boeing 737401 · Emergency LightingSDR I5EA2021011200004Battery Pack · no testEMERGENCY LIGHT INOPERABLE AT L1065. REMOVED AND REPLACED EMERGENCY LIGHT BATTERY PACK AT M1136 STA 753L AND TEST, IAW B737-400 AMM 33-51-51. OPERATIONS CHECK GOOD.Jan 12, 2021 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020121600005Battery Pack · dischargedPOWER SUPPLY FOR EMERGENCY LIGHT M1435 STA 727G (R) INOPERABLE. REMOVED AND REPLACED BATTERY PACK AT M1435 STA 727G (R). OPERATIONS CHECK GOOD, IAW B737-400 AMM 33-51-51.Dec 16, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020121600004Power Supply · inoperativePOWER SUPPLY FOR EMERGENCY LIGHT M1136 STA 753L IS NOT CHARGING. REMOVED AND REPLACED POWER SUPPLY FOR EMERGENCY LIGHT M1136 AT STA 753L. OPERATIONS CHECK GOOD, IAW B737-400 AMM 33-51-51.Dec 16, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020100500001Clamp · looseBLEED TRIP OFF LIGHT ILLUMINATED VARIOUS TIMES WITHIN SECONDS. RAN QRH PROCEDURE TO RESET UNTIL IT WOULD NOT RESET ANYMORE, THEN TURNNED LT PACK OFF PER QRH AND CABIN ALT ROSE ABOVE 10. THE WARNING HORN ACTIVATED AND WENT TO MANUAL AC, CABIN ALT AND PRESS CHSep 2, 2020 · N804TJ · Boeing 737401 · Pneumatic Distribution SystemSDR I5EA2020080500001Battery Pack · inoperativeR-1 EMERGENCY EXIT SIGN FAILS TO ILLUMINATE. CORRECTIVE ACTION: REMOVED AND REPLACED R-1 EMERGENCY LIGHT POWER SUPPLY AT STA.330L EQUIP #1133. OPS CHECK GOOD IAW B737-400 AMM 33-51-12Aug 5, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020030404Battery Pack · dischargedEMERGENCY LIGHT BATTERY PACK INOP AT M1197, STA 969.L, D3122Mar 3, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020030403Battery Pack · dischargedEMERGENCY LIGHT SUPPLY ASSY INOP M1137, D2966, STA 960RMar 3, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020030402Power Supply · inoperativeEMERGENCY LIGHT POWER SUPPLY ASSY INOP M1134, D2690, STA 634LMar 3, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2020030401Power Supply · inoperativeEMERGENCY LIGHT SUPPLY ASSY INOP M1479, D10212, STA598RMar 3, 2020 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2019112603Relay · malfunctionedLOSS OF ENGINE INDICATION, GEAR WARNING LIGHT ON. SUPPLEMENTAL INFORMATION, REMOVED AND REPLACED R1 RELAY PN: A414-055335-05 SN: 10-1722 IAW WDM 24-56-01 AND 24-31-11, 24-32-01 AND REMOVED AND REPLACED M562 CIRCUIT CARD PN: 69-60761-5 IAW SWPM 20-41-01 AND PENov 23, 2019 · N804TJ · Boeing 737401 · AC Power Distribution SystemSDR I5EA2019112905Unknown · malfunctionedWHEN LEAVING, LANDING GEAR POSITIONED UP, HANDLE JAMMED, HAD TO PULL THE TRIGGER. NOSE GEAR AND RT MLG INDICATION REMAINED RED. CONTINUED FOR PROPER MX SUPPORT. PERFORMED QRH PROCEDURE. SUPPLEMENTAL INFORMATION: ACCOMPLISHED AC JACKING IAW AMM 07-11-11, ANov 20, 2019 · N804TJ · Boeing 737401 · Landing Gear Retraction/Extension SystemSDR I5EA201910231001Indicator · malfunctioned#1 ENGINE EGT SURGE TO 1300'C MULTIPLE TIMES (3 TIMES LESS THAN 1 MINUTE SECOND EACH)Oct 21, 2019 · N420US · Boeing 737401 · Engine Indicating SystemSDR I5EA201904240005Target · out of adjustDISCREPANCY: RT GEAR RED LIGHT ILLUMINATED WITH GEAR LEVER IN UP POSITION AFTER TAKE OFF. RECYCLED GEAR RED LIGHT ILLUMINATED AGIAN. ADJUSTED THE SENSOR TARGET OF RIGHT MAIN LANDING GEAR UP LOCK SENSOR. PERFORMED OPS CHECK AND TEST IAW AMM 32-61-21, AMM 32-61Apr 22, 2019 · N802TJ · Boeing 737401 · Landing Gear Position and WarningSDR I5EA201904210004Line · rupturedDISCREPANCY: LOSS OF SYSTEM "A" HYDRAULIC FLUID DURING FLIGHT. CORRECTIVE ACTION: DURING WALK AROUND FOUND #1 BRAKE SUPPLY LINE WITH A LEAK. REMOVED AND REPLACED HYDRAULIC SUPPLY LINE AS PER B737 AMM 20-10-52. SERVICED SYS "A" PER B737 AMM 12-12-00. ACCOMPLISHApr 19, 2019 · N23987 · Boeing 737401 · Hydraulic System, MainSDR I5EA201903020000Fuel Control · inoperativeDISCREPANCY: AT TOP OF DESCENT, AUTO-THROTTLES MOVED THROTTLES TO IDLE, NR 1 ENGINE MADE "POP" NOISE AND SHUTDOWN. PRIOR TO TOP OF DESCENT, ENGINE INDICATIONS WERE NORMAL. PERFORMED ENGINE FAILURE QRH. WAS ABLE TO RESTART ENGINE AND PERFORM NORMAL LANDING. SUBMar 5, 2019 · N804TJ · Boeing 737401 · Fuel Control/Turbine EnginesSDR I5EA2019030100000Battery · dischargedDISCREPANCY: PASSENGER CABIN - DURING EMERGENCY LIGHT TEST, BATTERY ASSY DID NOT SUPPLY ENOUGH POWER. CORRECTIVE ACTION: REMOVED AND REPLACED 1 EACH BATTERY FOR EMERGENCY LIGHTS AND TEST PASSENGER CABIN LIGHTS IAW ALL 33-51-51 PG. 202 PREFORMED OPS CHECK GOMar 4, 2019 · N420US · Boeing 737401 · Emergency LightingSDR I5EA2019012803Wire · brokenEMERGENCY EXIT LIGHTS ON SEAT ROWS 14-22 INOP. TROUBLESHOT IAW WDM 33-57-42, FOUND BROKEN WIRE AT CONNECTOR D3686. REPAIRED BROKEN WIRE IAW SWPM 20-30-02, TEST GOOD IAW AMM 33-37-02.Jan 28, 2019 · N418US · Boeing 737401 · Light System WiringSDR I5EA2018102600011Unknown · malfunctionedDISCREPANCY: AIRCRAFT WILL NOT PRESSURIZE AUTO/STANDBY OR MANUAL CORRECTIVE ACTION: PERFORMED DETAILS VISUAL INSP OF CABIN OUTFLOW VALVE, PRESSURE CONTROLLER AND RACK CONNECTORS. VERIFIED AIR/GROUND LOGIC AND PERFORMED SATISFACTORY PRESSURIZATION OPS CHECKOct 24, 2018 · N804TJ · Boeing 737401 · Cabin Pressure Control SystemSDR I5EA2018090600000Torque Link · brokenDURING LANDING WHEN REVERSE WAS APPLIED THE AIRCRAFT STARTED SHAKING HARD. REMOVED AND REPLACED LT MLG UPPER TORSION LINK PIN, 69-72023-1, AND LOWER, P/N 65-67693-3, TORQUE LINK PER AMM 32-11-51.Sep 4, 2018 · N420US · Boeing 737401 · Main Landing Gear Strut/Axle/TruckSDR I5EA212N20180301Smoke Detector · failedAFTER TAKEOFF, CLIMBING THROUGH FL060, AFT CARGO FIRE WARNING ILLUMINATED WITH MASTER WARNING LIGHT. CHECKLIST COMPLIED WITH, BOTTLE DISCHARGED, LANDING ACCOMPLISHED. ACCOMPLISHED A VISUAL INSPECTION OF AFT CARGO COMPARTMENT, NO SMOKE OR FIRE DAMAGE FOUNDMar 22, 2018 · N420US · Boeing 737401 · Smoke DetectionSDR I5EA2018022001Fire Warning · false activationCLIMBING THROUGH FL 230, THE AFT CARGO FIRE ALARM WENT OFF, COMPLETED THE CARGO FIRE PROCEDURE IAW QRH, PEFORMED AIR TURNBACK TO DEPARTURE. PERFORMED CARGO FIRE SUPESSION SYSYTEM OPERATIONAL TEST IAW AMM SUPPLEMENTAL DOC. N-0009-01 AND AMM 29-19-00. SYSTFeb 11, 2018 · N420US · Boeing 737401 · Smoke DetectionSDR I5EA2018021500001Fire Warning · activatedCLIMBING THROUGH FL230, AFT CARGO FIRE ALARM WENT OFF, COMPLETED CARGO FIRE PROCEDURE PER QRH, RETURNED TO DEPARTURE AIRPORT.Feb 11, 2018 · N420US · Boeing 737401 · Fire DetectionSDR I5EA2017112100007Power Supply · inoperativeLEFT FUSELAGE AFT LOWER EMERGENCY LIGHT INOPERATIVE. REMOVED AND REPLACED POWER SUPPLY AT BS 753, OPERATIONAL CHECKED GOOD, IAW AMM 33-51-51Nov 20, 2017 · N418US · Boeing 737401 · Emergency EquipmentSDR I5EA2017102503Battery Pack · dischargedLT ROW 6 THROUGH 9 EMERGENCY LIGHTS INOPERATIVE. REMOVED AND REPLACED BATTERY PACK AT STA. 634L, OPERATION TEST GOOD IAW AMM 33-51-51.Oct 25, 2017 · N420US · Boeing 737401 · Emergency LightingSDR I5EA2017091902Frame · crackedFWD CARGO BAY STA 500E HAS CRACK INDICATION AT 1.04" HOLE BETWEEN STR 20R AND STR 21R. REPAIRED FRAME AT STA 500E BETWEEN STR 20R AND STR 21R IAW SRM, REPAIR 13.Sep 19, 2017 · N804TJ · Boeing 737401 · Fuselage Main, FrameSDR I5EA201709190001Battery Pack · inoperativeEMERGENCY LIGHTS INSIDE AND OUTSIDE OF CABIN ARE INOPERATIVE. REMOVED AND REPLACED BATTERY PACKS AT BS 753L AND 598R. OPERATIONAL CHECKED GOOD.Sep 17, 2017 · N804TJ · Boeing 737401 · Emergency LightingSDR I5EA2017082400001Battery Pack · dischargedSEAT MOUNTED AISLE LOCATOR LIGHTS INOPERATIVE ON RT SEAT ROWS 11 THROUGH 21. REPLACED THE BATTERY PACK.Aug 22, 2017 · N418US · Boeing 737401 · Emergency Lighting
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