# Service difficulty reports: N531AS

A list on [N531AS](https://openairdocs.org/aircraft/N531AS.md).

Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first.

Page 1 of 8 · 380 reports

- [SDR ASAA2026072968163](https://openairdocs.org/sdr/ASAA2026072968163.md): Shield · corroded · Jul 29, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT PIT SHIELD FWD OF DOOR HAS CORROSION. GROUNDED - YES. REMOVED AND REPLACED AFT PIT SHIELD FWD OF DOOR, IAW B737-800 SRM 51-40-02-0G-0, STEP: 4.B & 5.B. (W: 1" / O:.050" / R:.040 / L: 2" / D:.010").
- [SDR ASAA2026072268291](https://openairdocs.org/sdr/ASAA2026072268291.md): Support · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT WET AREA FLOOR SUPPORT HAS CORROSION BETWEEN STA 907-927 LBL 20. GROUNDED - YES. REPAIRED AFT WET AREA FLOOR SUPPORT BETWEEN STA 907-927 LBL 20 IAW EA 800-53EA-30625 W= 1.0" O=.076" R=.055" L= 1.0" D=.021.
- [SDR ASAA2026072268290](https://openairdocs.org/sdr/ASAA2026072268290.md): Floor Support · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT WET AREA FLOOR SUPPORT HAS CORROSION BETWEEN STA 907-927 LBL 30. GROUNDED - YES. REPAIRED AFT WET AREA FLOOR SUPPORT AT STA 907-927 LBL 30 IAW EA 800-53EA-30625 W= 1.0" O=.076" R=.060" L= 1.0" D=.016.
- [SDR ASAA2026072268161](https://openairdocs.org/sdr/ASAA2026072268161.md): Floor Support · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT WET AREA FLOOR SUPPORT STRUCTURE IS CORRODED BETWEEN STA 927-947 LBL 20. GROUNDED - YES. REMOVED AND REPLACED AFT WET AREA FLOOR SUPPORT STRUCTURE BETWEET STA 927-947 LBL 20, IAW B737-800 SRM 51-40-02-0G-0, STEPS: 4.B & 7.C. W= 2" O=.084" R=.058" L1" D=
- [SDR ASAA2026072267941](https://openairdocs.org/sdr/ASAA2026072267941.md): Floorbeam · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Main, Floor Beam
  > AFT WET AREA FLOOR BEAM 986 HAS CORROSION AT OTBD MOST HOLES, LT AND SIDE. GROUNDED - YES. REPAIRED AFT WET AREA FLOORBEAM IAW SRM 53-70-51-2R-6. W= 1" O=.150 R=.106 L= 1 1/2" D=.044.
- [SDR ASAA2026072267940](https://openairdocs.org/sdr/ASAA2026072267940.md): Floorbeam · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Main, Floor Beam
  > AFT WET AREA FLOORBEAM BS 986 HAD CORROSION AT OTBD MOST HOES, RT SIDE. GROUNDED - YES. REPAIRED THE FLOORBEAM IAW SRM 53-70-51-2R-6. W= 1" O=.150 R=.140 L= 1" D=.010.
- [SDR ASAA2026072267938](https://openairdocs.org/sdr/ASAA2026072267938.md): Floor Support · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT WET AREA FLOOR SUPPORT STRUCTURE IS CORRODED BETWEEN BS 947-967 LBL 20. GROUNDED - YES. REMOVED AND REPLACED AFT WET AREA FLOOR SUPPORT STRUCTURE BETWEEN BS 947-967 LBL 20 IAW B737-800 SRM 51-40-02-0G-0, STEP 7.B & C. W: 2" / O:.066" /R:.034" /L: 2" /
- [SDR ASAA2026072267936](https://openairdocs.org/sdr/ASAA2026072267936.md): Floor Support · corroded · Jul 22, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > FWD WET AREA FLOOR SUPPORT HAS CORROSION BETWEEN BS 294-312, BL 0. GROUNDED - YES. REMOVED DAMAGE FOUND TO BE OUT LIMITS, REMOVED AND REPLACED FWD WET AREA FLOOR SUPPORT BETWEEN BS 294-312 BL 0 IAW B737-800 SRM 51-40-02-0G-0 STEP 4. B & 7. W= 2" O=.170" R=.1
- [SDR ASAA2026071568167](https://openairdocs.org/sdr/ASAA2026071568167.md): Cargo Track · cracked · Jul 15, 2026 · N531AS · Boeing 737890 · Fuselage, Seat/Cargo Attach Fittings
  > AFT PIT RT SIDE CARGO TRACK AT 727I AND 727E IS CRACKED. GROUNDED - YES. REPAIRED AFT PIT RT CARGO TRACK AT STA 727E & 727I IAW SRM 53-00-53-2R-3.
- [SDR ASAA2026071568165](https://openairdocs.org/sdr/ASAA2026071568165.md): Rail · corroded · Jul 15, 2026 · N531AS · Boeing 737890 · Fuselage Main, Structure
  > FWD CARGO AFT RT LOWER BULKHEAD RAIL IS CORRODED. GROUNDED - YES. REMOVED & REPLACED FWD CARGO AFT RT LOWER BULKHEAD RAIL IAW SRM 51-40-02-0G-0 STEP 4.B
- [SDR ASAA2026071568164](https://openairdocs.org/sdr/ASAA2026071568164.md): Plate · corroded · Jul 15, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT PIT RT SIDEPLATE IS CORRODED BS 727-767. GROUNDED - YES. REMOVED AND REPLACED AFT PIT RT SIDEPLATE BS 727-767 IAW SRM 53-00-53-2R-5 STEP 4.
- [SDR ASAA2026071568162](https://openairdocs.org/sdr/ASAA2026071568162.md): Plate · corroded · Jul 15, 2026 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT PIT LT SIDEPLATE BS 727-784 IS CORRODED. GROUNDED - YES. INSTALLED NEW AFT PIT LT SIDEPLATE BS 727-784 IAW B737-800 SRM 53-00-53-2R-5 STEP 4.
- [SDR ASAA2026052666346](https://openairdocs.org/sdr/ASAA2026052666346.md): Power Supply · inoperative · May 26, 2026 · N531AS · Boeing 737890 · Emergency Lighting
  > WHILE PERFORMING T/C 782330088, FOUND EMRGENCY LIGHTS BATTERY PACK INOP (LH, 9 WINDOWS FWD OF FWD OVERWING EXIT, FOOT PANEL). GROUNDED - YES. REMOVED AND REPLACED POWER SUPPLY BATTERY PACK REF AMM 33-51-06, OPS CHECK GOOD 3 EA MIG-51A INSTALLED/REMOVED.
- [SDR ASAA2025103162029](https://openairdocs.org/sdr/ASAA2025103162029.md): Lens · missing · Oct 31, 2025 · N531AS · Boeing 737890 · Emergency Lighting
  > F/A REPORTS L2 DOOR EXIT SIGN COVER MISSING. GROUNDED - YES. INSTALLED NEW L2 DOOR EXIT SIGN COVER. REF 33-51-01.
- [SDR ASAA2025013056069](https://openairdocs.org/sdr/ASAA2025013056069.md): Web · corroded · Jan 30, 2025 · N531AS · Boeing 737890 · Fuselage Miscellaneous Structure
  > AFT PIT LOWER DOOR SILL WEB HAS AREAS OF CORROSION. GROUNDED - YES. REMOVED AND REPLACED AFT PIT LOWER DOOR SILL WEB IAW B737-800 SRM 51-40-02-05-0W= 1" O=.050" R=.041 L= 9" D=.009".
- [SDR ASAA2025010655130](https://openairdocs.org/sdr/ASAA2025010655130.md): Sign · detached · Jan 6, 2025 · N531AS · Boeing 737890 · Emergency Lighting
  > AFT GALLEY OVERHEAD EMERGENCY EXIT SIGN ASSEMBLY DETATCHED FROM CEILING PANEL. GROUNDED - YES. (RESOLVED ON W/O: 2033960 TASKCARD: N/R-00002) AFT GALLEY OVERHEAD EMERGENCY EXIT SIGN LIGHT ASSY REMOVED AND REPLACED OPS CHECK GOOD, REF AMM 33-51-01/ CMM 33-24-0
- [SDR ASAA2024091953047](https://openairdocs.org/sdr/ASAA2024091953047.md): Skin Lap · corroded · Sep 19, 2024 · N531AS · Boeing 737890 · Fuselage Main, Plate/Skin
  > L/H LWR LAP SEAM SEC 48 AT STA 1040 TO STA 1048 HAS SIGNS OF CORROSION GROUNDED - YES. ACCOMPLISHED CATEGORY A MINOR REPAIR ON SKIN PANEL P/N: 148A3321-13 IAW EA 800-53EA-27653 REV 00
- [SDR ASAA2024091953046](https://openairdocs.org/sdr/ASAA2024091953046.md): Skin · corroded · Sep 19, 2024 · N531AS · Boeing 737890 · Fuselage Main, Plate/Skin
  > AREA AROUND WATER SERVICE DOOR AT STR 25R TO STR 27R HAS SIGNS OF CORROSION. GROUNDED - YES. ACCOMPLISHED CATEGORY A MINOR REPAIR ON SKIN PANEL P/N 147A3400-4 IAW EA 800-53EA-27659 REV 00
- [SDR ASAA2024081651917](https://openairdocs.org/sdr/ASAA2024081651917.md): Light · malfunctioned · Aug 16, 2024 · N531AS · Boeing 737890 · Emergency Lighting
  > FLIGHT ATTENDANTS REPORT EMERGENCY EXIT LIGHT SWITCH ON AFT FA PANEL IS GUARDED DOWN BUT THE LIGHT IS ILLUMINATED. NO ACTUAL EMERGENCY LIGHTS ARE LIT AND THE COCKPIT SWITCH IS IN THE GUARDED 'ARMED' POSITION. GROUNDED - YES. CYCLED POWER TO SYSTEM, EMERGENCY L
- [SDR ASAA2024071350994](https://openairdocs.org/sdr/ASAA2024071350994.md): Door · binding · Jul 13, 2024 · N531AS · Boeing 737890 · Service Doors
  > AIRCRAFT RIGHT AFT SERVICE DOOR IS JAMMED. CANNOT BE OPENED FROM INSIDE "OR" FROM THE OUTSIDE. GROUNDED - YES. OPENED & CLOSED R-2 DOOR OPS CK IS GOOD REF AMM 52-41-00.
- [SDR ASAA2024042849328](https://openairdocs.org/sdr/ASAA2024042849328.md): Battery Pack · discharged · Apr 28, 2024 · N531AS · Boeing 737890 · Emergency Lighting
  > L/H FWD EMERGENCY LIGHT INOP. GROUNDED - YES. REPLACED EMERGENCY LIGHT POWER SUPPLY BATTERY PACK REF BOEING AMM TASK 33-51-06-960-805. ASSY M1675 AND M1694. OP TEST GOOD. NO FURTHER DEFECTS.
- [SDR ASAA2024020647746](https://openairdocs.org/sdr/ASAA2024020647746.md): Track · lack of lube · Feb 6, 2024 · N531AS · Boeing 737890 · Passenger/Crew Doors
  > FA REPORTS L1 DOOR DIFFICULT TO OPEN AND CLOSE. GROUNDED - YES. LUBRICATED L1 DOOR TRACK AND DOOR HANDLE REF. AMM 52-11-00. OPS CHK NORMAL.
- [SDR ASAA2023102345794](https://openairdocs.org/sdr/ASAA2023102345794.md): Unknown · unknown · Oct 23, 2023 · N531AS · Boeing 737890 · Flight Management Computing Hardware System
  > RIGHT 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.
- [SDR ASAA2023092145389](https://openairdocs.org/sdr/ASAA2023092145389.md): Filter · leaking · Sep 21, 2023 · N531AS · Boeing 737890 · AC Generator-Alternator
  > TECH SERVICES FOLLOW UP REQUEST FOR FREQUENT #2 IDG SERVICING(#PRI2/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1970015 TASKCARD: N/R-00001) COULD NOT PERFORM STATIC LEAK CHECK DUE TO THE AMOUNT OF OIL RESIDUE IN MULTIPLE LOCATIONS. CLEANED EXTERNAL PORTION OF
- [SDR ASAA2023092145356](https://openairdocs.org/sdr/ASAA2023092145356.md): Idg · leaking · Sep 21, 2023 · N531AS · Boeing 737890 · AC Generator-Alternator
  > TECH SERVICES FOLLOW UP REQUEST FOR FREQUENT #1 IDG SERVICING(#PRI2/ETOPS). GROUNDED - YES. (RESOLVED ON W/O: 1970975 TASKCARD: N/R-00001) WHILE ACCOMPLISHING TSR715005 FOUND A LARGE AMOUNT OF OIL AROUND THE QUAD RING. REMOVED AND REPLACED #1 ENG IDG REF AMM
- [SDR ASAA2023090945050](https://openairdocs.org/sdr/ASAA2023090945050.md): Unknown · unknown · Sep 9, 2023 · N531AS · Boeing 737890 · Cabin Temperature Control System
  > CAB ZONE TEMP LIGHT FAULTS DURING RECALL. EXTINGUISHES UPON MASTER CAUTION RESET. GROUNDED - YES. (RESOLVED ON W/O: 1967571 TASKCARD: N/R-00002) ACCOMPLISHED FIM 21-62 TASK 903, 801 & 833. PZTC 2 M1443 HAD "FLT DECK TRIM VALVE" FAULT FOR LAST FLIGHT LEG DURIN
- [SDR ASAA2023090945011](https://openairdocs.org/sdr/ASAA2023090945011.md): Unknown · unknown · Sep 9, 2023 · N531AS · Boeing 737890 · Air Conditioning System
  > CONT CAB ZONE TEMP LIGHT ON. GROUNDED - YES. APPLIED APU AIR TO SYSTEM AND EXERCISED TRIM AIR VALVE. OPS CK NORMAL PER AMM 21-61-00 NO HISTORY LAST 30 DAYS. SEAMC NOTIFIED.
- [SDR ASAA2023083144879](https://openairdocs.org/sdr/ASAA2023083144879.md): Unknown · unknown · Aug 31, 2023 · N531AS · Boeing 737890 · Engine Starting System
  > DURING DRY MOTOR RUN FOUND #2 ENGINE STARTER OIL LEAK AT STARTER CLAMP. GROUNDED - YES. INSPECTED QADTER CLAMPPER AMM 80-11-01NO CRACKS NOTED.FOUND STARTER CLAMP TO BE LOOSE.RE-TORQUE CLAMP PER AMM 80-11-01-400-801-F006.(E)DRY MOTORS AND LEAK CHECK FOUND OKAY.
- [SDR ASAA2023080944522](https://openairdocs.org/sdr/ASAA2023080944522.md): Bleed Valve · leaking · Aug 9, 2023 · N531AS · Boeing 737890 · Compressor Bleed Valve
  > INFLIGHT DUCT PRESSURE DIFFERENTIAL EXCEEDED 20 PSI AT 8000FT LEFT - 40PSI RIGHT - 65PSIAT 17000FT AND APPROX 10 MINS INFLIGHT LEFT - 45PSI RIGHT - 55PSIAT 34000FT AND APRROX 25 MINS - 30 MINS INFLIGHT LEFT - 45PSI RIGHT - 45PSIAT 34000FT AND 3.30 HRS OF FLIGH
- [SDR ASAA2023080244380](https://openairdocs.org/sdr/ASAA2023080244380.md): Unknown · unknown · Aug 2, 2023 · N531AS · Boeing 737890 · Autopilot System
  > UNSAT AUTOLAND. APP WARN APPX 50' 34L APPROACH. GROUNDED - YES. FFR SHOWD NO FAULTS LAST FLIGHT, DFCS CHA AND CH B. HGS LOGGED "RALT 1" FAULTS AND "RALT COMP" FAULTS LAST FLIGHT LEG. HGS SYSTEM TEST AND HGS SENSOR DATA TEST FOR RAD ALT NML, REF SMM 34-36-00. L
- [SDR ASAA2023072744276](https://openairdocs.org/sdr/ASAA2023072744276.md): Unknown · unknown · Jul 27, 2023 · N531AS · Boeing 737890 · Autopilot System
  > APPCH WARN AT 100'AGL.DISCONNECTED A/PAND LANDED.AULTOLAN/HGS.ILS WAS CLEARAPPCH WAR. WIND VAR @3 34L SEA. GROUNDED - YES. T/S AND FOUND ILS ANOMALY LOGGED IN HISTORY. ACCOMPLISHED ALL LIBRARY TESTS DFCS IAW AMM 22-11-00-740-806 & HGS IAW 34-36-00 RTS PASSED.
- [SDR ASAA2023072244153](https://openairdocs.org/sdr/ASAA2023072244153.md): Unknown · unknown · Jul 22, 2023 · N531AS · Boeing 737890 · Cabin Cooling System
  > ON MASTER CAUTION RECALL THE LEFT PACK LIGHT ILLUMINATED AND DISTINGUISHED WHEN MASTER CAUTION PUSH TO RESET WAS PUSHED. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023072044253](https://openairdocs.org/sdr/ASAA2023072044253.md): Coupling · leaking · Jul 20, 2023 · N531AS · Boeing 737890 · Standard Practices/Structures
  > MAINTENANCE/TECH SERVICES REQUEST: FOLLOW-UP TO #1 ENGINE IDG FREQUENT SERVICING----(#PRI2/ETOPS)-----. GROUNDED - YES. (RESOLVED ON W/O: 1962582 TASKCARD: N/R-00002) FOUND #1 ENG. SERVICE FITTING LEAKING. REMOVED AND REPLACED PER. AMM 24-11-00-700-804. LEAK
- [SDR ASAA2023061533562](https://openairdocs.org/sdr/ASAA2023061533562.md): Unknown · unknown · Jun 13, 2023 · N531AS · Boeing 737890 · Navigation System
  > AT CRUISE FO HAD VTRK DISPLAYED ON ND DISPLAY AND AUTOPILOT REVERTED TO CWS ROLL MODE. VTRK WENT AWAY AND OPS WENT BACK TO NORMAL. GROUNDED - YES. VERIFIED FMC+DFCS FAULTS FOR FMC DATA INVALID AND PRES POS LAT RATE. NO OTHER OCCURRENCES PREVIOUS FLT LEGS. DFCS
- [SDR ASAA2023061243578](https://openairdocs.org/sdr/ASAA2023061243578.md): Motor · faulty · Jun 12, 2023 · N531AS · Boeing 737890 · Fuel Boost Pump
  > #2 FWD FUEL PUMP LOW PRESSURE LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED #2 FWD BOOST PUMP IMPELLER IAW B737-800 AMM 28-22-41.
- [SDR ASAA2023061143545](https://openairdocs.org/sdr/ASAA2023061143545.md): Unknown · unknown · Jun 11, 2023 · N531AS · Boeing 737890 · Windshield/Door Rain/Ice Removal
  > WINDOW HEAT OVERHEAT LIGHT ILLUMINATED DURING CLIMB. GROUNDED - YES. LIGHT STAYS EXTINGUISHED AFTER QRH PROCEDURE.
- [SDR ASAA2023061143543](https://openairdocs.org/sdr/ASAA2023061143543.md): Unknown · unknown · Jun 11, 2023 · N531AS · Boeing 737890 · Cabin Cooling System
  > LH PACK LIGHT ON AFTER PUSHING RECALL, GOES OUT AFTER PUSHING MASTER CAUTION. GROUNDED - YES. PERFORMED B737-800 FIM 21-53 TASK 821 FOR LH PACK FOUND "THIS PACK - TCV" FAULT. PERFORMED FIM 21-62 TASK 830 FOR TCV FAULT. NO DEFECTS NOTED AT THIS TIME.
- [SDR ASAA2023052543382](https://openairdocs.org/sdr/ASAA2023052543382.md): Sensor · faulty · May 25, 2023 · N531AS · Boeing 737890 · Pneumatic Distribution System
  > L/H DUCT PRESSURE INDICATION READS A MAXIMUM OF 30 PSI AT 80% N1, #1 ENGINE. (FOR REFERENCE #2 ENGINE R/H DUCT PRESSURE 47 PSI AT 80% N1)NOTE: ISOLATION VALVE CLOSED, APU BLEED OFF. L/H DUCT PRESSURE INDICATION DECAYS TO @ 30 PSI WHEN #1 ENGINE N1 SPEED IS 60%
- [SDR ASAA2023052443360](https://openairdocs.org/sdr/ASAA2023052443360.md): Engine · damaged · May 24, 2023 · N531AS · Boeing 737890 · Engine (Turbine/Turboprop)
  > WHILE ACCOMPLISHING ASA SBCFM56-7B-72-1074-1. FOUND ON STAGE 3 SLAB PIN AT THE 9 O'CLOCK POSITION LIBERATED. CAUSING DAMAGE TO THE J-HOOK AND SPOOL. REQUIRES ENGINE CHANGE ON #1 ENG S/N 804245. GROUNDED - YES. REMOVED ENGINE S/N 804245. REFERENCE ASA SHOP W/O
- [SDR ASAA2023051043205](https://openairdocs.org/sdr/ASAA2023051043205.md): Motor · faulty · May 10, 2023 · N531AS · Boeing 737890 · Fuel Boost Pump
  > ON DESCENT PASSING THROUGH FL200 LEFT AFT FUEL PUMP LOW PRESSURE LIGHT ILLUMINATED CONTINUOUSLY. LEFT MAIN TANK CONTAINED APPROX 4.9K LBS OF FUEL. GROUNDED - YES. REMOVED AND REPLACED LEFT AFT FUEL PUMP, OPS CHECK GOOD IAW B737-800 AMM 28-22-41.
- [SDR ASAA2023042943040](https://openairdocs.org/sdr/ASAA2023042943040.md): Modulating Valve · faulty · Apr 29, 2023 · N531AS · Boeing 737890 · Cabin Temperature Control System
  > "ZONE TEMP" AMBER ANNUNCIATOR ON OVERHEAD PANEL CONT CAB. EXTINGUISHES ON M.C RESET. GROUNDED - YES. R/R ZONE TRIM AIR MODULATING VALVE (V00143) IAW B737-800 AMM 21-61-21-400-801.
- [SDR ASAA2023041242820](https://openairdocs.org/sdr/ASAA2023041242820.md): Lens · broken · Apr 12, 2023 · N531AS · Boeing 737890 · Emergency Lighting
  > EMERGENCY EXIT LIGHT LENS COVER, FLOOR LEVEL BY L1 DOOR BROKEN. GROUNDED - YES. INSTALLED NEW LENS COVER ON EMERGENCY EXIT LIGHT BY L1 DOOR AT FLOOR LEVEL.
- [SDR ASAA2023041042812](https://openairdocs.org/sdr/ASAA2023041042812.md): Unknown · unknown · Apr 10, 2023 · N531AS · Boeing 737890 · Detection System
  > A OVERHEAT/DETECTION FIRE LOOPS DOES NOT WORK. GROUNDED - YES. UNCAPPED /STOWED MW0325 A1 CORE SENSOR WIRE @ M1759 RETERMINATED WIRE REF B737-800 SWPM 20-30-11. MOVED #1 ENG FIRE DETECT SW TO CENTER AND TESTED GOOD REF B737-800 AMM 26-11-00-710-801. (REF ASA L
- [SDR ASAA2023040142679](https://openairdocs.org/sdr/ASAA2023040142679.md): Exciter · inoperative · Apr 1, 2023 · N531AS · Boeing 737890 · Ignition Harness (Distribution)
  > NO LIGHT OFF DURING #1 ENGINE START ATTEMPT ON RIGHT IGNITION. GROUNDED - YES. REMOVED AND REPLACED #1 ENGINE L/H + R/H IGNITER PLUGS W/ NEW. REMOVED AND REPLACED R/H #1 ENGINE IGNITION EXCITER W/ SERVICEABLE. REF B737-800 AMM 74-00-00, 74-11-01, 74-21-02.
- [SDR ASAA2023032942629](https://openairdocs.org/sdr/ASAA2023032942629.md): Control Panel · faulty · Mar 29, 2023 · N531AS · Boeing 737890 · Autopilot System
  > MODE CTRL PANEL GOES DIM AFTER A WHILE HAS HISTORY. RESETS ACCOMPLISHED. GROUNDED - YES. REPLACED MCP REF B737-800 AMM TASK 22-1134-000-801.
- [SDR ASAA2023032242637](https://openairdocs.org/sdr/ASAA2023032242637.md): Diffuser · unknown · Mar 22, 2023 · N531AS · Boeing 737890 · Cabin Cooling System
  > REF ASA TSR 714008 ON STEP 3, FOUND FAN BYPASS CHECK VALVE WAS MISSING REF B737-800 AMM 21-51-03. ON RH PACK. GROUNDED - YES. REMOVED AND REPLACED PRIMARY HEAT EXCHANGER PLENUM AND DIFFUSER REF B737-800 AMM 21-51-03-400-804, OPS AND LEAK CHECK GOOD.
- [SDR ASAA2023032142561](https://openairdocs.org/sdr/ASAA2023032142561.md): Unknown · unknown · Mar 21, 2023 · N531AS · Boeing 737890 · Detection System
  > FAULT LIGHT ILLUMINATES AND #1 FIRE HANDLE DOES NOT ILLUMINATED WHEN TESTING FIRE OVERHEAT. GROUNDED - YES. REPAIRED TERMINAL LUG AT #1 ENG #3 DETECTOR REF B737-800 AMM 26-11-02-960-802. FIRE DETECTION/ ETOPS GROUND VERIFICATION PASS.
- [SDR ASAA2023032042429](https://openairdocs.org/sdr/ASAA2023032042429.md): Unknown · unknown · Mar 20, 2023 · N531AS · Boeing 737890 · Autopilot System
  > MODE CONTROL DIGITAL BACKLIGHT NOT WORKING AS WELL AS F/O COURSE NOT WORKING. GROUNDED - YES. RESET MCP PER B737-800 AMM 22-11-34. BACKLIGHT BACK TO NORMAL. OPS CHECK OK.
- [SDR ASAA2023031942407](https://openairdocs.org/sdr/ASAA2023031942407.md): Tat Probe · inoperative · Mar 19, 2023 · N531AS · Boeing 737890 · Pitot/Static Anti-Ice System
  > THE "A" SIDE TEMP PROBE AMBER LIGHT ILLUMINATED IN FLIGHT. GROUNDED - YES. DIVERSION - FOUND TAT PROBE HEAT INOP. REMOVED AND REPLACED TAT PROBE PER B737-800 AMM 34-21-06-000-801 & AMM 34-21-06-400-801. TAT PROBE SYSTEM OP TEST GOOD.
- [SDR ASAA2023031842402](https://openairdocs.org/sdr/ASAA2023031842402.md): Unknown · unknown · Mar 18, 2023 · N531AS · Boeing 737890 · Autopilot System
  > MCP DIMMER INOP. F/O COURSE LOCKED ON 880. A/P P/RST ILLUMINATED BOTH SIDES. GROUNDED - YES. RESET MODE CONTROL PANEL PER B737-800 AMM 22-11-34. MODE CONTROL PANEL OPS CHECK GOOD PER AMM 22-11-34.

Next page: https://openairdocs.org/aircraft/N531AS/reports.md?page=2

## The whole list in SQL

Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS:

```sql
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 = 'N531AS' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N531AS/reports

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