# Service difficulty reports: N479AS

A list on [N479AS](https://openairdocs.org/aircraft/N479AS.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 4 · 195 reports

- [SDR ASAA2026050365850](https://openairdocs.org/sdr/ASAA2026050365850.md): Door · no discrepancy · May 3, 2026 · N479AS · Boeing 737990ER · Passenger/Crew Doors
  > FLEET REPORTS L1 DOOR HARD TO CLOSE. GROUNDED - YES. PERFORMED FORWARD ENTRY DOOR SYSTEM TEST REF AMM 52-11-00. INTERIOR HANDLE TORQUE WITHIN LIMITS. OPS CHECK NORMAL.
- [SDR ASAA2026021064254](https://openairdocs.org/sdr/ASAA2026021064254.md): Battery Pack · no test · Feb 10, 2026 · N479AS · Boeing 737990ER · Emergency Lighting
  > WHILE WORKING T/C 78233001, FOUND FLIGHT DECK DOME EMERGENCY LIGHT INOPERATIVE, EMERGENCY EXIT SIGN AT 16ABC WITH INOPERATIVE LAMPS, & M1672 EMERGENCY EXIT LIGHT BATTERY PACK FAILED A CAPACITANCE CHECK. GROUNDED - YES. REPLACED SECONDARY LAMP OF DOME LIGHT A
- [SDR ASAA2025020355754](https://openairdocs.org/sdr/ASAA2025020355754.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYTEM BATTERY PACK M1672 INOP. GROUNDED - YES. REMOVED AND REPLACED AND OP CK GOOD BATTERY PACK M1672 S/N 124697 IAW ASA B737-900 AMM 33-51-06-960-806.
- [SDR ASAA2025020355753](https://openairdocs.org/sdr/ASAA2025020355753.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYSTEM BATTERY PACK M1671 INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT SYSTEM BATTERY PACK M1671 S/N 124311 IAW B737-900 AMM 33-51-06-960-806. OPS CK GOOD.
- [SDR ASAA2025020355752](https://openairdocs.org/sdr/ASAA2025020355752.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYSTEM BATTERY PACK M2626 INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT SYSTEM BATTERY PACK M2626 S/N 124409 IAW B737-900 AMM 33-51-06-960-806. OPS CK GOOD.
- [SDR ASAA2025020355751](https://openairdocs.org/sdr/ASAA2025020355751.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYSTEM BATTERY PACK M2335 INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT SYSTEM BATTERY PACK M2335 S/N 124366 IAW B737-900 AMM 33-51-06-960-806. OPS CK GOOD.
- [SDR ASAA2025020355750](https://openairdocs.org/sdr/ASAA2025020355750.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYSTEM BATTERY PACK M1676 INOP. GROUNDED - YES. REMOVED, REPLACED AND OP CK GOOD EMERGENCY LIGHT BATTERY PACK M1676 S/N 124631 IAW ASA B737-900 AMM 33-51-06-960-806.
- [SDR ASAA2025020355749](https://openairdocs.org/sdr/ASAA2025020355749.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYSTEM BATTERY PACK M1695 INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT SYSTEM BATTERY PACK M1695 S/N 124234 IAW B737-900 AMM 33-51-06-960-806. OPS CK GOOD.
- [SDR ASAA2025020355748](https://openairdocs.org/sdr/ASAA2025020355748.md): Battery Pack · inoperative · Feb 3, 2025 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHT SYSTEM BATTERY PACK M1670 INOP. GROUNDED - YES. REMOVED AND REPLACED EMERGENCY LIGHT SYSTEM BATTERY PACK M1670 S/N 124272 IAW B737-900 AMM 33-51-06-960-806. OPS CHECK GOOD.
- [SDR ASAA2025010955443](https://openairdocs.org/sdr/ASAA2025010955443.md): Transition Panel · corroded · Jan 9, 2025 · N479AS · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FWD PIT R/H TRANSITION PANEL HAS CORROSION FROM STA 500F TO 500L. GROUNDED - YES. REMOVED CORROSION FROM FWD PIT TRANSTION PANEL FROM STA 500F-STA 500L IAW B737-900 SRM 53-00-53-1A-2. ORIGINAL THICKNESS IS 0.040 IAW B737-900 SRM 53-30-53-0I-2. REMOVED 0.040, 0
- [SDR ASAA2025010955442](https://openairdocs.org/sdr/ASAA2025010955442.md): Transition Panel · corroded · Jan 9, 2025 · N479AS · Boeing 737990ER · Fuselage Miscellaneous Structure
  > FWD PIT R/H TRANSITION PANEL HAS CORROSION FROM STA 500A TO 500F. GROUNDED - YES. REMOVED CORR. FROM FWD PIT R/H TRANS. PNL FROM STA.500A TO 500F ORIG. THICKNESS.040 IAW B737-900 SRM 53-30-53. MAT. LOSSED.018 REMAINING THICKNESS.022 FOUND TO BE OUT OF LIMIT
- [SDR ASAA2025010255298](https://openairdocs.org/sdr/ASAA2025010255298.md): Web · corroded · Jan 2, 2025 · N479AS · Boeing 737990ER · Fuselage Miscellaneous Structure
  > AFT CARGO DOOR THRESHOLD CORRODED. GROUNDED - YES. REMOVED DAMAGE IAW B737-900ER SRM 53-60-15-1A-1, REMOVED.013 OF ALLOWABLE.010 REMAINING.027 THICK FOUND TO BE OUT OF LIMITS IAW SRM 53-60-15-1A-1 FIGURE 103 DETAILS D-D, REMOVED AFT CARGO DOOR SURROUND IAW
- [SDR ASAA2024092952846](https://openairdocs.org/sdr/ASAA2024092952846.md): Light · no discrepancy · Sep 29, 2024 · N479AS · Boeing 737990ER · Emergency Lighting
  > DURING FLIGHT, 17A EMERGENCY EXIT LIGHTS FLICKERING. GROUNDED - YES. OPERATED EMERGENCY EXIT LIGHTS AND CABIN LIGHTING THROUGH MULTIPLE CYCLES/SCENES OBSERVING NORMAL OPERATION. CONFIRMED ALL LED ELEMENTS OF EXIT LIGHTS OPERABLE. NO FLICKERING OBSERVED. REF AM
- [SDR ASAA2024041549065](https://openairdocs.org/sdr/ASAA2024041549065.md): Battery Pack · discharged · Apr 15, 2024 · N479AS · Boeing 737990ER · Emergency Lighting
  > WHILE PERFORMING TASK CARD 78233008, FOUND EMERGENCY LIGHT OUT AT R1 DOOR. GROUNDED - YES. VERIFIED EMERGENCY LTS INTERIOR + EXTERIOR OF R1 DOOR INOP. REMOVED AND REPLACED BATT PACK AT EMERMGENCY LT M2816 IAW AMM 33-51-06-960-805. NEW BATT PACK CHECKS GOOD. PA
- [SDR ASAA2023091045001](https://openairdocs.org/sdr/ASAA2023091045001.md): Unknown · unknown · Sep 10, 2023 · N479AS · Boeing 737990ER · Engine Cranking
  > STARTING THE #1 ENGINE THERE WAS A SLOW N2 INCREASE AND AFTER RAISING START LEVEL THE EGT INCREASED TO APPROXIMATELY 250-275 THEN STAGNATED AT 300 EGT AND STARTED TO FLASH. ABORTED THE START AND RAN QRH ABORTED START PROCEDURE. NORMAL START ON SECOND ATTEMPT E
- [SDR ASAA2023090644961](https://openairdocs.org/sdr/ASAA2023090644961.md): Unknown · unknown · Sep 6, 2023 · N479AS · Boeing 737990ER · Communications System
  > SAT LOG SHOWS FAIL FOR SAT #2. GROUNDED - YES. RESET SATCOM. PERFORMED FIM 23-15/801. SAT-2 NOW SHOWS READY. OK FOR SERVICED.
- [SDR ASAA2023083044851](https://openairdocs.org/sdr/ASAA2023083044851.md): Unknown · unknown · Aug 30, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > SINGLE FMC OPERATION. GROUNDED - YES. VERIFIED - PERFORMED FIM 34-61 TASK 836CYCLED 2 EA C/B'S - INITIAL EVALUATION NOW GOODNO HISTORY LAST 45 DAYS.
- [SDR ASAA2023081844692](https://openairdocs.org/sdr/ASAA2023081844692.md): Unknown · unknown · Aug 18, 2023 · N479AS · Boeing 737990ER · Engine Controls
  > WHILE ACCOMPLISHING T/C # 78273000 #1 ENGINE DISPLAYED LONG TIME FAULT MSG NBR: 76-21361. "THE START LEVER SIGNALS DISAGREE.". GROUNDED - YES. TROUBLESHOT PER FIM 76-11-TASK801. PERFORMED #1 ENG BITE TEST PER AMM 71-00-00. NO FAULTS ACTIVE OR PER LAST 10 RECOR
- [SDR ASAA2023081844691](https://openairdocs.org/sdr/ASAA2023081844691.md): Unknown · unknown · Aug 18, 2023 · N479AS · Boeing 737990ER · Engine Fuel and Control
  > REFERENCE LP #60639119, #1 ENGINE LONG TIME FAULT MESSAGE NUMBER 76-21361 "THE START LEVER SIGNALS DISAGREE." RE-CHECK REQUIRED PER TC # 78273000. GROUNDED - YES. NO ACTIVE FAULTS IN LAST 10 RECORDED LEGS. EEC BITE PASS PER AMM 71-00-00. THIS CLEARS PLT DEFERR
- [SDR ASAA2023081644697](https://openairdocs.org/sdr/ASAA2023081644697.md): Unknown · unknown · Aug 16, 2023 · N479AS · Boeing 737990ER · Independent Position Determining System
  > ON TAXI -OUT PWS FAIL ILLUMINATED ON CA SIDE ND. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023080644460](https://openairdocs.org/sdr/ASAA2023080644460.md): Fmc · faulty · Aug 6, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > ON T/O L FMC SEQENCED TO NEXT WAY POINT ON DEPARTURE. GROUNDED - YES. (RESOLVED ON W/O: 1964758 TASKCARD: N/R-00002) THE MEL IS ACTUALLY 34-36J, REMOVED AND REPLACED LH FMC COMPUTER IAW AMM 34-61-02-000-801 AND 34-61-02-400-801, ETOPS GROUND FUNCTIONAL OPS CH
- [SDR ASAA2023080644461](https://openairdocs.org/sdr/ASAA2023080644461.md): Unknown · unknown · Aug 6, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > CAPT FMC FAIL, COMPLIED WITH QRH, DID NOT RESOLVE FAILURE. GROUNDED - YES. ACCOMP FIM TASK 34-61 #836 SYS RESTORED. OPS CKS NML PER 34-61-00, GND VERIFICATION SUCCESSFUL. SEAMC FELIX NOTIFIED.
- [SDR ASAA2023080144371](https://openairdocs.org/sdr/ASAA2023080144371.md): Unknown · unknown · Aug 1, 2023 · N479AS · Boeing 737990ER · Cabin Cooling System
  > R. PACK LIGHT ILLUMINATED ON RECALL AT TOP OF DESCENT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023072544258](https://openairdocs.org/sdr/ASAA2023072544258.md): Unknown · unknown · Jul 25, 2023 · N479AS · Boeing 737990ER · Wind Shear Detection System
  > PREDICTIVE WINDSHEAR FAILED ON TAKE OFF. GROUNDED - YES. PERFORMED EGPWS COMP BITE. NO FAULTS. REF 34-46-00.PERFORME RADAR TEST REF 34-43-00. SYS OPS NML.
- [SDR ASAA2023071043962](https://openairdocs.org/sdr/ASAA2023071043962.md): Unknown · unknown · Jul 10, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > FO SIDE FMC RESET IN FLIGHT SHORTLY AFTER TOP OF DESCENT. GROUNDED - YES. PERFORMED FMCS BITE PROCEDURE FOUND INFLIGHT 1 FAULT FMC-R RATE I (INTERMITENT VERIFIED SENSORS NO FAULTS FOUND. RESET SYTEM FMCS PERFORMED GOOD BITE PROCEDURE AS PER FIM 34-61 TASK 801.
- [SDR ASAA2023070243887](https://openairdocs.org/sdr/ASAA2023070243887.md): Unknown · unknown · Jul 2, 2023 · N479AS · Boeing 737990ER · Weather Radar System
  > PWS FAIL. GROUNDED - YES. PER FIM 34-43 TASK 815 PERFORMED WEATHER RADAR SYSTEM BITE, OPS CHECK GOOD NO FAULTS FOUND REF MM 33-43 TASK 801 PER FIM INTERMITTENT FAULT. NO 30 DAY HISTORY.
- [SDR ASAA2023062243673](https://openairdocs.org/sdr/ASAA2023062243673.md): Unknown · unknown · Jun 22, 2023 · N479AS · Boeing 737990ER · Auto Flight System
  > RELEASED PER MEL 22-18J A/T ARM LIGHT INOP. GROUNDED - YES. PERFORMED A/T OPS TEST. TEST NORMAL, LIGHT FULL BRIGHT AND GREEN. BITE TEST NORMAL AMM 22-31-00-210-801. THIS CLEARS MEL 22-18J.
- [SDR ASAA2023061243555](https://openairdocs.org/sdr/ASAA2023061243555.md): Control Panel · degraded · Jun 12, 2023 · N479AS · Boeing 737990ER · Autopilot System
  > IN IAS/MACH WINDOW ON MCP A SMALL HORIZONTAL LINE IS OBSCURING THE FIRST DIGIT OF SPEED DISPLAY. GROUNDED - YES. REMOVED & REPLACED MCP REF B737-900 AMM 22-11-34.
- [SDR ASAA2023052843384](https://openairdocs.org/sdr/ASAA2023052843384.md): Unknown · unknown · May 28, 2023 · N479AS · Boeing 737990ER · Navigation System
  > YELLOW "PWS FAIL" DISPLAYED ON BOTH MFDS DURING TAKEOFF AND INITIAL CLIMB. GROUNDED - YES. ACCCOMPLISHED B737-900 FIM 34-43 TASK 815 NO FAULTS FOUND WEATHER RADAR OPS TEST PASSED, PER FIM THERE WAS AN INTERMITTENT FAULT. NO 30 DAY HISTORY.
- [SDR ASAA2023051543236](https://openairdocs.org/sdr/ASAA2023051543236.md): Battery Pack · inoperative · May 15, 2023 · N479AS · Boeing 737990ER · Emergency Lighting
  > EMERGENCY LIGHTS AROUND L1 DOOR ARE INOP. GROUNDED - YES. REMOVED, REPLACED AND OP TEST IS GOOD OF EMERGENCY LIGHT L1 DOOR POWER SUPPLY IAW B737-900 AMM 33-51-06-960-806.
- [SDR ASAA2023051143395](https://openairdocs.org/sdr/ASAA2023051143395.md): Unknown · unknown · May 11, 2023 · N479AS · Boeing 737990ER · Engine Controls
  > WHILE ACCOMPLISHING ASA TASK CARD #78273000 #1 ENG DISPLAYED LONG TIME FAULT MSG# 76-21361. THE START LEVER SIGNALS DISAGREE. GROUNDED - YES. PERFORMED EEC BITE TEST - RECENT FAULT IAW B737-900 AMM 73-21-00. NO FAULT FOUND. OK FOR SVC. NO DEFECTS NOTED AT THIS
- [SDR ASAA2023051043225](https://openairdocs.org/sdr/ASAA2023051043225.md): Tire · burst · May 10, 2023 · N479AS · Boeing 737990ER · Tire
  > EXCESSIVE NOSE WHEEL SHIMMY ON LANDING WHILE TAXING INTO GATE, ANOTHER CREW ADDRESSED INBOUND TIRE ON A/C RIGHT WAS SHREDDED. GROUNDED - YES. FOUND MAIN LANDING GEAR TIRE #3 WITH TREAD LOSS/BURST WHICH CAUSED VIBRATION. C/W CONDITIONAL INSPECTION PER B737-900
- [SDR ASAA2023043043065](https://openairdocs.org/sdr/ASAA2023043043065.md): Transceiver · faulty · Apr 30, 2023 · N479AS · Boeing 737990ER · Weather Radar System
  > CA RADAR DISPLAY APPEARS TO PAINT THE TERRAIN UP TO 160NM IN AUTO MODE. DISH SEEMS TO BE STUCK IN DOWN POSITION IN AUTO) MANUAL WORKS FINE AND FO'S SIDE SEEMS NORMAL IN AUTO MODE. GROUNDED - YES. REMOVED AND INSTALLED NEW WX RT. REF B737-900 AMM 34-43-41/401.
- [SDR ASAA2023041642900](https://openairdocs.org/sdr/ASAA2023041642900.md): Valve · failed · Apr 16, 2023 · N479AS · Boeing 737990ER · Autopilot System
  > AP "A" WILL NOT ENGAGE. GROUNDED - YES. REMOVED & REPLACE BOTH SOLENOIDS AT A/P ACTUATOR A (M943). IAW B737-900 AMM 22-11-12-400-801.
- [SDR ASAA2023041242816](https://openairdocs.org/sdr/ASAA2023041242816.md): Pressure Switch · failed insp · Apr 12, 2023 · N479AS · Boeing 737990ER · Autopilot System
  > ON CLIMBOUT AUTOPILOT B WAS SELECTED AFTER A COUPLE OF SECONDS IT DIS-ENGAGED. CONSULTED QRH AND AUTOPILOT B WAS SELECTED AGAIN AND IT DIS-ENGAGED AFTER A COUPLE OF SECONDS. AUTOPILOT A WAS SELECTED AND IT WORKED NORMAL. GROUNDED - YES. REMOVED & REPLACE BOTH
- [SDR ASAA2023040942818](https://openairdocs.org/sdr/ASAA2023040942818.md): Panel · faulted · Apr 9, 2023 · N479AS · Boeing 737990ER · HF Communications System
  > HF/SAT XFER BACKLIGHT BURNT OUT IN THE #2 HF POSITION. GROUNDED - YES. REMOVED AND REPLACED HF/SAT TRANSFER PNL REF B737-900 AMM 23-15-00.
- [SDR ASAA2023032842663](https://openairdocs.org/sdr/ASAA2023032842663.md): Unknown · unknown · Mar 28, 2023 · N479AS · Boeing 737990ER · Autopilot System
  > WHILE ACCOMPLISHING FMC & NAV ASA TASK CARD 78222000 HAD FAIL MSG 22-11527 ELV CMD WRAP TEST FFC-B. GROUNDED - YES. REF B737-900 FIM 22-14 TASK 801 NO FAULTS DETECTED AT THIS TIME. REF B737-900 AMM 22-00-01 PERFORMED LLM AUTOLAND TEST, ALL TEST PASSED.
- [SDR ASAA2023032542559](https://openairdocs.org/sdr/ASAA2023032542559.md): Control Panel · intermittent · Mar 25, 2023 · N479AS · Boeing 737990ER · Autopilot System
  > DURING CLIMBOUT, NOTICED THE GREEN DESELECT LIGHT ON THE N1 SWITCH - LOCATED ON THE MCP - WOULD INTERMITTENTLY FLASH ON AND OFF. APPEARS VERY DIM WHEN ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED DFCS MODE CONTROL PANEL. REF B737-900 AMM 22-11-34-000-80
- [SDR ASAA2023032342575](https://openairdocs.org/sdr/ASAA2023032342575.md): Unknown · unknown · Mar 23, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > WHILE IN FLIGHT AND OPERATING UNDER MEL 34-36J WITH FMC SWITCH "BOTH ON R", THE RIGHT FMC FAILED. VTK WAS DISPLAYED AND NAV INFORMATION WAS LOST ON BOTH NAV DISPLAYS. AFTER 2-3 MINUTES NORMAL OPERATION RESUMED. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 T
- [SDR ASAA2023032042445](https://openairdocs.org/sdr/ASAA2023032042445.md): Computer · faulty · Mar 20, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > DURING CLIMB/ CRUISE/ DESCENT THE FMC P/RST LIGHT ILLUMINATED AT RANDOM TIMES WITHOUT A FMC SCRATCH PAD MSG. MOST OF THE TIME IT WAS ONLY ONE (CA SIDE OR FO SIDE) AT ANYTIME. OCCASIONALLY BOTH ILLUMINATED AT THE SAME TIME. AT THE TOP OF DESCENT THE CA FMC P/RS
- [SDR ASAA2023031942437](https://openairdocs.org/sdr/ASAA2023031942437.md): Fmc · failed · Mar 19, 2023 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > FMC FAIL - DISPLAY OF "VTK" FOLLOWED BY "MAP" FAILURE FLAGS ON BOTH NAVIGATION DISPLAYS. GROUNDED - YES. AIR TURNBACK -- REMOVED AND REPLACED L/H FMC. REF B737-900 AMM 34-61-02.
- [SDR ASAA2023030642225](https://openairdocs.org/sdr/ASAA2023030642225.md): Battery Pack · none · Mar 6, 2023 · N479AS · Boeing 737990ER · Emergency Lighting
  > RH ROW 29 & 29 INTERIOR BIN EMERGENCY LIGHTS INOP. GROUNDED - YES. REMOVED AND REPLACED OPS CHECK GOOD ROW 25/29 EMERGENCY LIGHT BATTERY PACK IAW B737-900ER AMM 33-51-06-960-805 STEP 4.
- [SDR ASAA2023013041746](https://openairdocs.org/sdr/ASAA2023013041746.md): Unknown · unknown · Jan 30, 2023 · N479AS · Boeing 737990ER · Passenger/Crew Doors
  > L2 DOOR WILL NOT FULLY OPEN. GROUNDED - YES. L2 DOOR OPENS AND CLOSES NORMALLY REF B737-900 AMM 52-13-00.
- [SDR ASAA2023011841565](https://openairdocs.org/sdr/ASAA2023011841565.md): Sensor · faulted · Jan 18, 2023 · N479AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > L1 WINDOW OVERHEAT LIGHT ILLUMINATED AFTER TAXI IN. ENGINE SHUT DOWN. OVERHEAT LIGHT ILLUMINATED AFTER POWER TRANSFER FROM APU TO GROUND POWER. GROUNDED - YES. CONFIRMED. BITE CHECK OF M321 FAULTS SENSOR. MOVED SENSOR SELECT SWITCH S1078 TO SPARE POSITION REF
- [SDR ASAA2023011841564](https://openairdocs.org/sdr/ASAA2023011841564.md): Warning Message · false activation · Jan 18, 2023 · N479AS · Boeing 737990ER · Windshield/Door Rain/Ice Removal
  > LEFT FWD WINDOW HEAT OVERHEAT LIGHT ILLUMINATED DURING CLIMB. QRH PROCEDURE DID NOT RESOLVE ISSUE. GROUNDED - YES. PERFORMED LEFT FRONT WHCU BITE REF B737-900 AMM 30-41-11-401-801. OPS CKS GOOD.
- [SDR ASAA2023010141356](https://openairdocs.org/sdr/ASAA2023010141356.md): Spacer · debonded · Jan 1, 2023 · N479AS · Boeing 737990ER · Turbine Engine Air Inlet Section
  > WHILE ACCOMPLISHING T/C 78472010 FOUND SPACERS 1 & 16 ELASTOMERS DISBONDED. GROUNDED - YES. REMOVED & REPLACED SPACERS 1 & 16 REF T/C #78472010.
- [SDR ASAA2022122751252](https://openairdocs.org/sdr/ASAA2022122751252.md): Spacer · debonded · Dec 25, 2022 · N479AS · Boeing 737990ER · Turbine Engine Air Inlet Section
  > WHILE ACCOMPLISHING T/C 78472010 FOUND SPACERS 11, 21 ELASTOMERS DISBONDED. GROUNDED - YES. REMOVED AND REPLACED FAN BLADE SPACERS 11 AND 21 IN REF TO T/C 78472010.
- [SDR ASAA2022112440923](https://openairdocs.org/sdr/ASAA2022112440923.md): Valve · faulted · Nov 24, 2022 · N479AS · Boeing 737990ER · Cabin Cooling System
  > LEFT HAND PACK LIGHT ON AFTER RECALL CHECK AFTER ENG START. GROUNDED - YES. PERFORMED PACK TEMP CONTROL BITE, STBY OTHER PACK TCV LIGHT ON. REPLACED VALVE STANDBY PACK IN REF TO B737-900 AMM 21-51-11. POST INSTALL BITE INDICATED L/H TRIM AIR VALVE FAULT. REPLA
- [SDR ASAA2022101240275](https://openairdocs.org/sdr/ASAA2022101240275.md): Fmc · faulted · Oct 12, 2022 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > DURING APP PHASE OF FLIGHT, FMC DISAGREE - VERTICAL DISPLAYED ON FMC SCRATCH PAD. GROUNDED - YES. NO LOGGED FAULTS - BOTH FMC'S OP OK.
- [SDR ASAA2022090839883](https://openairdocs.org/sdr/ASAA2022090839883.md): Cdu · malfunctioned · Sep 8, 2022 · N479AS · Boeing 737990ER · Flight Management Computing Hardware System
  > AT CRUSIE FL 360 BOTH CDU'S DISPLAYED MENU PAGE W/NO FMC PROMPT. VTK FLAG ON CA ND. SYSTEM REST W/IN 30 SEC BEFORE CHECKLIST INITIATED. GROUNDED - YES. ACCOMPLISHED B737-900 FIM 34-61 TASK 836, OPS NML.

Next page: https://openairdocs.org/aircraft/N479AS/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 = 'N479AS' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N479AS/reports

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