# Service difficulty reports: N979AK

A list on [N979AK](https://openairdocs.org/aircraft/N979AK.md).

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

- [SDR ASAA2026091168686](https://openairdocs.org/sdr/ASAA2026091168686.md): Cover · cracked · Sep 11, 2026 · N979AK · Boeing 7379 · Emergency Lighting
  > FLOOR PHOTOLUMINESCENT STRIP COVER SLEEVE CRACKED AND PEELING UP. (A SECTION APPROX 20 INCHES IN LENGTH) LOCATED OUTBOARD AND FWD OF SEAT 1C. GROUNDED - YES. REMOVED AND REPLACED DAMAGED FLOOR PHOTOLUMINESCENT STRIP PER AMM 33-51-15-960-801.
- [SDR ASAA2025092461099](https://openairdocs.org/sdr/ASAA2025092461099.md): Lens · broken · Sep 24, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > ROW 17F EMERGENCY EXIT LIGHT LENS FELL OFF. GROUNDED - YES. FOUND LIGHT LENS BROKEN. INSTALLED NEW LIGHT LENS AS REQUIRED.
- [SDR ASAA2025082860427](https://openairdocs.org/sdr/ASAA2025082860427.md): Cover · detached · Aug 28, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > R2 DOOR EXIT SIGN COVER DETACHED. GROUNDED - YES. RE-INSTALLED LENS SIGN COVER AS REQ'D IAW AMM 33-50-00.
- [SDR ASAA2025070659263](https://openairdocs.org/sdr/ASAA2025070659263.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > WITH THE EMERGENCY EXIT LIGHT SWITCH ON - THE FOLLOWING INTERIOR LIGHTS ARE INOP: "EXIT" LIGHTS OVER L2 AND R2 DOOR, OVERHEAD CENTER AISLE LIGHTS BETWEEEN THE AFT LAVS, THE SINGLE OVERHEAD LIGHT NEAR ROW 33, "EXIT" LIGHTS OVER R1 AND L1 DOORS. GROUNDED - YES.
- [SDR ASAA2025070659262](https://openairdocs.org/sdr/ASAA2025070659262.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AFT OF L1 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 & 33-51-00.
- [SDR ASAA2025070659261](https://openairdocs.org/sdr/ASAA2025070659261.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AFT OF L2 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 & 33-51-00.
- [SDR ASAA2025070659260](https://openairdocs.org/sdr/ASAA2025070659260.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AFT OF RIGHT WING INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 & 33-51-00.
- [SDR ASAA2025070659259](https://openairdocs.org/sdr/ASAA2025070659259.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AFT OF R2 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 & 33-51-00.
- [SDR ASAA2025070659258](https://openairdocs.org/sdr/ASAA2025070659258.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AFT OF RIGHT AFT OVERWING EMERGENCY EXIT DOOR INOP. GROUNDED - YES. REMOVED & REPLACED BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 & 33-51-00.
- [SDR ASAA2025070659257](https://openairdocs.org/sdr/ASAA2025070659257.md): Power Supply · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > EXTERIOR EMERGENCY EXIT LIGHT AFT OF R1 DOOR INOP. GROUNDED - YES. REMOVED & REPLACED EMERGENCY LIGHT BATTERY PACK, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 & 33-51-00.
- [SDR ASAA2025070659248](https://openairdocs.org/sdr/ASAA2025070659248.md): Battery Pack · inoperative · Jul 6, 2025 · N979AK · Boeing 7379 · Emergency Lighting
  > MULTIPLE EMERGENCY LIGHTS IN THE CABIN AND ON THE OUTSIDE OF THE PLANE ARE INOP. GROUNDED - YES. REMOVED + REPLACED BATTERY PACKS M1672, M1673, M2816, M1675, AND M1671, OPS TEST CHECKS GOOD IAW B737MAX AMM 33-51-06 + 33-51-00.
- [SDR ASAA2024032248601](https://openairdocs.org/sdr/ASAA2024032248601.md): Lamp · inoperative · Mar 22, 2024 · N979AK · Boeing 7379 · Emergency Lighting
  > FWD LH SLIDE LIGHT WILL NOT ILLUMINATE. GROUNDED - YES. REPLACED LAMP FOR FWD LH SLIDE LIGHT REF AMM 33-51-04. LAMP TEST GOOD. NO DEFECTS NOTED.
- [SDR ASAA2023110346013](https://openairdocs.org/sdr/ASAA2023110346013.md): Unknown · unknown · Nov 3, 2023 · N979AK · Boeing 7379 · Turbine Section
  > WHILE PERFORMING TASK CARD 72-ASA-04 ON ENG #2, FOUND HPT #1 SHROUD MISSING COATING ON 12 HPT SHROUD PANELS. 75% TO 100% OF COATING MISSING ON ALL PANELS. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023102845868](https://openairdocs.org/sdr/ASAA2023102845868.md): Unknown · unknown · Oct 28, 2023 · N979AK · Boeing 7379 · Power Indicating System
  > AFTER START #1 ENGINE "ENG CONTROL" LIGHT ILLUMINATED. GROUNDED - YES. FOUND MAINTENANCE MESSAGE 80-44000 (ELECTRONIC OVERSPEED THRUST CONTROL MALFUNCTION ACCOMMODATION TEST DID NOT START). ACCOMPLISHED IFIM TASK G80-11-00-810-805. ACCOMPLISHED TEST NO 32 REF
- [SDR ASAA2023100745527](https://openairdocs.org/sdr/ASAA2023100745527.md): Unknown · unknown · Oct 7, 2023 · N979AK · Boeing 7379 · Fuel Controlling System
  > GE DIAGNOSTICS REPORTS THE #2 ENGINE IS GENERATING ALERTS FOR PS3 OUT OF RANGE, PS3 PRESSURE DISAGREE FAULT, P3B OUT OF RANGE, P3B PRESSURE DISAGREE FAULT, OR P3B VS PS3 PRESSURE DISAGREE FAULT. (#PRI1\ETOPS) CNR 20231007039 TASK CARD 73-ASA-01. GROUNDED - YES
- [SDR ASAA2023100645469](https://openairdocs.org/sdr/ASAA2023100645469.md): Unknown · unknown · Oct 6, 2023 · N979AK · Boeing 7379 · Flight Management Computing Hardware System
  > DURING PREFLIGHT FMC DISAGREE ANNUNCIATED. GROUNDED - YES. ACCOMPLISHED QRH PROCEDURE TO RESET FMCS.
- [SDR ASAA2023100545465](https://openairdocs.org/sdr/ASAA2023100545465.md): Unknown · unknown · Oct 5, 2023 · N979AK · Boeing 7379 · Engine Temperature Indicating System
  > REF T/C 05-020-01 IN PRESENT LEG FAULTS MESSAGE 77-41614 "EGT PROBE 2 VALUE DOES NOT AGREE WITH THE AVERAGE OF ALL OTHER VALID EGT PROBE VALUES" IS SHOWING. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK G77-21-00-810-829 AND ENGINE IDLE SYSTEM TEST REF B737-9
- [SDR ASAA2023100445461](https://openairdocs.org/sdr/ASAA2023100445461.md): Unknown · unknown · Oct 4, 2023 · N979AK · Boeing 7379 · Turbine Engine Oil System
  > DRIPPING ENGINE OIL UNDER #2 ENGINE W/SMALL POOLING COLLECTING UNDERNEATH. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023091445135](https://openairdocs.org/sdr/ASAA2023091445135.md): Unknown · unknown · Sep 14, 2023 · N979AK · Boeing 7379 · Flight Compartment Windows
  > L2 WINDOW 'OVERHEAT' ON GROUND. FOLLOWED QRH PROCEDURE BUT LIGHT FAILED TO RESET. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023090744990](https://openairdocs.org/sdr/ASAA2023090744990.md): Unknown · unknown · Sep 7, 2023 · N979AK · Boeing 7379 · Airborne Auxiliary Power Unit (APU) System
  > APU FAULT LIGHT ILLUMINATED ON START. GROUNDED - YES. PERFORMED APU OPS TEST REF 49-11-00-710-802. NO FAULTS. NO HISTORY PAST 60 DAYS.
- [SDR ASAA2023090344916](https://openairdocs.org/sdr/ASAA2023090344916.md): Unknown · unknown · Sep 3, 2023 · N979AK · Boeing 7379 · Flight Management Computing Hardware System
  > MCDU #1 LOCKED UP IN FLIGHT. GROUNDED - YES. PERFORMED A/C POWER RESET REF AMM 24-22-00. MCDU #1 OPS CHECK GOOD AT THIS TIME. NO FAULTS FOUND OR MAINTENANCE MESSAGES. NO HISTORY PAST 90 DAYS. MCDU OPS CK GOOD REF AMM 34-61-01. A/C OK FOR SVC.
- [SDR ASAA2023081644650](https://openairdocs.org/sdr/ASAA2023081644650.md): Control Valve · faulty · Aug 16, 2023 · N979AK · Boeing 7379 · Cabin Cooling System
  > MAINT LIGHT ILLUMINATED ON OVERHEAD PANEL. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM TASK 21-51-00-810-817. PERFORMED A/C IBIT LEFT GROUND TEST. FAULT 21-55090 DISPLAYED. RECOMMEND. R&R LEFT PACK TEMP CONTROL REF B737-9 AMM 21-51-10-100-801/400-801. IBIT TEST P
- [SDR ASAA2023081444636](https://openairdocs.org/sdr/ASAA2023081444636.md): Pump · leaking · Aug 14, 2023 · N979AK · Boeing 7379 · Engine Fuel Pump
  > FUEL LEAKING UNDER #2 ENGINE LEAVING TRAIL ON TAXI IN. GROUNDED - YES. TAGGED OUT FLAP LEVER, B SYS HYDROS, START SWITCH, OPENED # 2 ENG FAN COWLS, RAN #2 ENG. FUEL COMING FROM FUEL PUMP PAD ( STEADY FLOW) REF AMM 71-71-00-200-801, CLOSED FAN COWLS, REMOVED TA
- [SDR ASAA2023072644277](https://openairdocs.org/sdr/ASAA2023072644277.md): Unknown · unknown · Jul 26, 2023 · N979AK · Boeing 7379 · Flight Management Computing Hardware System
  > DURING CRUISE, VTK AND MAP FAILURE FLAGS NOTED ON FIRST OFFICERS DISPLAY. ADDITIONALLY, "SINGLE FMC OPERATION" WAS DISPLAYED ON FIRST OFFICER MCDU. QRH FOR FMC FAIL WAS CONSULTED AND PER CHECKLIST FMC SOURCE SELECT SWITCH WAS PLACED TO "BOTH ON L" NO RIGHT SID
- [SDR ASAA2023063043824](https://openairdocs.org/sdr/ASAA2023063043824.md): Control Valve · faulty · Jun 30, 2023 · N979AK · Boeing 7379 · Cabin Cooling System
  > OVHD MAINT LIGHT ILLUMINATED. GROUNDED - YES. REMOVED AND REPLACED LEFT PACK TEMP CONTROL VALVE, REF B737-9 AMM 21-51-10-400-801, OPS/LEAK CHECK GOOD.
- [SDR ASAA2023062543741](https://openairdocs.org/sdr/ASAA2023062543741.md): Unknown · unknown · Jun 25, 2023 · N979AK · Boeing 7379 · APU Start/Ignition System
  > TWO APU FAULTS ON SEQUENTIAL STARTS. DID NOT TRY A THIRD ATTEMPT. GROUNDED - YES. ON DEFERRAL.
- [SDR ASAA2023052543391](https://openairdocs.org/sdr/ASAA2023052543391.md): Exciter · faulty · May 25, 2023 · N979AK · Boeing 7379 · Exciter
  > #2 ENGINE FAILED TO START. HUNG START AFTER MOTORING FUEL FLOW WAS INTRODUCED AT 0.24 FOR 5-10 SECONDS THEN WENT TO ZERO. GROUNDED - YES. REMOVED AND REPLACED LEFT IGNITION EXCITER, LEFT IGNITER PLUG AND LEFT IGNITION LEAD ON #2 ENGINE PER B737-9 AMM 74-11-01
- [SDR ASAA2023042442970](https://openairdocs.org/sdr/ASAA2023042442970.md): Modulating Valve · faulty · Apr 24, 2023 · N979AK · Boeing 7379 · Pneumatic Distribution System
  > TECH SERVICES REQUEST FOLLOW-UP TO LEFT BLEED LOW TEMP AERMETRIC FAULT GROUNDED - YES. REPLACED THE #1 ENG FAMV PER B737-9 AMM 36-12-03. OPS CKS GOOD, ETOPS GROUND VERIFICATION SUCCESSFUL.
- [SDR ASAA2023042242976](https://openairdocs.org/sdr/ASAA2023042242976.md): Igniter · faulty · Apr 22, 2023 · N979AK · Boeing 7379 · Ignition Harness (Distribution)
  > CREW ADVISED #2 ENG HUNG START 1ST ATTEMPT WITH SUCCESSFUL 2ND ATTEMPT OUT OF RALEIGH. GROUNDED - YES. CHECKED OMS AND FOUND FAULT CODE 74-42544 RIGHT IGNITION SYSTEM IS FAILED. MSG NOT ACTIVE. REMOVED AND REPLACED RIGHT AND LEFT IGNITER PLUG ON THE #2 ENGINE
- [SDR ASAA2023040742770](https://openairdocs.org/sdr/ASAA2023040742770.md): Unknown · unknown · Apr 7, 2023 · N979AK · Boeing 7379 · Flight Management Computing Hardware System
  > FMC DISAGREE MESSAGE DURING PREFLIGHT. GROUNDED - YES. QRH PROCEDURE RESOLVED THE ISSUE.
- [SDR ASAA2023040142667](https://openairdocs.org/sdr/ASAA2023040142667.md): Unknown · unknown · Apr 1, 2023 · N979AK · Boeing 7379 · Airfoil Anti/De-ice System
  > LEFT WING ANTI-ICE INOP. CYCLED WING ANTI-ICE MULTIPLE TIMES AT VARIED THRUST SETTINGS BELOW TEN THOUSAND. GROUNDED - YES. PERFORMED L/WING THERMAL ANTI-ICE VALVE HEALTH CHECK REF B737-9 AMM 30-11-11-200-801, VALVE OPERATED NORMALLY, NO FAULTS NOTED.
- [SDR ASAA2023032442573](https://openairdocs.org/sdr/ASAA2023032442573.md): Unknown · unknown · Mar 24, 2023 · N979AK · Boeing 7379 · Flight Management Computing Hardware System
  > FOUND ON PREFLIGHT- FMC DISAGREE. GROUNDED - YES. PERFORMED B737-9 IFIM TASK 34-61-00-810-918 AND FMC DISAGREE MSG EXTINGUISHED.
- [SDR ASAA2023021641968](https://openairdocs.org/sdr/ASAA2023021641968.md): Unknown · unknown · Feb 16, 2023 · N979AK · Boeing 7379 · Windshield/Door Rain/Ice Removal
  > BOTH FORWARD WINDOW "OVERHEAT" LIGHTS ILLUMINATED AT THE GATE IN RENO. GROUNDED - YES. SWITCHED BOTH OFF FOR 5 MINS, THEN BACK ON, SYSTEM OPERATING NORMALLY.
- [SDR ASAA2023021241905](https://openairdocs.org/sdr/ASAA2023021241905.md): Processor · faulty · Feb 12, 2023 · N979AK · Boeing 7379 · Independent Position Determining System
  > WXR FAIL MESSAGE DISPLAYED ON BOTH CAPT AND FO RADAR DISPLAY. ALSO DID NOT TEST. NO PATTERN FOR TEST ON EITHER DISPLAY. GROUNDED - YES. WXR WAS INOP AS DESCRIBED. CYCLED WXR RADAR C/B. WXR RADAR CAME BACK, OMF FAULT HISTORY HAD WXR PROCESSOR 1 INTERNAL FAULT 3
- [SDR ASAA2023021141902](https://openairdocs.org/sdr/ASAA2023021141902.md): Unknown · unknown · Feb 11, 2023 · N979AK · Boeing 7379 · Independent Position Determining System
  > WXR FAIL MESSAGE ON FO AND CAPT ND'S. GROUNDED - YES. PERFORMED WEATHER RADAR OPERATIONAL TEST IAW B737-9 AMM 34-41-00-710-801.
- [SDR ASAA2023020141754](https://openairdocs.org/sdr/ASAA2023020141754.md): Not Entered · not entered · Feb 1, 2023 · N979AK · Boeing 7379 · Emergency Lighting
  > FOUND EMERG. EXIT AISLE LIGHT ROW 6 RH (L01529) INOP. GROUNDED - YES. FOUND WIRES BROKEN 7 INCHES FROM CONNECTOR D15210. REPAIRED WIRING REF B737-9 SWPM 20-30-12. OPS CHECK GOOD. REF B737-9 AMM 33-51-03.
- [SDR ASAA2023013041743](https://openairdocs.org/sdr/ASAA2023013041743.md): Unknown · unknown · Jan 30, 2023 · N979AK · Boeing 7379 · Flight Management Computing Hardware System
  > CA SIDE MCDU LOCKED UP DURING FLIGHT. GROUNDED - YES. PERFORMED POWER DOWN / POWER UP RESET CAPTAIN'S MCDU OPS NORMAL AS PER B737-9 AMM 34-61-00.
- [SDR ASAA2023011841566](https://openairdocs.org/sdr/ASAA2023011841566.md): Valve · faulted · Jan 18, 2023 · N979AK · Boeing 7379 · Pneumatic Distribution System
  > MAINT LIGHT ILLUMINATED ON OVERHEAD AFTER LANDING. GROUNDED - YES. CONFIRMED FAULT IS 'BLEED FAMV L MAINT MSG #36-12020. REMOVED AND REPLACED #1 ENG FAN AIR MODULATING VALVE REF B737-9 AMM 36-12-03.
- [SDR ASAA2022120141015](https://openairdocs.org/sdr/ASAA2022120141015.md): Pump · leaking · Dec 1, 2022 · N979AK · Boeing 7379 · Engine Fuel Pump
  > NO. 1 ENGINE FUEL LEAK TRAILING BEHIND ENGINE AS TAXING TO PARKING. AFTER ENGINE SHUTDOWN LARGE POOL OF JET FUEL UNDER ENGINE. GROUNDED - YES. PERFORMED IDLE LEAK TEST BY FLIGHT CREW FOR 5 MINUTES IAW B737-9 AMM 71-00-00-790-804-GOO. LEAK FROM FUEL PUMP OUT OF
- [SDR ASAA2022110840687](https://openairdocs.org/sdr/ASAA2022110840687.md): Sensor · faulted · Nov 8, 2022 · N979AK · Boeing 7379 · Engine Oil Indicating System
  > #1 OIL PRESSURE SHOWS 2 PSI WITH ENGINE OFF (CAPTAIN REPORT). GROUNDED - YES. REMOVED AND REPLACED OIL PRESSURE/TEMP SENSOR REF B737-9 AMM 79-32-01.
- [SDR ASAA2022102540464](https://openairdocs.org/sdr/ASAA2022102540464.md): Radar · failed · Oct 25, 2022 · N979AK · Boeing 7379 · Independent Position Determining System
  > WX RADAR FAIL. GROUNDED - YES. ACCOMPLISHED B737-9 IFIM 31-00-00-810-803. ONBD MAINT DOES NOT SHOW ANY FAULTS LOGGED FOR WX RADAR. WX RADAR TEST NORMAL REF. B737-9 AMM 34-41-00-710-801.
- [SDR ASAA2022101740325](https://openairdocs.org/sdr/ASAA2022101740325.md): Engine · vibration · Oct 17, 2022 · N979AK · Boeing 7379 · Turbine Engine Compressor Section
  > CFM REPORTS #1 ENGINE (LEAP-1B28 / SN 603845) HAS ELEVATED NSV VIBRATION LEVELS. ENGINE REMOVAL IS REQUIRED. NO EXTENSION ALLOWED. GROUNDED - YES. ACCOMPLISHED #1 ENGINE CHANGE, REF. ASA T/C 71-ASA-01 & T/C 71-ASA-02.
- [SDR ASAA2022091539982](https://openairdocs.org/sdr/ASAA2022091539982.md): Radar · failed · Sep 15, 2022 · N979AK · Boeing 7379 · Independent Position Determining System
  > DURING DESCENT WXR FAIL. GROUNDED - YES. CYCLED POWER TO WXR OPS RESTORED AND CHECK OK REF B737-9 AMM 34-41-00.
- [SDR ASAA2022090639867](https://openairdocs.org/sdr/ASAA2022090639867.md): Unknown · unknown · Sep 6, 2022 · N979AK · Boeing 737 · Flight Management Computing Hardware System
  > ABOUT ONE HOUR AND TWENTY MINUTES INTO THE FLIGHT AT FL340 WE EXPERIENCED A LEFT FMC FAILURE GROUNDED - YES. FMC FAILURE LASTED ABOUT 30 SECONDS THEN BECAME OPERATIONAL.
- [SDR ASAA2022081639534](https://openairdocs.org/sdr/ASAA2022081639534.md): Static Inverter · inoperative · Aug 16, 2022 · N979AK · Boeing 7379 · DC Generating System
  > ON LANDING ROLLOUT ELEC LIGHT ILLUMINATED. REF ASA 60221484, 60221481, 60221483 GROUNDED - YES. ELEC LT TEST SHOWS STATIC INV INOP. INSTALLED STATIC INVERTER REF B737-9 AMM 24-34-21-400-801. NO HELP. ELEC LIGHT WILL NOT EXTINGUISH WITH STATIC INV INOP FAULT.

## 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 = 'N979AK' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N979AK/reports

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