# Service difficulty reports: N27958

A list on [N27958](https://openairdocs.org/aircraft/N27958.md).

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

- [SDR CALA2026102220512](https://openairdocs.org/sdr/CALA2026102220512.md): Battery · inoperative · Oct 18, 2026 · N27958 · Boeing 7879 · Emergency Lighting
  > AHM DETECTED WELS MSG 33-12130. REMOTE WELS CONTROL UNIT CONFIGURATION DOES NOT AGREE WITH OTHER WIRELESS EMERGENCY LIGHTING SYS CONTROL UNITS. REF FIM DMC-B787-A-33-50-F1-P2A-421A-A TO CONFIRM FAULT. REF CONFIG DWG 2500DD15922 TO AID LOCATING WCU CLASS 30.
- [SDR CALA2026091819550](https://openairdocs.org/sdr/CALA2026091819550.md): Light · damaged · Sep 17, 2026 · N27958 · Boeing 7879 · Emergency Lighting
  > EMERGENCY LIGHT, SEAT 7D DAMAGED. REMOVED AND REPLACED THE SEAT EMERGENCY LIGHT IAW CMM 25-25-89. ITEM GOOD FOR SERVICE.
- [SDR CALA2026083119071](https://openairdocs.org/sdr/CALA2026083119071.md): Pump · leaking · Aug 29, 2026 · N27958 · Boeing 7879 · Wash Water System
  > SUSPECTED POTABLE WATER LEAK AFTER DEPARTURE, RATE 1GAL/10 SECS. FOUND WATER LEAKAGE FROM AFT WATER PUMP. REPLACED AFT WATER PUMP, OPS CHKD OK. IAW AMM DMC-B787-A-38-15-07-00A-720A-A.
- [SDR CALA2026060116671](https://openairdocs.org/sdr/CALA2026060116671.md): Light · detached · May 28, 2026 · N27958 · Boeing 7879 · Emergency Lighting
  > BE PINNACLE/RC ASPIRE ECON SEAT INSPECTION: - EMERGENCY PATH LIGHT FOUND DANGLING @ AISLE SEAT 54D. POSSIBLE FRAYED WIRE. REPLACED EMERGENCY PATH LIGHT AND SECURED AT SEAT ROW 54D, OPS. CHECK GOOD. REF AMM 33-51-06
- [SDR CALA2025113011585](https://openairdocs.org/sdr/CALA2025113011585.md): Unknown · smoke · Nov 29, 2025 · N27958 · Boeing 7879 · Fuselage Structure (General)
  > SMOKE REPORTED FROM WHEEL WELL AREA BY AIRCRAFT BEHIND AND OPS INSPCT ALL LANDING GEARS AND CACS INLETS OUTLETS AND SURROUNDING AREA. NO SIGNS OF OVERHEAT OR FIRE. NO INDICATIONS OF OVERHEAT IN CABIN. NO FLUCUTATIONA OF PACKS APU OR ANY OTHER SYSTEMS. COULD NO
- [SDR CALA2025040703584](https://openairdocs.org/sdr/CALA2025040703584.md): Initiator · expired · Apr 4, 2025 · N27958 · Boeing 7879 · Crew Oxygen System
  > GENERATE LOG PAGE FOR SDR REPORTING. REF LOG PAGE 4381952. FOUND FOLLOWING INITIATOR ASSY EXPIRED. MFD 01/2015: 43ABC. MFD 02/2015: DR3 GLY, 2DF, 31 ABC, 34 ABC,42 ABC,45 ABC,50 ABC, 51 ABC AND 53 ABC. ABOVE MENTIONED INITIATOR ASSY REPLACED PER EC/RA #3520-0
- [SDR CALA2024093000713](https://openairdocs.org/sdr/CALA2024093000713.md): Display · inoperative · Sep 26, 2024 · N27958 · Boeing 7879 · Indicating/Recording System
  > INFORMATION ONLY-CREW DEBRIEF- CREW REPORTED BOTH CAPTAINS DISPLAYS BANK, BOTH CAPT AND FO HUD DISPLAY BLANK, THEY COULD NOT ENTER ANY INFO TO AIRCRAFT USING THE CDU KEYS CORRECTION TO ABOVE INFO- DUE TO MISUNDERSTANDING,THERE WAS NO DISCREPANCIES WITH THE CAP
- [SDR CALA2024071600207](https://openairdocs.org/sdr/CALA2024071600207.md): Warning Message · false activation · Jul 16, 2024 · N27958 · Boeing 7879 · Central Warning
  > GEAR DOOR ADVISORY ONE OR MORE GEAR DOORS ARE NOT CLOSED. FIM TASK REF: 31-90-F8-01A-421B-A CMC MSG# 3251001 FLIGHT STATUS: A INTERMITTENCE CODE: H PH: INITIAL CLIMB NARRATIVE: 32 LGA NWS HM OPS PERFORMED:FIM TASK 32-30-F1-05A-421A,NOSE L/G DOOR CONTROL VAL
- [SDR CALA2024071600502](https://openairdocs.org/sdr/CALA2024071600502.md): Control Valve · faulted · Jul 16, 2024 · N27958 · Boeing 7879 · Landing Gear Door Retract Section
  > AFTER TAKE OFF, NLG DOORS FAILED TO CLOSE AFTER L/G RETRACTION, RESULTING IN AIR TURNBACK. TROUBLESHOOTING REVEALED NO ISSUES, HOWEVER, DUE TO HISTORY, AIRLINE (TOMC) ELECETD TO FERRY FLIGHT BACK TO HOME BASE. PERFORMED FIM TASK 32-30-F1-05A-421A, NOSE L/G D
- [SDR CALA2024071502015](https://openairdocs.org/sdr/CALA2024071502015.md): Landing Gear · warning message · Jul 12, 2024 · N27958 · Boeing 7879 · Nose/Tail Landing Gear
  > UPON GEAR RETRACTION AFTER TAKEOFF NOSE GEAR DOOR DISAGREE PERFORMED: FIM TASK 32-30-F1-05A-421A, NOSE L/G DOOR CONTROL HYDRAULIC.PRESSURE TRANSDUCER INSTALLATION TEST I.A.W AMM VALVE MODULE INSTALLATION TEST I.A.W AMM 32-34-03-00A-720A, NOSE 32-31-19-00A-720A
- [SDR CALA2024052301566](https://openairdocs.org/sdr/CALA2024052301566.md): Spring · damaged · May 21, 2024 · N27958 · Boeing 7879 · Landing Gear System
  > REF LOGPAGE 8031938 DUE TO GEAR DOOR FAULT AND SUBSEQUENT AIR RETURN, AT TOMC REQUEST AIRCRAFT TO BE JACKED AND GEAR SWING CARRIED OUT. NOSE LANDING GEAR JACKED IAW AMM B787-A-07-11-02-00A-912A-A. AC THE CORRECT TIME AS PER THE AMM FOR THE POWER SUPPLY AVAILAB
- [SDR CALA2024052201554](https://openairdocs.org/sdr/CALA2024052201554.md): Warning Message · illuminated · May 21, 2024 · N27958 · Boeing 7879 · Landing Gear Position and Warning
  > GEAR DOOR ADVISORY ONE OR MORE GEAR DOORS ARE NOT CLOSED. FIM TASK REF: 31-90-F8-01A-421B-A CMC MSG# 3251001 FLIGHT STATUS: A INTERMITTENCE CODE: H PH: CLIMB NARRATIVE: 32 LGA NWS HM OPS ON ARRIVAL FLIGHT CREW WAS DEBRIEFED AND THE FOLLOWING INFO WAS ASCERTAI
- [SDR CALA2022111703169](https://openairdocs.org/sdr/CALA2022111703169.md): Light · damaged · Nov 17, 2022 · N27958 · Boeing 7879 · Emergency Lighting
  > FOUND OFCR 4EA FLOOR PROXIMITY LIGHTS DAMAGED REF HEACO NON-ROUT INE NO:9496668 - ORIGINATED BY EMP V903214,EA 2500-09808 REV A O P 028. PERFORMED BY EMP V903214,REPLACED OFCR 4EA FLOOR PROXIMITY LIGHT S AND PERFORMED OPERATIONAL TEST OF THE EMERGENCY LIGHTS F
- [SDR CALA2022111703168](https://openairdocs.org/sdr/CALA2022111703168.md): Light · failed · Nov 17, 2022 · N27958 · Boeing 7879 · Emergency Lighting
  > FOUND G5 GALLEY 4EA FLOOR PROXIMITY LIGHTS DAMAGED REF HAECO NON -ROUTINE NO:9496670 - ORIGINATED BY EMP V903214,EA 2500-09808 REV A OP 045. PERFORMED BY EMP V903214,REPLACED G5 GALLEY 4EA FLOOR PROXIMITY LIGHTS AND PERFORMED OPERATIONAL TEST OF THE EMERGENCY
- [SDR CALA2022111703167](https://openairdocs.org/sdr/CALA2022111703167.md): Light · failed · Nov 17, 2022 · N27958 · Boeing 7879 · Emergency Lighting
  > FOUND G4 GALLEY 4EA FLOOR PROXIMITY LIGHTS DAMAGED REF HAECO NON-ROUTINE NO:9496669 - ORIGINATED BY EMP V903214,EA 2500-09808 REV A OP045. PERFORMED BY EMP V903214,REPLACED G4 GALLEY 4EA FLOOR PROXIMITY LIGHTS AND PERFORMED OPERATIONAL TEST OF THE EMERGENCY LI
- [SDR CALA2022111703166](https://openairdocs.org/sdr/CALA2022111703166.md): Light · failed · Nov 17, 2022 · N27958 · Boeing 7879 · Emergency Lighting
  > THE CONNECT DL0401P2 FOR GALLEY G2F-1C L/H FWD FLOOR PROXIMITY LIGHT DL0401 WAS FOUND WIRE DETACHED REF HAECO NON-ROUTINE NO: 9497158 - ORIGINATED BY EMP V903214,EA 2500-09808 REV A OP 045. PERFORMED BY EMP V903214,REPLACED THE TERMINAL OF CONNECTOR DE04 AMM33
- [SDR CALA2021042600548](https://openairdocs.org/sdr/CALA2021042600548.md): Check Valve · failed · Apr 26, 2021 · N27958 · Boeing 7879 · Air Distribution System
  > REF LOG 6188005 CPCS REPORTS HI LEAK RATE. FOUND SUPPLY DUCT DISCONNECTED AT RECIRC FAN ON LEFT PACK LEFT RECIRC FAN REPLACED DUE TO FAILED CHECK VALVE, PER AMM DMC-B787-A-21-25-17-03B-720A-A, CONNECTING DUCT SEAL AND SLIP JOINT SEAL REPLACED BETWEEN FAN AND H
- [SDR CALA2021030100237](https://openairdocs.org/sdr/CALA2021030100237.md): Beam · corroded · Feb 26, 2021 · N27958 · Boeing 7879 · Fuselage Main, Structure
  > CAB LAV M THRESHOLD BEAM FOUND CORROSION REF NON-ROUTINE NO:9426 589,ORIGINATED BY EMP:V906647,SPEC NO.B787-25-3-0035. PERFORMED BY EMP:V906647,CAB LAVM THRESHOLD BEAM REPAIRED AS PER ECRA 2541-01549 REV.-.RII BY EMP V902604.
- [SDR CALA2021030100236](https://openairdocs.org/sdr/CALA2021030100236.md): Beam · corroded · Feb 25, 2021 · N27958 · Boeing 7879 · Fuselage Main, Structure
  > CAB LAV L THRESHOLD BEAM FOUND CORROSION REF NON-ROUTINE NO:9426 588,ORIGINATED BY EMP:V906647,SPEC NO.B787-25-3-0035. PERFORMED BY EMP:V906647,CAB LAV L THRESHOLD BEAM REPAIRED AS PE R ECRA2541-01548 REV.-. RII BY EMP:V902604.
- [SDR CALA2021022400221](https://openairdocs.org/sdr/CALA2021022400221.md): Light · cracked · Feb 23, 2021 · N27958 · Boeing 7879 · Emergency Lighting
  > FOUND G5 GALLEY RIGHT SIDE AFT WALL MOUNTED EMERGENCY LIGHT ASSY CRACKED REFER NON-ROUTINE NO:9427777, ORIGINATED BY EMP:V903214, SPEC NO.B787-33-3-0002. PERFORMED BY EMP:V903214, REPLACED G5 GALLEY RIGHT SIDE AFT WALL MOUNTED EMERGENCY LIGHT ASSY AND PERFORME
- [SDR CALA2021021900191](https://openairdocs.org/sdr/CALA2021021900191.md): Light · cracked · Feb 19, 2021 · N27958 · Boeing 7879 · Emergency Lighting
  > OFAR LT FWD WALL MOUNTED EMER LT FND CRACKED REF TO NON-ROUTINE NR 9427055, SPEC NO.B787-33-3-0002. PERFORMED BY V903214 REPLACED OFAR LT FWD WALL MOUNTED EMER LT, AND INSTL TEST NORMAL PER AMM 33-51-06-00A-520A &-720A REV.144.
- [SDR CALA2021021900189](https://openairdocs.org/sdr/CALA2021021900189.md): Lens · missing · Feb 19, 2021 · N27958 · Boeing 7879 · Emergency Lighting
  > SEAT 16F EMERGENCY LT LENS FND MISSING REF TO NON-ROUTINE NR 9427051, SPEC NR B787-33-3-0002. PERFORMED REPLACED SEAT 16F EMER LT AND INSTALLATION TEST NORMAL PER AMM 33-51-06-00A-520A & -720A REV.144. IDT BY TA627 V905344.
- [SDR CALA2020071201047](https://openairdocs.org/sdr/CALA2020071201047.md): Connector · broken · Jul 9, 2020 · N27958 · Boeing 7879 · Flight Control System Wiring
  > CAPT REPORTED AFTER T/O AND UPON RETRACTION, GOT SLAT DRIVE EICAS MSG - REPEAT DMC-B787-A27-80-F1-29A-421A-A ACCOMPLISHED.DURING WIRING CHECK FOUND PLUG D1284P OUT OF PLACE AND LOCK BROKEN. CONNECTOR, ELECTRICAL PLUG SHELL P/N BACC65BJ-F REMOVED & REPLACED IN
- [SDR CALA2020071201044](https://openairdocs.org/sdr/CALA2020071201044.md): Warning Message · false activation · Jul 5, 2020 · N27958 · Boeing 7879 · Leading Edge Slat Control System
  > SLAT DRIVE EICAS MSG SHOWS 27-22321. TRIED TO TEST (SLAT PRIMARY FCM L)SYSTEM TEST. PASSED. ALL SLATS FUNCTION WAS NORMAL. NO FOUND FAULT ABOUT THIS PROBLEM DURING TEST AND AFTER DONE.ALSO CHECKED ACTUAL SLAT NR 5 ASSY AND THE SKEW HARNESS ( WIRE) ALL ROU
- [SDR CALA2020071201043](https://openairdocs.org/sdr/CALA2020071201043.md): Sensor · malfunctioned · Jul 5, 2020 · N27958 · Boeing 7879 · Leading Edge Slat Control System
  > CREW REPORTED, "SLATS DRIVE" MESSAGE DISPLAYED DURING CLIMB FOUND MSG 27-22321. FOLLOWED FIM. REPLACED SLAT SKEW DETECTION MECHANISM ASSY. ALL OPERATION NORMAL AND SLATS PRIMARY FCM L GND TEST PASS, NO MSG FOUND. ALSO SLAT BRAKAWAY CONNECTOR FUNCTION TEST NO
- [SDR CALA2018021000583](https://openairdocs.org/sdr/CALA2018021000583.md): Battery · inoperative · Feb 10, 2018 · N27958 · Boeing 7879 · Emergency Lighting
  > THE EMERGENCY LIGHT EXIT SIGN AT THE RT ENTRY DOOR FOUND INOPERATIVE. REPLACED THE BATTERY IAW AMM 33-51-07, OPS CHECKED OK.
- [SDR CALA2018021000582](https://openairdocs.org/sdr/CALA2018021000582.md): Battery · faulty · Feb 10, 2018 · N27958 · Boeing 7879 · Emergency Lighting
  > DURING AN EMERGENCY LIGHTS OPERATIONAL CHECK, EMERGENCY LIGHT INOPERATIVE. REPLACED THE CONTROL UNIT M3351033 AND BATTERY IAW AMM 33-51-07. EMERGENCY LIGHTS OPS CHECKED GOOD.
- [SDR CALA2017061901902](https://openairdocs.org/sdr/CALA2017061901902.md): Battery · discharged · Jun 19, 2017 · N27958 · Boeing 7879 · Emergency Equipment
  > EMERGENCY FLASHLIGHT AT 4R DOOR INOP. RPLD FLASHLIGHT BATTERY REF AMM 25-64-00-00B-921A. OPS CK GOOD.
- [SDR CALA2017052701614](https://openairdocs.org/sdr/CALA2017052701614.md): Battery · faulted · May 27, 2017 · N27958 · Boeing 7879 · Emergency Equipment
  > R2 DOOR EMERGENCY FLASHLIGHT BLINKING RED. REMOVED AND REPLACED THE FLASHLIGHT BATTERY. OPS CHECKED GOOD.
- [SDR CALA2017022400469](https://openairdocs.org/sdr/CALA2017022400469.md): Battery Pack · discharged · Feb 24, 2017 · N27958 · Boeing 7879 · Emergency Lighting
  > DOOR 4L EMERGENCY LIGHTS INOP. REPLACED EMERGENCY LIGHT SYS CONTROL UNIT AND BATT PACK. SYSTEM CHK OK REF DMCB787-A-33-51--07-02B-520A-A AND DMC-B787-A-33-51- 00-00C-320A-A.

## 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 = 'N27958' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N27958/reports

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