# Service difficulty reports: N504DN

A list on [N504DN](https://openairdocs.org/aircraft/N504DN.md).

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

- [SDR DALA2025050603510](https://openairdocs.org/sdr/DALA2025050603510.md): Elec Connector · disconnected · May 2, 2025 · N504DN · Airbus A350941 · Light System Wiring
  > 20B, 23B, 25B, 31C, 33C, 35C, 37C, 39C SEAT MOUNTED EMERGENCY LIGHTS INOP. FOUND CONNECTOR J13 AT EMERGENCY LIGHT FLOOR DISCONNECT BOX DISCONNECTED. RECONNECTED J13. OPS CHECK NORMAL. REF A350 AWM 33 -51. (LP# 7183553)
- [SDR DALA2025032002125](https://openairdocs.org/sdr/DALA2025032002125.md): Light · missing · Mar 19, 2025 · N504DN · Airbus A350941 · Emergency Lighting
  > DURING SVC FOUND SEAT 51G SEAT MOUNTED EMER LIGHT MISSING. INSTALLED EMERGENCY LIGHT ASSY @ SEAT 51G PER A350 AMM 33-51. OPS CK NORMAL. (LP# 7181240)
- [SDR DALA2024111911039](https://openairdocs.org/sdr/DALA2024111911039.md): Power Supply · no test · Nov 13, 2024 · N504DN · Airbus A350941 · Emergency Lighting
  > DURING A CHECK EMERGENCY LIGHT OPS TEST FOUND DOOR L3 EPSU (101WL3) INOP. R+R EPSU (101WL3) PER A350 AMM 33-51. SW LOAD COMPLIED WITH. OPS CK GOOD. (LP# 6642953)
- [SDR DALA2023102208666](https://openairdocs.org/sdr/DALA2023102208666.md): Unknown · unknown · Oct 22, 2023 · N504DN · Airbus A350941 · Wing, Plate/Skin
  > AIRCRAFT 3504 RIGHT WING DUE TO AIRBUS FINDINGS AND INSPECT THE GLOW SEALANT ON UPPER STRINGER RIB FEET IN THE OUTER WING BOX IN CERTAIN LOCATIONS AND REPLACES THE GLOW SEALANT IF MISSING PER AIRBUS SB A350-57-P070. CORRECTIVE ACTION: REMOVED SEALANT AS NEEDED
- [SDR DALA2023102208665](https://openairdocs.org/sdr/DALA2023102208665.md): Unknown · unknown · Oct 22, 2023 · N504DN · Airbus A350941 · Wing, Plate/Skin
  > AIRCRAFT 3504 LEFT WING DUE TO AIRBUS FINDINGS AND INSPECT THE GLOW SEALANT ON UPPER STRINGER RIB FEET IN THE OUTER WING BOX IN CERTAIN LOCATIONS AND REPLACES THE GLOW SEALANT IF MISSING PER AIRBUS SB A350-57-P070. CORRECTIVE ACTION: REMOVED SEALANT AS NEEDED
- [SDR DALA2023102008652](https://openairdocs.org/sdr/DALA2023102008652.md): Unknown · unknown · Oct 20, 2023 · N504DN · Airbus A350941 · Wing Main, Frame Structure
  > AIRCRAFT 3504 RIGHT WING DUE TO AIRBUS FINDINGS AND INSPECT THE GLOW SEALANT ON STRINGER RIB FEET IN THE OUTER WING BOX IN CERTAIN LOCATIONS AND REPLACES THE GLOW SEALANT IF MISSING PER AIRBUS SB A350-57-P067 AND FAA AD 2021-16-03. CORRECTIVE ACTION: REMOVED S
- [SDR DALA2023102008651](https://openairdocs.org/sdr/DALA2023102008651.md): Unknown · unknown · Oct 20, 2023 · N504DN · Airbus A350941 · Wing, Plate/Skin
  > AIRCRAFT 3504 LEFT WING DUE TO AIRBUS FINDINGS AND INSPECT THE GLOW SEALANT ON STRINGER RIB FEET IN THE OUTER WING BOX IN CERTAIN LOCATIONS AND REPLACES THE GLOW SEALANT IF MISSING PER AIRBUS SB A350-57-P067 AND FAA AD 2021-16-03. CORRECTIVE ACTION: REMOVED SE
- [SDR DALA2023082406896](https://openairdocs.org/sdr/DALA2023082406896.md): Unknown · unknown · Aug 23, 2023 · N504DN · Airbus A350941 · Air Conditioning System
  > SHIP 3504 -ATB- DUE TO (AIR PACK 1 LEAK) ECAM MESSAGE. CORRECTIVE ACTION: FOUND SEAL BLOWN OUT AT RIGHT DUCT CONNECTION TO THE LEFT HEAT EXCHANGER. REPLACED SEAL. (LP 4528555)
- [SDR DALA2023060804681](https://openairdocs.org/sdr/DALA2023060804681.md): Unknown · unknown · Jun 8, 2023 · N504DN · Airbus A350941 · Passenger/Crew Doors
  > SHIP 3504 DOOR 2L CENTER GUIDE BEARING DAMAGED. CORRECTIVE ACTION: REMOVED AND REPLACED 2L DOOR CENTER GUIDE BEARING. (8985299)
- [SDR DALA2023060804680](https://openairdocs.org/sdr/DALA2023060804680.md): Unknown · unknown · Jun 8, 2023 · N504DN · Airbus A350941 · Passenger/Crew Doors
  > SHIP 3504 DOOR 1L CENTER GUIDE BEARING DAMAGED. CORECTIVE ACTION: REMOVED AND REPLACED DOOR 1L CENTER GUIDE BEARING. (4789700)
- [SDR DALA2022040602350](https://openairdocs.org/sdr/DALA2022040602350.md): None · none · Apr 5, 2022 · N504DN · Airbus A350941 · Passenger Oxygen System
  > SHIP 3504 - O2 MASKS DROPPED ON LANDING LAST ROW OF DPS ROW25. CORRECTIVE ACTION: RESTOWED PASSENGER O2 MASKS ROW 24 SEATS (7883349)
- [SDR DALA2022040402289](https://openairdocs.org/sdr/DALA2022040402289.md): Antenna · inoperative · Apr 4, 2022 · N504DN · Airbus A350941 · Navigation System
  > SHIP 3504 -ATB- DUE TO BOTH WEATHER RADAR SYSTEMS INOP. CORRECTIVE ACTION: FOUND RADOME DELAMINATED. R & R RADOME PER A350-A-53-15. R & R'D WXR DRIVE UNIT PER A350-A-34-71. ALL CHECKS GOOD. (7883333)
- [SDR DALA2023053104362](https://openairdocs.org/sdr/DALA2023053104362.md): Unknown · unknown · Mar 2, 2022 · N504DN · Airbus A350941 · Fuselage Floor Panel
  > SHIP 3504 AFT CARGO FLOOR PANELS 152LAF AND 152PAF ARE SOFT/SPONGY. CORRECTIVE ACTION: COMPLETED REPAIR PER ASR A350-A-53-02-XX-07001-662A-A. ON 28OCT23, AFT CARGO FLOORPANELS 152LAF AND 152PAF REMOVED AND REPLACED.
- [SDR DALA2021072804248](https://openairdocs.org/sdr/DALA2021072804248.md): Oxygen Mask · unwanted deploy · Jul 26, 2021 · N504DN · Airbus A350941 · Passenger Oxygen System
  > SHIP 3504 - MASK DROPPED ROW 25. CORRECTIVE ACTION: INSPECTED O2 MASKS @ ROW 25, FOUND ALL PANELS LATCHED & SECURED IAW A350 AMM 35-20.(7310096)
- [SDR DALA2021072604197](https://openairdocs.org/sdr/DALA2021072604197.md): Seal · out of position · Jul 24, 2021 · N504DN · Airbus A350941 · Passenger/Crew Doors
  > SHIP 3504 -ATB- DUE TO LOUD NOISE AND VIBRATIONS REPORTED AROUND THE L1 DOOR. CORRECTIVE ACTION: FOUND THE AERODYNAMIC SEAL AT THE TOP OF DOOR PUSHED OUT. REPLACED THE L1 DOOR AERODYNAMIC SEAL.(7310081)
- [SDR DALA2021062403429](https://openairdocs.org/sdr/DALA2021062403429.md): Warning Message · false activation · Jun 24, 2021 · N504DN · Airbus A350941 · Door Warning System
  > SHIP 3504 AFTER TAKEOFF, DISPATCH MESSAGE "CABIN EMER EXIT LT" DISPLAYED. CORRECTIVE ACTION: FAULT CODE 3350F001, FIN 102WL3. R/R EPSU. ALL TEST PASS. SOFTWARE OK. DISPATCH MSG CLEARED. (7380364)
- [SDR DALA2021051102662](https://openairdocs.org/sdr/DALA2021051102662.md): Bushing · worn · May 10, 2021 · N504DN · Airbus A350941 · Emergency Equipment
  > SHIP 3504 DOOR 4L FWD GIRT BAR FITTING BUSHINGS HAVE WEAR MARKS REF AA 5212 01125. CORRECTIVE ACTION: RE WORKED. (7647693)
- [SDR DALA2021051102661](https://openairdocs.org/sdr/DALA2021051102661.md): Bushing · worn · May 10, 2021 · N504DN · Airbus A350941 · Emergency Equipment
  > SHIP 3504 2L AFT GIRT BAR FITTING BUSHINGS HAVE WEAR MARKS REF AA 5121 01125. CORRECTIVE ACTION: RE WORKED. (7647692)
- [SDR DALA2021051102660](https://openairdocs.org/sdr/DALA2021051102660.md): Bushing · worn · May 10, 2021 · N504DN · Airbus A350941 · Emergency Equipment
  > SHIP 3504 DOOR 2L FWD GIRT BAR FITTING BUSHINGS HAVE WEAR MARKS REF AA 5212 01125. CORRECTIVE ACTION: REWORKED BUSHING. (7647691)
- [SDR DALA2021051102659](https://openairdocs.org/sdr/DALA2021051102659.md): Bushing · worn · May 10, 2021 · N504DN · Airbus A350941 · Emergency Equipment
  > SHIP 3504 DOOR 2R AFT GIRT BAR FITTING BUSHING HAS WEAR MARKS REF AA 5212 01125. CORRECTIVE ACTION: REWORKED BUSHING. (7647690)
- [SDR DALA2021051102658](https://openairdocs.org/sdr/DALA2021051102658.md): Bushing · worn · May 10, 2021 · N504DN · Airbus A350941 · Emergency Equipment
  > SHIP 3504 DOOR 1R GIRT BAR FWD FITTING BUSHINGS HAVE WEAR MARKS REF AA 5212 01125. CORRECTIVE ACTION: REWORKED BUSHING. (7647689)
- [SDR DALA2021041402202](https://openairdocs.org/sdr/DALA2021041402202.md): Oxygen Mask · unwanted deploy · Apr 13, 2021 · N504DN · Airbus A350941 · Passenger Oxygen System
  > SHIP 3504 OXYGEN MASKS AT SEATS 25EFG FELL OUT. CORRECTIVE ACTION: STOWED MASKS AT SEATS 25EFG REF A350 AMM 35-23. (7685990)
- [SDR DALA2021032601805](https://openairdocs.org/sdr/DALA2021032601805.md): Oxygen Mask · unwanted deploy · Mar 25, 2021 · N504DN · Airbus A350941 · Passenger Oxygen System
  > SHIP 3504 O2 MASKS AT SEATS 22EF DOWN. CORRECTIVE ACTION: STOWED O2 MASKS AND RESECURED PANEL IAW A350 AMM 35-21. (7685930)
- [SDR DALA2021020100614](https://openairdocs.org/sdr/DALA2021020100614.md): Circuit Board · failed · Jan 31, 2021 · N504DN · Airbus A350941 · Light System Wiring
  > SHIP 3504 CEILING LTS INOP AND EMERGENCY LTS ON 20AB-36ABC WHEN IN ARM POSITION. CORRECTIVE ACTION: REPLACED 503XY, PCB, PER A350 AMM 24-74. EMERGENCY LIGHTS AND CEILING LTS OPS NORMAL.
- [SDR DALA2021011900342](https://openairdocs.org/sdr/DALA2021011900342.md): Pressure Switch · malfunctioned · Jan 16, 2021 · N504DN · Airbus A350941 · Door Warning System
  > CABIN RED PSI PSI LIGHTS FLASH ON DOORS, CABIN SHOWS 0 PSI. CORRECTIVE ACTION: R & R BOTH DIFFERENTIAL PRESSURE SWITCHES (301MS, 302MS), REF A350 A 52-71. PERFORMED BITE TEST OF BOTH DSCS REF A350 A52-71. BOTH PASS, CHECKS GOOD.
- [SDR DALA2021011300204](https://openairdocs.org/sdr/DALA2021011300204.md): Warning Light · false activation · Jan 11, 2021 · N504DN · Airbus A350941 · Door Warning System
  > AFTER SHUTDOWN, CABIN DOORS SHOWED PRESURIZATION RED LIGHTS WARNING. VERIFIED BOTH OUTFLOW VALVES OPENED & 0 PSI DIFFRENTIAL. CORRECTIVE ACTION: NO FAULT IN PLF. T/S PER TSM A350-A-52-71. PERFORMED BITE TEST OF THE DSCS - PASS, PER A350 AMM 52-71.
- [SDR DALA2021011100173](https://openairdocs.org/sdr/DALA2021011100173.md): Warning Light · false activation · Jan 8, 2021 · N504DN · Airbus A350941 · Cabin Pressure Control System
  > UPON ARRIVAL AT GATE ALL DOORS HAVE PRESS FLASHING LIGHT WITH ZERO CABIN PRESSURE AND OUTFLOW VALVES OPEN. REPEAT ITEM. CORRECTIVE ACTION: PERFORMED CPCS BITES OF AUTOMATIC PRESSURE CONTROL AND SEMI-AUTOMATIC PRESSURE CONTROL. BOTH TESTS PASSED. ALSO PERFOR
- [SDR DALA2021011100172](https://openairdocs.org/sdr/DALA2021011100172.md): Oxygen Mask · unwanted deploy · Jan 8, 2021 · N504DN · Airbus A350941 · Passenger Oxygen System
  > ROW 23 O2 PANEL DROPPED. CORRECTIVE ACTION: STOWED O2 MASKS AND SECURED THE PANEL. CHECKED NORMAL, REF A350 AMM 35-21.
- [SDR DALA2021011100171](https://openairdocs.org/sdr/DALA2021011100171.md): Display · malfunctioned · Jan 8, 2021 · N504DN · Airbus A350941 · Door Warning System
  > AFTER LANDING, THE 1L & 1R DOOR STILL SHOWED PRESSURE, BUT THE PRESS SD SHOWED 0 PSI. GROUND CREW ALSO REPORTED PRESSURE ON THE CARGO DOOR. CORRECTIVE ACTION: CONFIRMED CABIN DELTA "P" AND CABIN ALT 0.NO ECAM MESSAGE D/M STATUS. PERFORMED BITE CPCS, TEST OK
- [SDR DALA2021010700103](https://openairdocs.org/sdr/DALA2021010700103.md): Seal · out of position · Jan 6, 2021 · N504DN · Airbus A350941 · Passenger/Crew Doors
  > ATB DUE TO L1 DOOR SQUEAL AND VIBRATION. CORRECTIVE ACTION: FOUND AERODYNAMIC SEAL POPPED OUT AT THE TOP OF DOOR AND NO OTHER SEAL ISSUES FOUND. CYCLED DOOR AND VERIFIED THE PRESSURE SEAL IS IN CORRECT POSITION.
- [SDR DALA2020122304243](https://openairdocs.org/sdr/DALA2020122304243.md): Oxygen Mask · unwanted deploy · Dec 22, 2020 · N504DN · Airbus A350941 · Passenger Oxygen System
  > O2 MASK DEPLOYED AT SEAT 22D. CORRECTIVE ACTION: RE-PACKED MASK AT 22D, PER CMM 35-21-62.
- [SDR DALA2020121504106](https://openairdocs.org/sdr/DALA2020121504106.md): Pressure Switch · dirty · Dec 15, 2020 · N504DN · Airbus A350941 · Cabin Pressure Control System
  > AFTER PARKING AT GATE IN RJTT, ALL CABIN DOORS DISPLAYED FLASHINNG RED LIGHTS, CABIN PRESSURE WAS VERIFIED AT ZERO. OUTFLOW VALVES FULL OPEN. CORRECTIVE ACTION: CONFIRMED CABIN DELTA P & CABIN ALT 0. NO ECAM MSG D/M & STATUS. PERFORMED BITE CPCS TEST OK &
- [SDR DALA2020112403849](https://openairdocs.org/sdr/DALA2020112403849.md): Skin · worn · Nov 24, 2020 · N504DN · Airbus A350941 · Trailing Edge Flaps
  > RT OUTBOARD FLAP TRAILING EDGE LOWER SKIN WORN, REF ERA 588686-14. CORRECTIVE ACTION: REF ERA 588686-14 REF ORIG.
- [SDR DALA2020112403848](https://openairdocs.org/sdr/DALA2020112403848.md): Skin · worn · Nov 23, 2020 · N504DN · Airbus A350941 · Trailing Edge Flaps
  > LT OUTBOARD FLAP TRAILING EDGE LOWER SKIN WORN, REF ERA 588685-14, SEC I, STEP 6, REV O. CORRECTIVE ACTION: REF ERA 588685-14 REV ORIG.
- [SDR DALA2021031601473](https://openairdocs.org/sdr/DALA2021031601473.md): Skin · damaged · Nov 22, 2020 · N504DN · Airbus A350941 · Trailing Edge Flaps
  > SHIP 3504 DAMAGE ON THE LH IB FLAP TRAILING EDGE UPPER SKIN. CORRECTIVE ACTION: COMPLIED WITH ER/A 588651-14 PERMANENT REPAIR. (1661440)
- [SDR DALA2020090902999](https://openairdocs.org/sdr/DALA2020090902999.md): Power Supply · faulted · Sep 8, 2020 · N504DN · Airbus A350941 · Emergency Lighting
  > SHIP 3504 EPSU 102WL3 FAULT 335F001. CORRECTIVE ACTION: REPLACED EPSU 102WL3 REF A350 AMM 33-51.
- [SDR DALA2020021190062](https://openairdocs.org/sdr/DALA2020021190062.md): Light · missing · Feb 8, 2020 · N504DN · Airbus A350941 · Emergency Lighting
  > EMERGENCY SEAT MOUNTED LIGHT MISSING AT SEAT F11. REPLACED LENS. LP 1480888
- [SDR DALA2020112503874](https://openairdocs.org/sdr/DALA2020112503874.md): Skin · dented · Jun 27, 2019 · N504DN · Airbus A350941 · Trailing Edge Flaps
  > SMALL DENT WITH PENETRATION ON RT INBOARD FLAP. CORRECTIVE ACTION: SANDED AREA, REMOVED DAMAGE, APPLIED FM410-1 TO OPEN CORE, PER ASR A350-A-57-54-61. INSTALLED REPAIR DOUBLER AND APPLIED SEALANT AND RESTORED FINISH.
- [SDR DALA2018081094972](https://openairdocs.org/sdr/DALA2018081094972.md): Circuit Board · faulted · Aug 9, 2018 · N504DN · Airbus A350941 · Light System Wiring
  > FLIGHT CABIN EMERGENCY EXIT LIGHT ILLUMINATED AFTER 1 HOUR IN FLIGHT. PERFORMED EPCD BIT TEST AND FOUND PCB-SPB-SPDB1 SLOT C FAULT. RESEATED SLOT C PCB AND EPDC BIT TEST NORMAL.
- [SDR DALA2018010200015](https://openairdocs.org/sdr/DALA2018010200015.md): Not Reported · malfunctioned · Jan 1, 2018 · N504DN · Airbus A350941 · Emergency Lighting
  > EMERGENCY LIGHTS ILLUMINATED FROM DOOR 2L BACK, 8 HOURS INTO THE FLIGHT. REPLACED SSPC 506XY.

## 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 = 'N504DN' AND registry_match = 'registration'
ORDER BY difficulty_date DESC
```

This list as a web page: https://openairdocs.org/aircraft/N504DN/reports

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