# SDR DALA2025020300786

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2025
- Submitted: February 3, 2025
- Operation: Air carrier
- Aircraft: [N575DZ](https://openairdocs.org/aircraft/N575DZ), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0282
- Aircraft time: 14,773 hours, 2,024 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Faulted
- Location: Zone 200
- Stage of operation: IN
- How discovered: C
- Nature of condition: L
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2025020300786

## Discrepancy

ON OPS CHECK OF EPSU PER WORK CARD 0591-0201 STEP 10 DOOR 4 LEFT 101WL4 BATTERY SUPPLY SHOWING FAULT ON DISPATCH PAGE WILL NOT CLEAR. REMOVED AND REPLACED DOOR 4 LEFT EMERGENCY POWER SUPPLY UNIT PER A350 AMM 33-51. FUNCTIONAL CHECK GOOD. MSG CLEARED. (LP# 6801257)

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