# SDR DALA2024022702743

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2024
- Submitted: February 27, 2024
- Operation: Air carrier
- Aircraft: [N509DN](https://openairdocs.org/aircraft/N509DN), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0199
- Aircraft time: 26,057 hours, 2,553 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 2A57101000000
- Part serial: AAAE004074
- Condition: Faulted
- Location: Emergency Lights
- Part time: 2,562 hours, 235 cycles
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2024022702743

## Discrepancy

NRC240-004 MTC TASK - DOOR L2 & L3 EPSU FOUND FAULT MESSAGE ' CABIN EMER EXIT LIGHT " DURING BITE TEST. DR L2 & L3 EPSU REPLACED I.A.W AMM A350-A-33-51-32 AND OPS TEST CARRIED OUT I.A.W AMM A350-A-33-51-XX. FOUND SATISFACTORY. (LP# 0220113)

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