# SDR DALA2019050902956

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 9, 2019
- Submitted: May 10, 2019
- Operation: Air carrier
- Aircraft: [N503DN](https://openairdocs.org/aircraft/N503DN), registered now
- Make and model: Airbus A350-941
- Registry model: [Airbus A350-941](https://openairdocs.org/model/airbus-a350-941) (OpenAirDocs)
- Aircraft serial: 0149
- Aircraft time: 7,401 hours, 677 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Printed Ckt Board
- Condition: Faulty
- Location: Cabin
- Stage of operation: IN
- How discovered: O
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2019050902956

## Discrepancy

AT CRUISE, SOME OF THE EMERGENCY LIGHTS ILLUMINATED. RESET NBR 1 CIDS, NO HELP. DEFERRED PER ER/A 577980-14-LAX REPLACED PCB FROM SECONDARY POWER DISTRIBUTION BOX SPDB-3 (3XY). LP 4799320

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