# SDR GTIA2025042138861

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 18, 2025
- Submitted: April 21, 2025
- Operation: Air carrier
- Aircraft: [N917NK](https://openairdocs.org/aircraft/N917NK), registered now
- Make and model: Airbus A320-271N
- Registry model: [Airbus A320-271N](https://openairdocs.org/model/airbus-a320-271n) (OpenAirDocs)
- Aircraft serial: 9179
- Aircraft time: 16,480 hours, 6,912 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Epsu
- Part number: 321431
- Part serial: 916683
- Condition: Faulted
- Location: Zone 200
- Part time: 2,085 hours, 917 cycles
- 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/GTIA2025042138861

## Discrepancy

EPSU 10WL FAULT COMES ON DURING OPS CHECK OF L1 DOOR SLIDE CHANGE-R&R 10WL EMS BATTERY IAW AMM 33-51-38 OPS TESST GOOD

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