# SDR DALA2025012100477

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2025
- Submitted: January 21, 2025
- Operation: Air carrier
- Aircraft: [N508DA](https://openairdocs.org/aircraft/N508DA), registered now
- Make and model: Airbus A321-271NX
- Registry model: [Airbus A321-271NX](https://openairdocs.org/model/airbus-s-a-s-a321-271nx) (OpenAirDocs)
- Aircraft serial: 10898
- Aircraft time: 9,936 hours, 2,388 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- 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/DALA2025012100477

## Discrepancy

AIRCRAFT 5008, EPSU 16WL FAULT ON EPSU SYS TEST. CORRECTIVE ACTION: REPLACED EPSU BATTERY IAW A321 AMM 33-51-38. OPS CHECK GOOD. (LP 6443172)

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