# SDR CALA2025122412424

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 23, 2025
- Submitted: December 24, 2025
- Operation: Air carrier
- Aircraft: [N848UA](https://openairdocs.org/aircraft/N848UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1647
- Aircraft time: 71,977 hours, 32,641 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: Failed
- 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/CALA2025122412424

## Discrepancy

EPSU BATTERY EMERGENCY LIGHT FAILED.   EPSU BATTERY WAS REPLACED IAW AMM 33-51-38-000-002-A0, & 33-51-38-400-002-A0.

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