# SDR CALA2026072417965

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 21, 2026
- Submitted: July 24, 2026
- Operation: Air carrier
- Aircraft: [N855UA](https://openairdocs.org/aircraft/N855UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1737
- Aircraft time: 67,237 hours, 30,358 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: Warning Message
- Location: Zone 200
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CALA2026072417965

## Discrepancy

EPSU BATTERY EMER R, 33-51-38,  MX MSG DURING EMERGENCY LIGHT TEST ON PTP. REPLACED RIGHT EPSU BATTERY, OPS CHECKED GOOD, IAW AMM 33-51-38-000-002-A AND AMM 33-51-38-400-002-A.

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