# SDR CALA2023072102294

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 20, 2023
- Submitted: July 21, 2023
- Operation: Air carrier
- Aircraft: [N854UA](https://openairdocs.org/aircraft/N854UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1731
- Aircraft time: 65,171 hours, 28,752 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Part serial: 287725
- Condition: Inoperative
- Location: 12wl
- 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/CALA2023072102294

## Discrepancy

EPSU BATTERY (12WL) FAILED ON EMERGENCY LIGHTNING BATTERY CAPACITY TEST AND REQUIRE REPLACEMENT. REPLACEMENT PERFORMED IAW AMM:33-51-38-000-002/33-51-38-400-002 REV 120. P/N OFF:AD3214-31 S/N OFF:287725, P/N ON:AD3214-31, S/N ON:295191. EPSU BATTERY (12WL) FAILED ON EMERGENCY LIGHTNING BATTERY CAPACITY TEST AND REQUIRE REPLACEMENT. REPLACEMENT PERFORMED IAW AMM:33-51-38-000-002/33-51-38-400-002 REV 120. P/N OFF:AD3214-31 S/N OFF:287725, P/N ON:AD3214-31, S/N ON:295191.

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