# SDR CALA2025063006040

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 29, 2025
- Submitted: June 30, 2025
- Operation: Air carrier
- Aircraft: [N841UA](https://openairdocs.org/aircraft/N841UA), registered now
- Make and model: Airbus A319-131
- Registry model: [Airbus A319-131](https://openairdocs.org/model/airbus-industrie-a319-131) (OpenAirDocs)
- Aircraft serial: 1545
- Aircraft time: 66,680 hours, 29,653 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: No Test
- 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/CALA2025063006040

## Discrepancy

EMERGENCY PWR SUPPLY UNIT FAIL BITE TEST. PTP SHOW MESSAGE EPSU INT LOAD FWD L REMOVED AND REPLACED EPSU BATTERY REF AMM TASK 33-51-38-000-002-A AND TASK 33-51-38-400-002-A. OP CHECK ESPU BITE CHECK GOOD REF AMM TASK 33-51-00-710-001-A.

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