# SDR AALA202503107490

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 2025
- Submitted: March 10, 2025
- Operation: Air carrier
- Aircraft: [N9025B](https://openairdocs.org/aircraft/N9025B), registered now
- Make and model: Airbus A319-115
- Registry model: [Airbus A319-115](https://openairdocs.org/model/airbus-a319-115) (OpenAirDocs)
- Aircraft serial: 6393
- Aircraft time: 28,494 hours, 13,348 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 321431
- Part serial: 297099
- Condition: Inoperative
- Location: Zone 200
- Part time: 6,247 hours, 2,474 cycles
- 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/AALA202503107490

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: WHILE ACCOMPLISHING R2 SLIDE OPERATIONAL EPSU TEST RECEIVED MESSAGE EPSU (12WL) EMER R. MAINTENANCE REPLACED EPSU  WITH NEW BATTERY RT OVERWING POSITION 12WL IAW A319 AMM  33-51-31.

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