# SDR YENA2025042900454

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 27, 2025
- Submitted: April 29, 2025
- Operation: Air carrier
- Aircraft: [N982JB](https://openairdocs.org/aircraft/N982JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 07815
- Aircraft time: 32,204 hours, 8,595 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- 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/YENA2025042900454

## Discrepancy

DURING HEAVY MAINTENANCE: EPSU 10WL FAILED OPS CHECK; REF STS NR W003804 N0277 - R & R EPSU BATTERY 10WL IAW AIRBUS AMM 33-51-000-002-A/400-001-A. OPS CKS GOOD IAW AMM 33-51-00-710-001A & 23-73-00-740-005.

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