# SDR YENA201711240960

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 24, 2017
- Submitted: November 24, 2017
- Operation: Air carrier
- Aircraft: [N947JB](https://openairdocs.org/aircraft/N947JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6448
- Aircraft time: 12,483 hours, 2,391 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321431
- Part serial: 775032
- Condition: No Test
- Location: Emergency Lights
- Part time: 11,695 hours, 4,190 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/YENA201711240960

## Discrepancy

DURING A WEEKLY CHECK,  FOUND EPSU BATTERY AT 15WL FAILING TO TEST.   R & R EPSU BATTERY IAW AMM 33-51-38. OPS CHECKED GOOD. EPSU OK FOR SERVICE.

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