# SDR YENA2020020430127

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 30, 2020
- Submitted: February 4, 2020
- Operation: Air carrier
- Aircraft: [N955JB](https://openairdocs.org/aircraft/N955JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6757
- Aircraft time: 18,124 hours, 5,920 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 805674
- Condition: Failed
- Location: Emergency Light
- Part time: 9,807 hours, 3,179 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/YENA2020020430127

## Discrepancy

FT # 352, MCO-BOS. EPSU BATTERY (13WL) FAILED CAP CHECK; R & R EPSU (13WL) IAW AMM 33-51-38, BITE CHECK GOOD

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