# SDR YENA201910280630

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 28, 2019
- Submitted: November 1, 2019
- Operation: Air carrier
- Aircraft: [N942JB](https://openairdocs.org/aircraft/N942JB), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6279
- Aircraft time: 22,583 hours, 4,340 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 795323
- Condition: Failed
- Location: Cabin
- Part time: 12,757 hours, 2,461 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/YENA201910280630

## Discrepancy

DURING HEAVY MAINTENANCE, EPSU'S 12WL/14WL FAILED OPS CHECK; REF LHT NR 5200000680-005000929843. REPLACED EPSU BATTERIES 12WL/14WL IAW A321 AMM 33-51-38-400-002-A. OPS CHECK GOOD.

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