# SDR YENA2018121950858

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 15, 2018
- Submitted: December 19, 2018
- Operation: Air carrier
- Aircraft: [N971JT](https://openairdocs.org/aircraft/N971JT), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7390
- Aircraft time: 8,749 hours, 2,895 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 793788
- Condition: No Test
- Location: Emergency Lights
- Part time: 8,749 hours, 2,895 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/YENA2018121950858

## Discrepancy

FT # 1951, BOS-MCO. BAT/EPSU 10WL FWD L SHOWS FAULTED DURING BATTERY CAPACITY TEST TC A320-33-51-00-710-003; REMOVED AND REPLACED EPSU BATTERY PACK IAW AMM 33-51-38 OPS CHECK NORMAL.

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