# SDR YENA2018121040837

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 4, 2018
- Submitted: December 10, 2018
- Operation: Air carrier
- Aircraft: [N558JB](https://openairdocs.org/aircraft/N558JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1915
- Aircraft time: 63,421 hours, 22,894 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321431
- Part serial: 788589
- Condition: Failed
- Location: Emergency Lights
- Part time: 9,339 hours, 3,615 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/YENA2018121040837

## Discrepancy

FT # 391, BOS-TPA. EPSU BATTERY 12WL FAILS EMERGENCY LIGHT SYSTEM TEST; R & R BATTERY AT EPSU 12WL IAW AMM 33-51-38, BATTERY AND SYSTEM OPS CHECK GOOD.

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