# SDR YENA201711210951

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 21, 2017
- Submitted: November 22, 2017
- Operation: Air carrier
- Aircraft: [N554JB](https://openairdocs.org/aircraft/N554JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 1898
- Aircraft time: 61,327 hours, 21,816 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321431
- Part serial: 777662
- Condition: Failed
- Location: Emergency Lights
- Part time: 9,909 hours, 3,637 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/YENA201711210951

## Discrepancy

FOUND EPSU BATTERY FAULT. 13WL & 12WL,  REMOVED AND REPLACED THE EMERGENCY LIGHT BATTERY 13WL, AFT GALLEY CEILING IAW AMM 33-51-38. OPS CHECKED NORMAL.  REMOVED & REPLACED THE  BATTERY OF THE EMERGENCY POWER SUPPLY UNIT 12WL IAW AMM 33-51-38. OPS CHECKED GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.