# SDR YENA20140524101

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 24, 2014
- Submitted: May 27, 2014
- Operation: Air carrier
- Aircraft: [N633JB](https://openairdocs.org/aircraft/N633JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2671
- Aircraft time: 33,954 hours, 11,927 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 321431
- Part serial: 049399
- Condition: Failed
- Location: Emergency Lights
- Part time: 33,954 hours, 11,927 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/YENA20140524101

## Discrepancy

MAINTENANCE CHECK FOUND EMERGENCY LIGHTING FAILED, FAULT MESSAGE EPSU BATTERY FWD L.  REPLACED BATTERY POWER SUPPLY UNIT 10WL IAW AMM 33-51-38-400-002A.  OPS CHECKED OK IAW AMM 33-51-00-710-001A.

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