# SDR YENA20160121051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2016
- Submitted: January 22, 2016
- Operation: Air carrier
- Aircraft: [N821JB](https://openairdocs.org/aircraft/N821JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 5417
- Aircraft time: 13,686 hours, 3,987 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321431
- Part serial: 759073
- Condition: Failed
- Location: Emergency Lights
- Part time: 13,686 hours, 3,987 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/YENA20160121051

## Discrepancy

ALL EMERGENCY LIGHTS FAIL TO ILLUMINATE WHILE ON BATTERIES ONLY. EMERGENCY LIGHT BITE TEST CALLS MULTIPLE EPSU FAILS.   R & R BATTERIES OF EPSU IAW AMM 33-51-38.  OPS CHECK GOOD AT THIS TIME IAW AMM 33-51-00-710-001-A.

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