# SDR YENA200812020122

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 28, 2008
- Submitted: December 2, 2008
- Operation: Air carrier
- Aircraft: [N639JB](https://openairdocs.org/aircraft/N639JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2814
- Aircraft time: 10,196 hours, 3,596 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 053006
- Condition: Discharged
- Location: Cabin
- Part time: 1,613 hours, 588 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/YENA200812020122

## Discrepancy

EMERGENCY LIGHT TEST FAILED. "LEFT EPSU" ON WEEKLY CHECK.  REMOVED AND REPLACED LEFT EPSU BATTERY (11W) IAW TSM 33-51-00-810-808.  OPS TEST OF EMERGENCY LIGHT SYS OK.

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