# SDR YENA201908152452

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 12, 2019
- Submitted: August 15, 2019
- Operation: Air carrier
- Aircraft: [N564JB](https://openairdocs.org/aircraft/N564JB), registered now
- Make and model: Airbus A320-232
- Registry model: [Airbus A320-232](https://openairdocs.org/model/airbus-a320-232) (OpenAirDocs)
- Aircraft serial: 2020
- Aircraft time: 66,227 hours, 23,496 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321431
- Part serial: 790221
- Condition: Failed
- Location: Emergency Light
- Part time: 11,691 hours, 4,441 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/YENA201908152452

## Discrepancy

DURING HEAVY MAINTENANCE, EPSU BATTERY ON THE FOLLOWING POSITIONS FAILED TEST 10WL, 11WL, 12WL.   REMOVED AND REPLACED EPSU BATTERIES AT 10WL, 11WL AND 12WL IAW AMM 33-51-38. SYS OPS CHECKS NORMAL. R/R EPSU AT 11WL POSITION IAW AMM 33-51-38.

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