# SDR AALA201807109022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 8, 2018
- Submitted: July 11, 2018
- Operation: Air carrier
- Aircraft: [N930AU](https://openairdocs.org/aircraft/N930AU), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7539
- Aircraft time: 4,778 hours, 1,788 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 321430
- Part serial: 795171
- Condition: Failed
- Location: Cabin
- Stage of operation: IN
- How discovered: C
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA201807109022

## Discrepancy

AIRCRAFT WAS NOT GROUNDED. WHILE PERFORMING ESPU SYS TEST, ESPU 10WL FWD FAILED. REPLACED EPSU BATTERY 10WL FWD PER AMM 33-51-38.

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