# SDR AALA202410163865

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 15, 2024
- Submitted: October 16, 2024
- Operation: Air carrier
- Aircraft: [N918US](https://openairdocs.org/aircraft/N918US), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6443
- Aircraft time: 30,145 hours, 12,362 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Failed
- Location: Zone 200
- 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/AALA202410163865

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: WHILE PERFORMING PS CK OF THE CABIN, DURING EPSU TEST,10WL BATTERY FAILED. REPLACED EPSU BATTERY PER AMM 33-51-38, OPS CK GOOD.

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