# SDR DALA2020110603625

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2020
- Submitted: November 6, 2020
- Operation: Air carrier
- Aircraft: [N331DN](https://openairdocs.org/aircraft/N331DN), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 7943
- Aircraft time: 8,694 hours, 3,828 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Condition: Inoperative
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA2020110603625

## Discrepancy

ON S/C EMERGENCY LIGHT BITE TEST BAT/EPSU 12WL MESSAGE.  CORRECTIVE ACTION: R & R EPSU 12WL BATTERY, PER A321 AMM 33-51-38.  CLEARED MESSAGE.

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