# SDR AALA201708089011

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 4, 2017
- Submitted: August 8, 2017
- Operation: Air carrier
- Aircraft: [N128AN](https://openairdocs.org/aircraft/N128AN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6346
- Aircraft time: 9,608 hours, 2,959 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery Pack
- Part number: 321430
- Condition: Discharged
- Location: Cabin
- 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/AALA201708089011

## Discrepancy

AIRCRAFT WAS NOT GROUNDED. PERFORMED EMERGENCY POWER SUPPLY UNIT TEST, FOUND EMERGENCY BATTERY POSITION 13WL FAULT. REPLACED BATTERY PACK 13 WL (AFT) PER MM 33-50-00. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.

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