# SDR AALA202105069012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 5, 2021
- Submitted: May 9, 2021
- Operation: Air carrier
- Aircraft: [N199UW](https://openairdocs.org/aircraft/N199UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5475
- Aircraft time: 26,257 hours, 10,438 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Inoperative
- Location: Emergency Lights
- 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/AALA202105069012

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 13WL FAILED OPERATIONAL TEST PRIOR TO SLIDE CHANGE. REPLACED BATTERY WITH NEW IAW AMM 33-51-38, OPS CHECK GOOD.

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