# SDR AALA202411061695

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 5, 2024
- Submitted: November 6, 2024
- Operation: Air carrier
- Aircraft: [N934AA](https://openairdocs.org/aircraft/N934AA), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 7500
- Aircraft time: 22,896 hours, 9,006 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Warning Message
- Location: Zone 200
- Stage of operation: IN
- How discovered: O
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202411061695

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING PRE L3 SLIDE CHANGE, EMERGENCY POWER SUPPLY UNIT BITE CHECK FOUND MESSAGES BATTERY/EMERGENCY POWER SUPPLY UNIT (10WL) FORWARD LEFT & BATTERY/EMERGENCY POWER SUPPLY UNIT (13WL) AFT LEFT. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERIES AT 10WL (AALA202411069565) AND 13WL.

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