# SDR AALA202111176339

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 16, 2021
- Submitted: November 17, 2021
- Operation: Air carrier
- Aircraft: [N101NN](https://openairdocs.org/aircraft/N101NN), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 5834
- Aircraft time: 24,997 hours, 5,118 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: Fault Message
- Location: Zone 200 - Fuse
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202111176339

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FOUND FAULT ON CABIN INTERCOMMUNICATION DATA SYSTEM EMERGENCY POWER SUPPLY UNIT TEST BATTERY. REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT BATTERY FORWARD LEFT PER AMM 33-51-38.

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