# SDR AALA202411254855

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 23, 2024
- Submitted: November 25, 2024
- Operation: Air carrier
- Aircraft: [N180US](https://openairdocs.org/aircraft/N180US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1525
- Aircraft time: 76,301 hours, 29,457 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Condition: No Test
- Location: Zone 200
- 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/AALA202411254855

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING EMERGENCY LIGHTS TEST PORTION OF R3 DOOR SLIDE INSTALLATION, EMERGENCY POWER SUPPLY UNIT BATTERY AT DOOR 1L IS FAULTING. REMOVED AND REPLACED DOOR 1L EMERGENCY POWER SUPPLY UNIT BATTERY.

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