# SDR AALA202402034569

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 1, 2024
- Submitted: February 3, 2024
- Operation: Air carrier
- Aircraft: [N162UW](https://openairdocs.org/aircraft/N162UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1412
- Aircraft time: 73,372 hours, 28,162 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- Condition: Faulty
- 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/AALA202402034569

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT BATTERY MID LEFT FAULTED DURING EMERGENCY LIGHTS BUILT IN TEST EQUIPMENT CHECK. REMOVED AND REPLACED (15WL) EMERGENCY POWER SUPPLY UNIT BATTERY PER AMM 33-51-38.

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