# SDR AALA202410090309

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 8, 2024
- Submitted: October 9, 2024
- Operation: Air carrier
- Aircraft: [N167US](https://openairdocs.org/aircraft/N167US), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1442
- Aircraft time: 76,177 hours, 29,314 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145510
- Part serial: 2124
- Condition: No Test
- Location: Zone 200
- Part time: 66,960 hours, 25,358 cycles
- 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/AALA202410090309

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: MID LEFT EMERGENCY POWER SUPPLY UNIT (15WL) SHOWING A UNIT FAULT DURING TEST OF EMERGENCY LIGHTS. REMOVED AND REPLACED MID LEFT EMERGENCY POWER SUPPLY UNIT (15WL) PER AMM 33-51-38.

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