# SDR AALA202510130758

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 10, 2025
- Submitted: October 13, 2025
- Operation: Air carrier
- Aircraft: [N157UW](https://openairdocs.org/aircraft/N157UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5696
- Aircraft time: 36,833 hours, 15,409 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 142952
- Condition: No Test
- Location: Zone 200
- Part time: 36,832 hours, 15,409 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/AALA202510130758

## Discrepancy

AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 12WL INOPERATIVE. REPLACED EMERGENCY POWER SUPPLY UNIT 12WL (AALA202510130758) AND BATTERY (AALA202510133993) PER AMM 33-51-38. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.

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