# SDR AALA202607173703

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 15, 2026
- Submitted: July 17, 2026
- Operation: Air carrier
- Aircraft: [N198UW](https://openairdocs.org/aircraft/N198UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 5444
- Aircraft time: 42,706 hours, 17,590 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: AD321431
- 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/AALA202607173703

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: DURING THE PS CHECK EPSU SYSTEM TEST, FOUND EPSU (12WL) DID NOT PASS THE TEST. MAINTENANCE REPLACED BATTERY FOR EPSU (12WL) IAW AMM 33-51-38.

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