# SDR AALA202603308202

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2026
- Submitted: March 30, 2026
- Operation: Air carrier
- Aircraft: [N161UW](https://openairdocs.org/aircraft/N161UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1403
- Aircraft time: 78,724 hours, 30,599 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: No Test
- Location: Zone 800
- 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/AALA202603308202

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: MUTLIPLE FAULT MESSAGES FOR THE EMERGENCY POWER SUPPLY UNIT SYSTEM AS WELL AS INOPERATIVE EMERGENCY LIGHTS AT SEATS 14 ABC AND 15 ABC WERE NOTED DURING SYSTEM TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 10WL PER AMM 33-51-38 (AALA202603306873) AND THE L1 DOOR SLIDE PER JOB CARD 26L00025010 (AALA202603308202) WHICH CLEARED THE FAULT MESSAGES. MAINTENANCE FOUND A BROKEN WIRE ON THE WALL CONNECTOR FOR SEAT 14 ABC AND 15 ABC WHICH WAS REPAIRED PER ESPM 20-48-00. (AALA202603308199) A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED WITH NO FAULTS OR ISSUES NOTED.

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