# SDR AALA202512227930

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 18, 2025
- Submitted: December 22, 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: 37,378 hours, 15,636 cycles
- System (JASC): [2565 · Escape Slide](https://openairdocs.org/jasc/2565)
- Part: Slide
- Part number: D30665513
- Part serial: M24130
- Condition: No Test
- Location: Zone 800
- Part time: 11,482 hours, 5,055 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/AALA202512227930

## Discrepancy

AIRCRAFT WAS GROUNDED: FAULT MESSAGE ESCAPE SLIDE LT/EPSU (13WL) AFT L FAULT, ON EPSU 13WL FAULT RED LIGHT COME ON EXTERIOR LIGHTS FAULT DURING SYSTEM TEST. MAINTENANCE REPLACED THE L4 DOOR SLIDE AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WITH NO FAULTS NOTED.

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