# SDR AALA202603254719

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 23, 2026
- Submitted: March 25, 2026
- Operation: Air carrier
- Aircraft: [N953XV](https://openairdocs.org/aircraft/N953XV), registered now
- Make and model: Airbus A321-253N
- Registry model: [Airbus A321-253N](https://openairdocs.org/model/airbus-a321-253n) (OpenAirDocs)
- Aircraft serial: 7942
- Aircraft time: 23,656 hours, 6,532 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/AALA202603254719

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: FAULT FOR EMERGENCY POWER SUPPLY UNIT 12WL DISPLAYED DURING SYSTEM TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 12WL (AALA202603241923) AND BATTERY (AALA202603254719) PER AMM 33-51-38. A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED WITH NO FAULTS NOTED.

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