# SDR AALA202607290336

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 28, 2026
- Submitted: July 29, 2026
- Operation: Air carrier
- Aircraft: [N450AN](https://openairdocs.org/aircraft/N450AN), registered now
- Make and model: Airbus A321-253NX
- Registry model: [Airbus A321-253NX](https://openairdocs.org/model/airbus-a321-253nx) (OpenAirDocs)
- Aircraft serial: 10810
- Aircraft time: 17,169 hours, 4,676 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 004753
- Condition: No Test
- Location: Zone 200
- Part time: 49,311 hours, 13,116 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/AALA202607290336

## Discrepancy

AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHTS INOPERATIVE AT THE FOLLOWING SEAT ROWS 3AC AND 4AC. ALSO, SEAT ROWS 8, 11, 12, 13, 16, 17, 18, 19, 20, 24, 25, 37 (ALL ABC SIDE). MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 17WL (AALA202607290336) AND BATTERY (AALA202607293232) PER AMM 33-51-38. A SATISFACTORY OPERATIONAL CHECK OF THE EMERGENCY LIGHTING SYSTEM WAS ACCOMPLISHED WITH NO ISSUES NOTED.

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