# SDR AALA202312194656

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 19, 2023
- Submitted: December 19, 2023
- Operation: Air carrier
- Aircraft: [N767UW](https://openairdocs.org/aircraft/N767UW), registered now
- Make and model: Airbus A319-112
- Registry model: [Airbus A319-112](https://openairdocs.org/model/airbus-industrie-a319-112) (OpenAirDocs)
- Aircraft serial: 1382
- Aircraft time: 58,860 hours, 37,264 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145410
- Part serial: 3351
- Condition: No Test
- Location: Zone 200 - Fuse
- Part time: 56,165 hours, 35,771 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/AALA202312194656

## Discrepancy

AIRCRAFT WAS GROUNDED: EMERGENCY LIGHTS AT SEAT ROWS 8, 11, 12, 14, 15, 16, 17, 20 AND 21 ARE INOPERATIVE. MAINTENANCE FOUND A FAULT MESSAGE FOR EMERGENCY POWER SUPPLY UNIT 11WL DURING A SYSTEM BITE TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 11WL AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK.

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