# SDR AALA202211014520

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 31, 2022
- Submitted: November 1, 2022
- Operation: Air carrier
- Aircraft: [N161UW](https://openairdocs.org/aircraft/N161UW), registered now
- Make and model: Airbus A300*
- Aircraft serial: 1403
- Aircraft time: 70,000 hours, 26,675 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32145510
- Part serial: 2221
- Condition: None
- Location: Zone 200 - Fuse
- Part time: 47,606 hours, 17,618 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/AALA202211014520

## Discrepancy

AIRCRAFT WAS GROUNDED: AISLE OVERHEAD EXIT SIGN AFT SIDE WILL NOT ILLUMINATE AT SEAT ROWS 23 AND 24. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 11WL (AALA202211014520) AND BATTERY (AALA202211017792) PER AMM 33-51-38. ALSO REPLACED EMERGENCY POWER SUPPLY UNIT 13WL BATTERY (AALA202211017659) PER AMM 33-51-38. A SATISFACTORY OPEATIONAL CHECK WAS ACCOMPLISHED.

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