# SDR USAA2013031800022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 15, 2013
- Submitted: March 19, 2013
- Operation: Air carrier
- Aircraft: [N540UW](https://openairdocs.org/aircraft/N540UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4107
- Aircraft time: 10,975 hours, 4,228 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Condition: Inoperative
- Location: Cabin
- 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/USAA2013031800022

## Discrepancy

C11 CHECK - EMERGENCY LIGHT CHECK SEATS LEFT 22/23 AND RIGHT 21/23 FAILED TO ILLUMINATE.  REMOVED & REPLACED THE EMERGENCY POWER SUPPLY UNIT IAW A321 AMM 33-51-38.

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