# SDR USAA2012052900022

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2012
- Submitted: May 29, 2012
- Operation: Air carrier
- Aircraft: [N536UW](https://openairdocs.org/aircraft/N536UW), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 4025
- Aircraft time: 8,904 hours, 3,369 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 32146210
- Part serial: 132768
- Condition: Inoperative
- Location: Cabin
- Part time: 8,890 hours, 3,366 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/USAA2012052900022

## Discrepancy

RED EMERGENCY EXIT LIGHTS AROUND R2 AND L2 DOOR WILL NOT ILLUMINATE.  REMOVED AND REPLACED EMERGENCY POWER SUPPLY UNIT (EPSU) 14WL, IAW AMM 33-51-38, OPS CHECKED GOOD.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain, except the copies of manufacturers’ service documents, which belong to their rights holders.