# SDR SA07051

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 13, 2007
- Submitted: August 14, 2007
- Operation: Air carrier
- Aircraft: [N183UW](https://openairdocs.org/aircraft/N183UW), registered now
- Make and model: Airbus A321-211
- Registry model: [Airbus A321-211](https://openairdocs.org/model/airbus-a321-211) (OpenAirDocs)
- Aircraft serial: 1539
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Epsu
- Part number: 32145510
- Condition: Discharged
- 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/SA07051

## Discrepancy

LAX - THE 3L DOOR EXIT SIGN APPEARED INOPERATIVE.  MAINTENANCE REPLACED THE RIGHT SIDE, MID-CABIN EMERGENCY POWER SUPPLY UNIT, FIN 14WL.  OPERATIONALLY CHECKS OK.

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