# SDR 2008UALA02921

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 19, 2008
- Submitted: May 21, 2008
- Operation: Air carrier
- Aircraft: [N197UA](https://openairdocs.org/aircraft/N197UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 26901
- Aircraft time: 43,660 hours, 5,305 cycles
- Engine: Pwa PW4056
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Faulty
- Location: Emergency Lights
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2008UALA02921

## Discrepancy

FC EMERGENCY LIGHTS FLASH ON AND OFF. AFTER A HISTORY OF EXTENSIVE TROUBLE SHOOTING  REPLACED POWER SUPPLY M6000 AT DOOR 1R LIGHTS TESTED OK. AC OK FOR SERVICE.

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