# SDR UPS08B52465

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 10, 2008
- Submitted: July 1, 2008
- Operation: Air carrier
- Aircraft: [N579UP](https://openairdocs.org/aircraft/N579UP), registered now
- Make and model: Boeing 747-400
- Registry model: [Boeing 747-400](https://openairdocs.org/model/boeing-747-400) (OpenAirDocs)
- Aircraft serial: 26062
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Discharged
- Location: Cockpit
- 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/UPS08B52465

## Discrepancy

INSPECTION TYPE:N/A FWD RT OVERWING EXTERNAL EMERGENCY EXIT LIGHT INOP.  NOTE: TROUBLESHOT TO DEFECTIVE PWR SUPPLY.  DEFERRAL M377738 ISSUED.  REF MEL 33- 51-2-2.  EMERGENCY LIGHTS DEACTIVATED PER SR 747-00-2117. TRANSFERRED TO NR ASL7612

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