# SDR DALA14033506313

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 23, 2014
- Submitted: June 4, 2014
- Operation: Air carrier
- Aircraft: N673US
- Make and model: Boeing 747451
- Aircraft serial: 30268
- Aircraft time: 64,337 hours, 8,056 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Condition: Inoperative
- 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/DALA14033506313

## Discrepancy

OVERWING EMERGENCY LIGHT INOPERATIVE ON LT WING &  RT WING.  REPLACED POWER SUPPLY M7920. CHECKED NORMAL.

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