# SDR DXTA2015072706049

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: July 24, 2015
- Submitted: July 27, 2015
- Operation: Air carrier
- Aircraft: [N303QS](https://openairdocs.org/aircraft/N303QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500141
- Aircraft time: 1,786 hours, 1,402 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Power Supply
- Part number: 643400
- Part serial: 000053
- Condition: Failed
- Location: Emergency Lights
- Stage of operation: CR
- How discovered: O
- Nature of condition: B
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2015072706049

## Discrepancy

STRANGE ODOR AT CRUISE ALTITUDE.  EMERGENCY LIGHTS TRIGGER ON, RIGHT STAIR LIGHT WAS OUT.  EXERCISED A PRECAUTIONARY LANDING.  TROUBLESHOT EMERGENCY LIGHTS AND FOUND NR 2 FORWARD EMERGENCY POWER SUPPLY TO BE DEFECTIVE CAUSING LIGHTS TO ILLUMINATE & RIGHT STAIR LIGHT OUT.  REPLACED THE POWER SUPPLY IAW MM 33-52-01.  OPS CHECKED GOOD.

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