# SDR GUU2004F00020

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2004
- Submitted: June 25, 2004
- Operation: Air carrier
- Aircraft: N87557
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE246
- Engine: Pwa PT6*
- System (JASC): [3400 · Navigation System](https://openairdocs.org/jasc/3400)
- Part: Controller
- Part number: 6226521016
- Condition: Shorted
- Location: Navagation
- Stage of operation: AP
- How discovered: O
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/GUU2004F00020

## Discrepancy

DURING APPROACH, ODOR OF ELECTRICAL SMOKE WAS PRESENT IN THE COCKPIT, AND NR 1 NAVIGATION CONTROLLER WAS INOPERATIVE.  REMOVED AND REPLACED NR 1 NAVIGATION CONTROLLER.  OPERATIONAL CHECK NORMAL.

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