# SDR 364032

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: December 30, 2003
- Submitted: December 30, 2003
- Operation: Air carrier
- Aircraft: N172MJ
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE72
- Aircraft time: 16,111 hours, 24,236 cycles
- System (JASC): [6121 · Propeller Synchronizer Section](https://openairdocs.org/jasc/6121)
- Part: Switch
- Part number: 6014300
- Condition: Sparks
- Location: Prop Sync Sys
- Stage of operation: NR
- How discovered: V
- Nature of condition: B
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/364032

## Discrepancy

WHEN THE NR 2 FLIGHT DIRECTOR PITCH SYNC BUTTON WAS PUSHED IT CAUSED ELECTRICAL SPARKS.  REMOVED AND REPLACED NR 2 FLIGHT DIRECTOR PITCH SYNC BUTTON, SPARKS WHERE CAUSED BY LOOSE BUTTON WHICH SHORTED AGAINST YOKE.

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