# SDR E81RJT229291

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: January 21, 2011
- Submitted: January 24, 2011
- Operation: General aviation
- Aircraft: [N909ST](https://openairdocs.org/aircraft/N909ST), registered now
- Make and model: Beech 400A
- Registry model: [Beech 400A](https://openairdocs.org/model/hawker-beechcraft-400a) (OpenAirDocs)
- Aircraft serial: RK194
- Aircraft time: 2,293 hours, 2,287 cycles
- System (JASC): [2760 · Drag Control System](https://openairdocs.org/jasc/2760)
- Part: Switch
- Part number: 45AS6101519
- Part serial: 37L35
- Condition: Shorted
- Location: Speed Brake
- Stage of operation: DE
- How discovered: C
- Nature of condition: F
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/E81RJT229291

## Discrepancy

INVESTIGATED FLIGHT CREW REPORT OF THE SPEEDBRAKE CNTRL SYS CIRCUIT BREAKER TRIPPING AND NOT RESETTING.  DURING TROUBLESHOOTING FOUND AN INTERNAL SHORT IN THE RT FLAP FOLLOW-UP SWITCH ASSY.  REPLACED THE RT FOLLOW-UP SWITCH ASSY WITH AN O/H REPLACEMENT EXCHANGE UNIT AND ADJUSTED IAW THE MM.  OPS TESTS OF THE SPOILER AND SPEEDBRAKE SYS WERE NORMAL.

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