# SDR 8570000

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 27, 2004
- Submitted: February 27, 2004
- Operation: General aviation
- Aircraft: N857CA
- Make and model: Beech 1900D
- Registry model: [Beech 1900D](https://openairdocs.org/model/beech-1900d) (OpenAirDocs)
- Aircraft serial: UE403
- Aircraft time: 5,662 hours, 7,618 cycles
- Engine: Pwa PT6*
- System (JASC): [2731 · Elevator Tab Control System](https://openairdocs.org/jasc/2731)
- Part: Gear
- Part number: S3280
- Condition: Slipped
- Location: Elevator Trim
- Part time: 5,662 hours, 7,618 cycles
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/8570000

## Discrepancy

WHILE CHECKING ELEVATOR TRIM FOR FCD BE2703 DISCOVERED ELEVATOR TAB DIAL MECHANISM MOUNT ASSY HAD SLIPPED CAUSING THE TRIM INDEX MARK CALIBRATION TO CHANGE. UPON FURTHER INSPECTION IT WAS DISCOVERED THAT THE SLIPPAGE WAS CAUSED BY A PRESSED ON GEAR IN THE ELEVATOR TAB DIAL MECHANISM MOUNT ASSY THAT HAD SLIPPED ON ITS SHAFT.

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