# SDR 2015FA0000521

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: August 28, 2015
- Submitted: November 2, 2015
- Operation: General aviation
- Aircraft: [N66TK](https://openairdocs.org/aircraft/N66TK), registered now
- Make and model: Stdchr S300RG
- Aircraft serial: 005
- Engine: Lyc IO540*
- System (JASC): [8500 · Engine (Reciprocating)](https://openairdocs.org/jasc/8500)
- Part: Stud
- Part number: LW13794
- Condition: Worn
- Location: Zone 400
- Stage of operation: NR
- How discovered: O
- Nature of condition: Y
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/2015FA0000521

## Discrepancy

THIS STUD HOLDS IDLER SHAFT WHICH SUPPORTS CRANKSHAFT IDLER GEAR.  WHEN STUD FAILED, IDLER GEAR DISENGAGED FROM CAM AND CRANKSHAFT.  THIS CAUSED ENGINE TO STOP.

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