# SDR JYDR20170922257

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 20, 2017
- Submitted: September 22, 2017
- Operation: General aviation
- Make and model: Skrsky S64F
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Cylinder Damper
- Part number: 6510611100046
- Part serial: 1182
- Condition: Cracked
- Location: Zone 200
- Part time: 1,309 hours
- Stage of operation: NR
- How discovered: D
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/JYDR20170922257

## Discrepancy

DURING OVERHAUL,  A CRACK WAS FOUND IN THE DAMPER BARREL EXTENDING HOLE TO HOLE AND INTO THE CHECK VALVE BORE.

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