# SDR CA120328007

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 28, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- System (JASC): [6710 · Main Rotor Control](https://openairdocs.org/jasc/6710)
- Part: Piston
- Part number: 41012001
- Condition: Damaged
- Location: M/R Servo
- Part time: 1,873 hours
- Component: Servo, Woodward
- Component part number: 7665009805
- Stage of operation: NR
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA120328007

## Discrepancy

(CAN) PLASMA COATING HAS DETACHED FROM APPROXIMATELY 15 PERCENT OF THE UPPER RING OF THE HEAD OF THE PISTON HEAD.

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