# SDR CA110527004

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 27, 2011
- Submitted: September 9, 2011
- Operation: General aviation
- Make and model: Robsin R44RAVENII
- Aircraft time: 1,360 hours
- Engine: Lyc IO540AE1A5
- System (JASC): [6310 · Engine/Transmission Coupling](https://openairdocs.org/jasc/6310)
- Part: Sprag Clutch
- Part number: C1883
- Condition: Cracked
- Location: Main Rotor
- Part time: 1,405 hours
- 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/CA110527004

## Discrepancy

NOISE HEARD ON SHUTDOWN. CLUTCH DISASSEMBLED AND INSPECTED. FOUND THE SPRAG CLUTCH CAGE CRACKED IN SEVERAL PLACES, ALSO INDIVIDUAL SPRAGS CRACKED.

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