# SDR CA110610009

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 9, 2011
- Submitted: September 9, 2011
- Operation: General aviation
- Make and model: Urocop EC120B
- Registry model: [Urocop EC120B](https://openairdocs.org/model/eurocopter-ec120b) (OpenAirDocs)
- Aircraft time: 92 hours
- Engine: Tmeca ARRIU2F
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Freq Adapter
- Part number: C622A4002102
- Condition: Failed
- Location: Main Rotor
- Part time: 338 hours
- Stage of operation: TO
- How discovered: O
- Nature of condition: E
- Precautionary procedure: C
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA110610009

## Discrepancy

DURING A MAJOR INSPECTION, DISCOVERED  THE FREQUENCY ADAPTER WAS INCORRECT (TOO LONG).   PILOT HAD JUST REPORTED A SERIOUS VIBRATION ON THE GROUND.   REMOVED THE FREQUECY ADAPTER AND FOUND THAT 1 OF THEM HAD STRETCHED AND REQUIRED A COMPLETE TURN IN ON THE ROD END TO FALL BACK INTO RIGGING SPECICATIONS.

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