# SDR CA120417003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 16, 2012
- Submitted: September 14, 2015
- Operation: General aviation
- Make and model: Bell 429
- Registry model: [Bell 429](https://openairdocs.org/model/bell-helicopter-textron-canada-429) (OpenAirDocs)
- Engine: Pwc PW207D
- System (JASC): [6220 · Main Rotor Head](https://openairdocs.org/jasc/6220)
- Part: Barrel Nut
- Part number: NAS577C4P
- Condition: Misinstalled
- Location: Main Rotor
- Part time: 183 hours
- Stage of operation: IN
- How discovered: 9
- Nature of condition: W
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA120417003

## Discrepancy

(CAN) DURING A SCHEDULED MAINTENANCE FOR C OF A RENEWAL INSPECTION THE BARREL NUTS, EIGHT OF THEM ON ALL FOUR OF THE MAIN ROTOR GRIP ASSY, WERE FOUND INSTALLED BACKWARD.

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