# SDR CHIR201604082347

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 6, 2016
- Submitted: April 8, 2016
- Operation: General aviation
- Aircraft: P2-CH
- Make and model: Boeing 234
- Registry model: [Boeing 234](https://openairdocs.org/model/boeing-vertol-234) (OpenAirDocs)
- Aircraft serial: MJ022
- Aircraft time: 24,174 hours
- System (JASC): [6230 · Main Rotor Mast/Swashplate](https://openairdocs.org/jasc/6230)
- Part: Ring
- Part number: 114R346411
- Part serial: BCW282
- Condition: Cracked
- Location: Swashplate
- Component: Swashplate Assy, Boeing
- Component part number: 414R35059
- 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/CHIR201604082347

## Discrepancy

DURING A VISUAL INSPECTION FOR O/H OF THE UPPER RING ASSY, A HAIR LINE CRACK WAS NOTICED ON THE MAIN BEARING RETENTION SHOULDER OF THE UPPER RING ASSY.  NDT PERFORMED A PENETRANT INSPECTION AND CONFIRMED THE RING WAS CRACKED.  THIS CRACK FOLLOWED A RADIAL LINE IN THE RADIUS PARALLEL TO THE SHOULDER.

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