# SDR CHI1427

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 16, 1995
- Submitted: March 26, 2000
- Operation: General aviation
- Aircraft: [N237CH](https://openairdocs.org/aircraft/N237CH), registered now
- Make and model: Boeing 234
- Registry model: [Boeing 234](https://openairdocs.org/model/boeing-vertol-234) (OpenAirDocs)
- Aircraft serial: MJ003
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Part number: 114DS2407
- Condition: Spalled
- Location: Pinion Assy
- Part time: 817 hours
- Component: Skf, 234D22004
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CHI1427

## Discrepancy

SPALLED ROLLER.  THE TRANSMISSION WAS REMOVED FOR MAKING CHIPS.  FOUND INPUT PINION BEARING ROLLERS SPALLED.  (X)

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