# SDR AU980523

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 13, 1998
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Bell 412
- Registry model: [Bell 412](https://openairdocs.org/model/bell-412) (OpenAirDocs)
- Engine: Pwa PT6T3B
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Part number: 204040725003
- Condition: Deteriorated
- Location: Transmission
- Stage of operation: DE
- Nature of condition: J
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AU980523

## Discrepancy

(AUS) MAIN TRANSMISSION BEARING DETERIORATED.  CHIP DETECTOR CONTAINED SIX PIECES OF FLAKED MAGNETIC MATERIAL.  THE TRANSMISSION WAS CHANGED.

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