# SDR CA960614021

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 8, 1996
- Submitted: March 26, 2000
- Operation: General aviation
- Make and model: Aerosp ATR-42
- Registry model: [Aerosp ATR-42](https://openairdocs.org/model/aerospatiale-atr-atr-42) (OpenAirDocs)
- Engine: Pwa PW120
- System (JASC): [7210 · Turbine Engine Reduction Gear](https://openairdocs.org/jasc/7210)
- Part: Bearing
- Part number: 310924401
- Condition: Spalled
- Location: Rgb Nr 15 Brg
- Part time: 7,573 hours
- Component: Pwa
- 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/CA960614021

## Discrepancy

(CAN)REDUCTION GEARBOX METAL CONTAMINATION. #15 BEARING SUFFERED A MAJOR FAILURE WITH SPALLING ON THE ROLLERS AND THE OUTER RACE. NOTE: ENGINE LOGS INDICATE THAT M50 BEARING MATERIAL PLATELETS WERE DISCOVE RED IN THE RGB 2 MONTHS BEFORE THIS FAILURE BUT NO FURTHER METAL WAS FOUND IN A SAMPLE TAKEN 10 DAYS LATER.

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