# SDR AC2R2018041901

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 20, 2017
- Submitted: April 19, 2018
- Operation: General aviation
- Aircraft: N139CW
- Make and model: Agusta AB139
- Registry model: [Agusta AB139](https://openairdocs.org/model/agusta-ab139) (OpenAirDocs)
- Aircraft serial: 31020
- Aircraft time: 7,997 hours
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Condition: Rough
- Location: Oil Cooler
- Stage of operation: NR
- How discovered: 9
- Nature of condition: E
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AC2R2018041901

## Discrepancy

OIL COOLER HAD EXCESSIVE VIBRATION.  BEARING ROUGH.

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