# SDR AC2R2018042001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 29, 2014
- Submitted: April 20, 2018
- Operation: General aviation
- Aircraft: [N639GG](https://openairdocs.org/aircraft/N639GG), registered now
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft serial: 41308
- Aircraft time: 1,162 hours
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Condition: Corroded
- Location: Cooling Fan
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AC2R2018042001

## Discrepancy

MAIN GEARBOX OIL COOLING FAN CORRODED.  REMOVED THE  BEARING ASSY.

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