# SDR CA160209003

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 4, 2016
- Submitted: April 22, 2016
- Operation: General aviation
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft time: 1,281 hours
- Engine: Pwc PT6C67C
- System (JASC): [6320 · Main Rotor Gearbox](https://openairdocs.org/jasc/6320)
- Part: Bearing
- Condition: Corroded
- Location: Mr Gearbox
- Part time: 1,230 hours
- Component: Gearbox, Agusta
- Component part number: 4G6320A00133
- Stage of operation: NR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA160209003

## Discrepancy

(CAN) WHILE REMOVING THE ECS PULLEY TO CHANGE A OIL SEAL ON THE ECS PULLEY SHAFT THE ENGINEER NOTICED CORROSION ON THE BEARING.  THE ECS PULLEY DRIVE SHAFT IS ALSO WORN SLIGHTLY UNDERSIZE.

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