# SDR AC2A201309170001

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 16, 2013
- Submitted: September 17, 2013
- Operation: Air carrier
- Aircraft: [N639MM](https://openairdocs.org/aircraft/N639MM), registered now
- Make and model: Agusta AW139
- Registry model: [Agusta AW139](https://openairdocs.org/model/agustawestland-philadelphia-aw139) (OpenAirDocs)
- Aircraft serial: 41216
- Aircraft time: 3,467 hours
- Engine: Pwc PT6C67C
- Engine time: 4,998 hours
- System (JASC): [7712 · Engine BMEP/Torque Indicating](https://openairdocs.org/jasc/7712)
- Part: Torque Sensor
- Condition: Damaged
- Location: Engine
- Stage of operation: TX
- How discovered: O
- Nature of condition: N
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AC2A201309170001

## Discrepancy

ENGINE TORQUE MISCOMPARE CAS MESSAGE ILLUMINATED DURING GROUND RUN.  FOUND TORQUE SENSORS DAMAGED FROM CONTACT WITH ROTATING COMPONENT.

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