# SDR CA150331012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 26, 2015
- Submitted: August 5, 2015
- Operation: General aviation
- Make and model: Aerosp ATR 72-212
- Registry model: [Aerosp ATR 72-212](https://openairdocs.org/model/aerospatiale-atr-72-212) (OpenAirDocs)
- Aircraft time: 26,545 hours
- Engine: Pwa PW127
- Propeller: Hamstd 247F1
- System (JASC): [6123 · Propeller Feathering/Reversing](https://openairdocs.org/jasc/6123)
- Part: Autofeather Sys
- Condition: Malfunctioned
- Location: Propeller
- Stage of operation: CR
- How discovered: O
- Nature of condition: F
- Precautionary procedure: E, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA150331012

## Discrepancy

(CAN) DURING FLIGHT NR 2 PROPELLER EXPERIENCED UNCOMMANDED FEATHER.  THE CREW SHUTDOWN THE ENGINE AND DECLARED AN EMERGENCY.  NR 2 MULTI-FUNCTION COMPUTER AND AUTOFEATHER UNIT WERE REPLACED AND SENT TO ATR MFG FOR ANALYSIS.  ENGINE TORQUE SENSORS ALSO REPLACED. GROUND RUNS HAVE BEEN COMPLETED SATISFACTORY.

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