# SDR CA100521002

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: March 17, 2010
- Submitted: January 4, 2011
- Operation: Air carrier
- Engine: Pwa PW123
- System (JASC): [6123 · Propeller Feathering/Reversing](https://openairdocs.org/jasc/6123)
- Part: Autofeather Sys
- Condition: Uncontrollable
- Location: Propeller
- Stage of operation: CL
- How discovered: O
- Nature of condition: F
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA100521002

## Discrepancy

(CAN)  DURING TAKEOFF, AN UNCOMMANDED AUTOFEATHER OCCURRED.  PILOT MADE AND EMERGENCY LANDING AT DEPARTURE AIRPORT.  FDR IS UNDER REVIEW BY MANUFACTURER.

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