# SDR CA011205006

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 15, 2001
- Submitted: February 5, 2002
- Operation: General aviation
- Make and model: Dhav DHC8311
- Aircraft time: 23,815 hours
- Engine: Pwa PW123
- Propeller: Hamstd 14SF15
- System (JASC): [6123 · Propeller Feathering/Reversing](https://openairdocs.org/jasc/6123)
- Part: Control Unit
- Condition: Malfunctioned
- Location: Nr 2 Engine
- Stage of operation: CL
- How discovered: O
- Nature of condition: E, J
- Precautionary procedure: H, A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/CA011205006

## Discrepancy

(CAN) PRIOR TO TAKE-OFF,  AUTOFEATHER ARMING BAULKED,  ACTIVATED ON RE-SELECTION.  ON TAKE-OFF,  AFTER GEAR UP SELECTION, NR 2 ENGINE INITIATED UNCOMMANDED AUTOFEATHER (TORQUE 125 PERCENT PLUS). CREW DE-SELECTED AUTOFEATHER WITHIN FOUR SECONDS, TORQUE RETURNED TO NORMAL. AIRCRAFT RETURNED TO BASE, AND ENGINE / PROP CHANGE CARRIED OUT. ENGINE TORQUE PROBE, HARNESS AND TSCU SHIPPED TO OEM FOR ANALYSIS,

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