# SDR HNAA2017092000319

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 19, 2017
- Submitted: September 20, 2017
- Operation: Air carrier
- Aircraft: [N336](https://openairdocs.org/aircraft/N336), registered now
- Make and model: Dhav DHC8311
- Aircraft serial: 336
- Aircraft time: 56,070 hours, 66,442 cycles
- System (JASC): [6123 · Propeller Feathering/Reversing](https://openairdocs.org/jasc/6123)
- Part: Selector Switch
- Condition: Failed
- Location: Autofeather Sys
- Stage of operation: TO
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/HNAA2017092000319

## Discrepancy

AUTOFEATHER DID NOT ARM AT 80 KNOTS. REATTEMPTED TAKEOFF AND AUTOFEATHER ARMED.  R & R THE AUTOFEATHER SELECTOR SWITCH IAW 61-21. RAN ENGINES IAW SRT MANUAL.  PERFORMED AUTOFEATHER STATIC CHECKED MULTIPLE TIMES.  AUTOFEATHER ARMS AT 60 PERCENT TORQUE AND REMAINS THROUGHOUT THE CHECK.  OPS CHECKED GOOD. OK FOR SERVICE.

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