Autofeather

Source: Wikipedia, the free encyclopedia.

Autofeather is a feature of the engines on some

feathered mode to reduce drag.[1]

The auto feather system also allows pilots to reduce the drag of the propellers during an engine failure, therefore, allowing the plane to glide for a longer period of time.

An automatic feathering system was first introduced on the Martin 4-0-4 aircraft, a piston engine airplane. The system was designed to automatically feather an engine that failed during takeoff or initial climb. It is not used during cruise.

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