Originally Posted by
Three Lima Charlie
Yes, it is possible to put the propeller into "feather" pitch with the prop (RPM) lever on the console. But the feather button in most aircraft also triggers several other actions to isolate the engine at the firewall by closing valves to shut off fuel, oil, hydraulic fluid flow, disconnect electrical connections and arm the fire extinguisher bottle (if equipped). Some propellers, once feathered, a pin drops into place and will require maintenance to reset the pin and manually move the blade back to a normal pitch position.
That's a fancy feather button. In DC-3s, Super Threes, recip Convairs and DC-6s (the only recip transports I’ve flown) all those other actions besides feathering the prop were separate controls. And in none of them would pulling the prop control all the way back drive the prop to feather.