Raisbeck officials say they expect an FAA supplemental type certificate "very soon," and the company already has orders from two separate firms.
The new propellers are made from carbon fiber, and they are about 47 pounds lighter than the four-blade, metal propellers they replace.
Company officials said single-engine climb performance increases between five and seven percent with the new propellers.
The new props are expected to sell for about $140,000 per pair, Raisbeck officials said.
AOPA Pilot Editor at Large
AOPA Pilot Editor at Large Dave Hirschman joined AOPA in 2008. He has an airline transport pilot certificate and instrument and multiengine flight instructor certificates. Dave flies vintage, historical, and Experimental airplanes and specializes in tailwheel and aerobatic instruction.