In a matter of less than three decades composite props have gone from interesting curiosities on homebuilt airplanes to widely accepted original equipment on new production airplanes and almost universally available aftermarket replacements for metal props on legacy birds.
While still more expensive than their aluminum counterparts, the advantages of composite propellers in terms of weight, efficiency, ability to hold a complex airfoil, longevity, reduced vibration and—in many cases—increased performance means that their popularity has steadily increased.