Let's get some noise control on these small planes before we all go
crazy.

It exists for Pawnee PA-25 B,C,D towplanes (with Lycoming O-540). Just
use the FAA approved "towplane prop" instead of the cropduster prop!

http://www.milehighgliding.com/color...ucts.htm#props

1 day STC retrofit, 1 month delivery ARO, taking orders for Spring now.

Mile High Gliding, Inc.
STC holder and a USA dealer for
Hoffmann Propeller GmbH & Co. KG