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561 Airport Road
Middlebury, VT 05753
Welcome to Green Mountain Avionics
In 2011 owner Bill Hanf founded Green Mountain Avionics at the Middlebury State Airport to provide quality avionics installation, troubleshooting, inspection and repairs.

Under Bill's supervision, a number of talented full-time technicians work on a range of aircraft including fixed wing and helicopter. Each installation is a custom job, and Bill's team brings the expertise to treat them as such. 

Contact Us
As avionics technology is always changing, Green Mountain Avionics is committed to educating clients about the latest in regulations and available technology. To this end, we offer clients the opportunity to learn the latest systems in our company demonstrator C-172.

To learn more about our services, please browse the Our Services and Our Manufacturers pages. If you are interested in a consultation, please contact us!
The demonstrator airplane is equipped with top of the line avionics including a G500 with SVT, GTN750, GNC255A, GTX327, GMA350, GDL88 ADS-B and a panel docked AERA 796 - all of which are components that GMA installs.