Copyright © 2016  Grand Rapids Technologies, Inc.                      

Electronic Flight Instrumentation for Experimental Aircraft Since 1991

New for HX and HXr!  

Many pilots prefer to avoid the weight, bulk and expense of paper charts in favor of electronic charts. Now GRT pilots can have all the information of current paper charts with the extra situational awareness that only their EFIS can give– without the hassle of carrying the paper or an extra tablet.  

We’ve teamed up with Seattle Avionics to bring you ChartData™ for GRT Horizon HX and HXr. Yearly subscriptions are available for download from  

What makes GRT charts stand out from the rest?  

Geo-Referenced Charts

See more screenshots in the HXr and HX Screenshots Galleries.