Log File Reader for Grand Rapids Technologies Avionics

Reads binary LOG files into Matlab workspace and plots flight data

Grand Rapids Technologies (GRT) manufactures avionics systems for homebuilt aircraft. Their Electronic Flight Information System can write binary LOG files to a USB key during flight. GRT provides a Windows program to decode a subset of this data, the data from the Engine Information System, to a CSV file. I wanted to also extract the Attitude and Heading Reference System data, and bypass the CSV file, so I requested the formats from GRT and wrote this script. With their permission I offer it here to other users of GRT systems. Note that I am not affiliated with GRT in any way, other than as a customer.