Between flying several 'rust-removing' flights with a CFII (it's been 9 years), I completed the Flying the Garmin GTN 650/750 Series! course (except the last 'maintaining' block). Between my current series of flights with the CFII towards preparing for an IPC, I completed the Flying the Garmin GTN 650/750 Series! course again. I feel comfortable and enabled with the GTN 650 in the T-41C I am flying. Thanks King Schools!
Garmin GTN 650/750 Pilot Course