I don't have the 310, but I do use the freeware PMS50 GTN750 in other aircraft. The paid version allows you to program a flight plan directly into the GTN750, but I find the World Map flight planner is all I need.
Tim Wright "The older I get, the better I was..."
Xbox Series X and a big smile! Gigabyte Aorus GA-Z270X-Gaming 7, Intel i5-7600k 3.80GHz, NZXT X62 Kraken, 32Gb Corsair DDR4 3000, 2x 2TB Samsung Hybrid SSD's, LG DVDRW, NVidia RTX2060 6Gb, CH Yoke & Pedals, Acer K272HL 27", Win 10 Pro x64
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