Garmin 296/496 question: US or Atlantic database?
Please help me to understand. Lets say, i want to buy a 296 or 496 and use it in Europe and USA. I am going to buy for example Atlantic database version to fly in Europe and once i wanna fly in USA, so how i can upgrade to have both Atlantic and America Database? Is it possible to have both database or even 3 of them (US, Atlantic and Pacific) in same device? How it is possible to upgrade in that case? And for which reason i need Garmin Datacard?