Light bringer, I found a little bug with your game...
If you are in the air and put your laptop and/or computer to sleep it continues your air time so when you finally turn on the computer you get all the time you spent on sleep mode into air time, I found that out by moving classes and getting 3k air time on my second run xD
I hope you find this bit of information helpful
 "Learn to Fly 3"){kind=icon}
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lol thanks I think it should be fixed in the new version!