I honestly didn't even think of that.
In the meantime, I came up with a convoluted, yet working, way of doing it in game with Zeus. Basically made a makeshift runway about 1000m in the air out of buildings, used Achilles addon for Zeus to make plane invincible, move plane up there, then get yourself up there and fly it off the top.
Convoluted, but works well if you're already in a Zeus mission and friendlies request special air support and you want to amaze them.