They have something like this in world of tanks.
You have 2 minutes to reconnect and get back into the game and if you do you can leave off where you discoed.
But in WOT your tank is still in the game and still killable. Youre basically a sitting duck and it's lucky to come back to an undamaged tank.
Have it so that when you disconnect, you go into auto pilot and your plane is an afk sitting duck untill you come back to it. And give it a 2 minute timer untill it counts as a death. If you are killed in this period, when you reconnect, you start at the tower.
If youre already in auto pilot, like auto climb, you'll just continue in auto climb or shift X or whatever.