How do you do pirouettes? (Flightsim)

Look at the title. There is your question. 

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I think it's when you go vertical, stall and flip back to nose down to pull up to level off.
You can do tail-slides but it takes some practice and a LOT of skill. If you read my aerobatics tutorial you'll see that it is possible. Spins weren't meant to be possible in FS8 and 9 until some clever eggs came up with a solution and certain aircraft can do them (it'll say in the readme)