Add a button to the UI you have in flight that shows your current aircraft's stats with one click.
It could look something like the pictures attached below. (You guys could vote in the number emojis 1 or 2 which design is better) It would be a quick and easy way to see stats on normal aircraft, and especially easy to see stats in exclusive vehicles that do not exist in the standard database.
For people with event aircraft or other spawned-in aircraft, this could save a lot of time since you can see your max altitude without ending your flight.
(Excuse my horrible editing skills)


