With this airplane in msfs2024: Patey Aviation Draco X
I flew at 300 000 feet altitude and I can still climb, steer, go down or up. Engine works fine.
Max altitude says 30 000 feet. But on 40 000 feet altitude I can also still climb and steer easily.
Can this plane actually do this? Or is it a bug or not yet fully developed aircraft? Or is the physics in msfs 2024 still in development?
Great! I’ll be able to go for a ride in space with my Draco and see the Earth from very high altitude. I have to hurry before this is fixed. 
It sounds like a bug to me. I’d suggest creating a new topic in the Bug Reporting Hub and let the dev teams figure out if it is a core-code / Draco-X or physics issue.
A rather HIGH LEVEL bug too… 
I tried to duplicate this just for fun, and couldn’t. Had trouble climbing above 53,000.
I tried last winter, barely could get it to little bit over 50 000 feet.
Typo in OP’s post and they meant 30,000 feet?
I used slew mode, is that why the aircraft didn’t break?
Parachute also seems to climb at 90 thousand altitude no issues.
Video example
Yeah, you can slew any aircraft up to the upper atmosphere. Some will fall like a rock, some won’t. Expect the unexpected when forcing an aircraft way above its service ceiling. You’re intentionally breaking the programming of the flight model.
