Probably bug. Try to re-add it to the factory.

contains forbidden block

Oh it can land. You need to check your weight beforehand to ensure you aren't too heavy for the Planets g-force, and if necessary upgrade the thrust. That is all. Basically the same as with any large ship.

The main issue is this is a large transport wit a lot of room. If you pack it full of stuff you need a lot of thrust to go onto planets. You also need a lot of thrust to fly full speed. Both isn't possible with the CPU available at C9, so I had to decide whether I wanted it to be able to fly full speed or wanted it to be able to land.

I went with the speed and left room to upgrade the lift thrust, should one want to invest Aux. Cores.

That said this is a rather old build, I am not sure how well it is optimised under the current patch. I think the thrusters got buffed at some point, so the lift might not be an issue anymore. Maybe still is though.

So basically the ship is not meant for landing..

Same as with the older Atlantis, when you want to go on planets you have to upgrade the thrust first. Or limit yourself to low-g planets and moons.

The work is not worth it. The ship lacks thrust. He doesn't leave the ground. Tested on net weight. Engines that do not pull from below.

Great work on this one, love that you've also built CVs to fit inside of it. I did have to remove a scanner from this though as there were two of them.

Awesome ship.