I tried to disable the Jetways with a Radius of 3.0 Meters but the Static Jetways (STRG+J) stayed.How cant they be disabled?
They cannot be easily disabled because, as explained in the GSX manual, they are made as part of the terminal mesh, not as separate objects. You can try removing this file:
Addon Manager\Fsdreamteam\ZurichX\scenery\LSZH_JT_TM.BGL
Keep in mind that you'll have to remove it again after each Live Update, since it will be reinstated by the updater.