I believe many airlines in the US and elsewhere use Beechcraft 1900 for fixed wing 19 seats passengers operation, but among aircrafts of this capacity range in the game now, this aircraft is now part of what is available.
Hope that when there are time it can be looked into and added to the game
I think the issue is that the type has been out of production since 2002 and all frames operating right now are in excess of 20 years old. So in a game world without second-hand aircraft, you won’t find this type.
But there are also servers with used aircraft
Ah, now I see what you mean. Looks like the 1900s are marked for testing only so they didn’t get rolled out to newer game worlds.. Need to check internally why this is the case.