The steel 111 is a modified version of the steel 101. The steel 101 being kinda slow but easy to fly just makes it a good plane for pilot training and private floghts and deliveries and also good for new pilots but the steel 111 is more challenging to fly makeing it more fun for all kinds of users. The steel 111 is also much faster with an engine build under the tail rudder wich also makes it able to flip over nose first on the ground and it also turns off the runway easily so when you start up the engines remember to use the rudder to not go over the runway but over correcting with the rudder will lead to the aircraft going sideways down the runway and will eventualy flip over. And if the engines begins to burn you can detach the engines of both the steel 101 and steel 111 to make less damage to the airplane but remember first shut down or kill the throttle of the engines so you wont crash. Both the steel 101 and steel 111 is made by maximilian staalby aviation.