On 1 June 2007, a replica (OK-BOS) built by Marcel Sezemský and members of Historická letka Republiky československé, completed its first flight from Mladá Boleslav in the Czech Republic.
On 1 June 2007, a replica (OK-BOS) built by Marcel Sezemský and members of Historická letka Republiky československé made its maiden voyage from Mladá Boleslav in the Czech Republic.