Commission Implementing Regulation (EU) 2021/1874 of 25 October 2021 correcting the German language versions of Regulation (EU) 2018/395 laying down detailed rules for the operation of balloons as well as for the flight crew licensing for balloons, and of Implementing Regulation (EU) 2018/1976 laying down detailed rules for the operation of sailplanes as well as for the flight crew licensing for sailplanes