I present here a tune up auf the NVA Tu-124 with two panels one has also NAS and DISS system. The existing simulations of the Tu-124 had a serious bug with its NI-50 navigation system and lacked VOR radios. After a work of nearly one year I present here my solution to these problems. Thanks to the original authors and how to install can be found in the file “Installation and thanksgiving” which comes with this download.