the aircraft of the CT series has been developed since the early 1990s by flight design. The CT 180 which came on the market in 1997 was the beginning. Since then more than 1400 CT’s have been sold. Used are engines of the Rotax 912 series. The MC (metal concept) and the CTLS HL with enlarged areas and more powerful engine (Rotax 914) came in the year 2010 to.