The first CTLS PtF (permit-to-fly) airplane has been updated into an EASA Restricted Type Certificate airplane. The German aviation authority (LBA) has just awarded it a new certificate of airworthiness.   “The total upgrade included changes to make the aircraft compliant to the applicable Type Design and the same comprehensive checks which we do with a newly produced aircraft. Moreover, the conversion can be used to upgrade the aircraft with the latest optional items like electric trim or LED landing lights, said Flight Design CEO, Daniel Guenther. The conformity inspection and update were much more of an effort than we all estimated. Even after receiving an EASA Form 52 for the airplane, a lot of detail work was required.” The Flight Design team thanks the authorities involved in this and especially the great cooperation of the customer. We are sure that the next conversions will be quicker and looking forward to getting many more during the next months.