you seem to ignore a lot of things, you speak without knowing !!.Turkish systems are designed for the F-16. It would be impossible to integrate Turkish indigenous systems on a totally different fighter jet where we have zero experience in. Its not something like plug and play and you are way to go..
Our current fleet is formed by F-16's. These jets are be able to operate thanks to the maintenence system. Spare parts are a crucial element of this. Wihtout spare parts you cant keep your fleet operating. You really think that the U.S will deliver spare parts for the F-16's if Turkey make such a move?
Its just unrealistic and way too difficult to change a complete fleet. Ismail Demir is bluffing.
the Turks are 'largely' capable of carrying out their F-16s themselves in operational condition (MCO). It was Turkish Aerospace Industries which, through a technology transfer from Lockheed-Martin, had upgraded the Turkish fighter to the Block 50 165 F-16 standard. This know-how is particularly useful in the event of a diplomatic quarrel with the supplier country.
This is a huge advantage. From the moment the United States gave the Turks the means to make the MCO (maintenance in operational conditions ) of their aircraft.
"If the process [purchase and upgrade of the F-16] does not bring results, Turkey will not be left without an alternative. If necessary, the subject of the Su-35 and Su-57 can be opened at any time," Turkish Defense Minister Ismail Demir insisted on October 18.