You can edit them in the non-locked threads (though in Your case it probably means only FD Scale Aircraft 10).
As for the rest - I can only suggest opening a separate thread titled for example "FD Scale works by Naixoterk - July 2013-January 2015". If in a weeks time Majhost won't be working again I'm going to do it myself for my works (well, probably will do it anyway), in addition to updating links in Polish Wings, East German Airlines, FD Scale Aircraft 10 etc. (some other links I already changed)
And later I will have to change all these links in the master lists...