Originally Posted by
skydiver69
Dave I was just wondering how much has to change for something to be classed as non standard as both Caravans have cargo doors which can be opened in flight as well as extra steps and a rail? Would those be item which Cessna certified when they designed the Caravan?
Yes, they are certified, but not by Cessna - bear in mind that certification includes not only the Type Certificate but also any relevant STCs.
Here's an STC for the 208 para mods (there may be others):