How to create custom default cockpit cameras for existing aircraft

I want to create a mod using the SDK that overwrites the existing default cockpit cameras that airplane developers add to their planes. I am NOT talking about custom cockpit cameras that any user can create (the alt-# cameras), I am talking about the ctrl-# cameras.

There are some mods on that do this and it appears that in the SDK, you have to modify an existing aircraft. I just want to make sure that is the case before I get started.

I am familiar with using the SDK, but so far only to make airports and scenery improvements.

Are there any tutorials (YouTube or other) that someone can point me to?