overun You instruct on an aircraft that you don`t know intimately ?
Genghis I imagine that most instructors occasionally have to teach on aeroplanes they've only got 100 or so hours on
I would say that every FI I know, has instructed on an aircraft they don't know intimately. The rule used to be that you had to have 5 hours on type before instructing on it, it's not even that nowadays.
Why should a FI have "intimate" knowledge of what they're instructing on? Is that intimacy with type or actual aircraft? It depends what you're doing, who it's with and your individual experience. I've got a couple of thousand recent hours on Warriors/Archers and dozens (but years ago) on a slab-wing Cherokee, one of my ex-students has bought themselves a Cherokee 180, what do I need to do to achieve the apparently desired intimacy, before I conduct a dual revalidation flight for their class rating with them in their own aircraft? NOTHING.