Originally Posted by
EXDAC
Perhaps I misunderstood you but, to be clear, AD have never applied to E/AB aircraft. AD can apply to certificated components, such as an engine, used in E/AB. This is one of the reasons that E/AB builders may chose an experimental engine rather than a type certificated one.
Once I took delivery of my factory assist E/AB and was issued my repairman certificate I became the only person with any responsibility for its airworthiness.