Cream puff aka Clinton you know exactly what I'm saying. Your an ex casa solictor that means you work for casa you try to imply that I work for casa which I do not. I forgotten more than you know about piston engines and I won't be drawn back into that subject. Offer than to say experience shows me what happens.
On this subject here it's quite simple if it's a plug and play you don't require an EO. If you have an STC and it covers everything you may use it. If it dose not cover everything then an EO is required.
End of story.
Sorry if that dose not suit Jaba or Rats suit them but that's the facts as it stands at this point of time. 🙊🙉🙈