Walter
let’s have several pages of airworthiness pulp in case some readers catch sight of these basic navigation issues!
If you have read the airworthiness "pulp", which most don't realise was fully accepted by Philips and MoD, you'd notice that it is inextricably linked with "navigation issues" because the airworthiness release stated that the entire navigation system was not to be replied upon in any way whatsoever as it only had a switch on clearance. I don't pretend to understand it all but I can read.
That doesn't mean you are wrong in your theory, but the "pulp" is factual and I think it a bit suspicious that these facts are continually ignored and suppressed. It isn't as if the facts contradict your theory in any way.