Wrath,
I have asked that exact question of the one or two others who support Courtney's version and he like them will simply refuse to answer. He will spin and twist in the wind however he WILL NOT answer the question as to do so simply destroys his and their so obviously flawed argument.
You asked him
"Do you know with absolutely no doubt whatsoever what caused ZD576 to crash on the Mull all those years ago?"
The ONLY answer he can give is NO as there simply is no irrefutable proof as to what exactly happened. He cannot possibly answer YES as even he would not be so stupid to try and convince us that there is absolutely no doubt whatsoever.
So to reiterate Wrath's question Courtney, or anyone else for that matter
Do you know with absolutely no doubt whatsoever what caused ZD576 to crash on the Mull all those years ago?