CAP710 was interesting.
CAP493 is common sense. i.e. you go on a heading, you're no longer on the SID as I stated earlier (post #35) in response to one of the other poster's 'what if, what if' scenarios. Steps are defined by a fix not a distance, as you've said in post #37, for a reason. A fix has a lateral element to it. A distance merely prescribes a circle around a DME.
You seem not to understand what I've asked in the opening post. Enhanced Mode S may be introducing conflicts in the overall system. I'm not asking for ATC to "fly my aircraft". With over 3000 hours of hand flown IFR, I'm aware not all aircraft have an Alt preselect. They also, therefore, don't create the conflict caused by Enhanced Mode S, which is the main subject of the thread. Would a smiley face help here? How about "
"? PPRuNe could be such a valuable resource for peers to discuss issues were it not for the flight sim brigade.
Thanks to those who've been constructive; this has probably run its course now.