IO540
Have another look at the report. It seems less than 50% of the infringement cases had a GPS. Now you may argue that all the other aircraft that never infringe CAS are fitted with GPS, but I suggest that this figure is likely to be fairly representative of the GA fleet as a whole (since the report indicates that half of the infringements occur in club aircraft). Indeed 40% occur in owned or syndicate aircraft. It would be interesting to know what proportion of the GA fleet is owned/syndicated and also if the average kit fit is better than the average club can. If as I would imagine the owned aircraft is more likely to be fitted with a GPS, why are they the subject of so many busts?
Moreover, the report suggests that high work loads are a significant common factor in infringment cases. If GPS was reducing work load, then the number of infringements would be going down, not up.
I agree that of course proper GPS usage (in terms of proper installation, maintainance of database and training) would go a long way to improving the situation. Sadly this day is a long way off. But I maintain that traditional navigational techniques are sufficient to keep one away from CAS, it is just a shame that people are not being taught it properly (or are not wanting to be taught it).