Condolences to all involved in this tragic and awful accident;also justifiable praise and admiration to all rescue services who arrive on the scene.As a pilot for the obvious 737 operator in and out of CVT I have been dreading this news for a long time.
I am a keen supporter of general aviation and currently fly privately as well as professionally but whatever the 'rights and wrongs' this is an accident that should never have been allowed to happen.There is a similar setup at DSA and the mix of IFR and VFR traffic is potentially catastrophic. I would have no interest in speculation as to how the system broke down but I would suspect that frequent users of CVT airspace certainly would not have predicted this but would have feared an event such as this or indeed one involving a 737.
The current system is at fault and there are many potential solutions not least mandatory TCAS for all aircraft.Very sad for all involved.