The crash site is a fair distance beyond the rim of the canyon, and it's not an area where turbulence and downdrafts tend to be a problem. Talking to people who were flying that day the weather moved in exceptionally fast, routes went from moderately open to completely closed in a couple of minutes. What's particularly hard to take is that Paul wasn't the type to take stupid risks, just a couple of days earlier he was one of the first to be cancelling flights for bad weather.
The vast majority of pilots who crashed are not stupid...They just got caught..... If you read full accident report, fixed wing or helicopters, the vast majority of pilots involved had experience and were good pilots. Experience is not a guarantee that you won't do any mistake because many experienced pilots do mistakes. It is just reality. And experience help you to push boundaries......As pilots, we deal with many different situations, luck is sometimes your savor, we all had very close call.