Correct they haven't. Even though this article is about this specific accident, I still stand by my comment that it is unacceptable for any pilot or company fly a perfectly good airplane with paying passengers on board into the side of a mountain. Ever! It really is a pretty simple concept. If weather is below or marginal you file IFR. If it's VFR you fly at an altitude plus 500 feet above the highest terrain in that area. If you can't do either because of lack of ratings or equipment you don't go. Pretty simple but many don't seem to get it.