mm_flynn
Glass? TIS? What do you mean?
I suspect you are talking about technological solutions. However the 402 is an old aircraft, not often kitted with such things. That does not mean it is unsafe, or that it should necessarily be fitted due to a rare and unfortunate occurence. I think too many people are trying to find a reason for a tragic accident and make it impossible to happen again, when such things have always occured and always will, and risks must be balanced by rewards. Maybe you agree, I am not sure from your post whether you think the technology should have been fitted or not.
Thoughts about how to make accidents less likely are good. Technical solutions can be very good too. Some days, though, an accident occurs and we should leave it at that, until we have more information. Even then we should consider the perspective of the accident, and its rarity.