I understand that in an incident like this one might well perish from the crash alone. But one might also perish from an ensuing fuel fire. I know that Robertson Fuel Systems, for one, makes fuel tanks that are more crash resistant. The Robertson tanks are available for at least some civil aircraft; I can’t tell from their website if the AW 169 is one of those. Was it available for this aircraft? Anyone here have experience or knowledge as to this type of system and its effect? If you were wealthy and owned a helicopter, would you specify such?