tecpilot said, "With a steadier MGB fixation i believe the ship would have done an overturn. And in this case... may be we could only look to an outburned a/c."
While I fully disagree with that observation ("I am glad the aircraft came apart, it is better that way.....") it does show a strength of the BK-117 C2 because it DOES meet the latest crashworthy fuel design requirements, so it would have a much lower probability of burning in a post crash fire.
Please understand my post, it is to use this crash to illustrate that the exact design requirements of a particular machine contribute to its safety, and that later designs, meeting newer requirements are safer. Beware of clever name changes, and look at the underlying data to judge.