"Despite this litany of deadly crashes and even though the IAF has in recent years received the more advanced Blackhawk helicopter, the air force has yet to find a serious replacement for the Yasur." The clear implication of this statement and the tone of the whole article is that the fact that there have been CH-53 crashes means there's something wrong with the helicopter. No facts are presented to show that any of the accidents mentioned were due to mechanical malfunctions or anything other than human error. Some may well have been caused by a mechanical problem, but there are no facts presented here other than the accidents themselves. Some clearly appear to have been caused by factors other than the aircraft. Also, human error - such as faulty maintenance - can cause mechanical problems as well. Considering how long these helicopters have been in the air and how many hours they've flown, I think the few crashes, tragic though they are, are a testimony to an outstandingly reliable aircraft, Israel's ingenuity in extending its working life, and the skill of the men who've flown it.
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from the article: Yasur helicopter: A history of splendid service - and deadly collisions