Possibly true. However no other operator has ditched a perfectly serviceable ac in the ocean.
Really? This is
the first ever serviceable aircraft ditching the world has ever seen? Wow!
The planning error for this accident was one of omitting to cover a contingency. That means that TWO "cheese holes" had to line up - the lack of planning AND the contingency occurring. I am certain that many operations have taken place with "good outcomes" where the first occurred, and the second didn't - so your comment isn't a valid argument.
