Yes, there was problem with sensors. Yes, airlines and manufacturers were doing something to solve it but they were not in a great hurry, after all, there were 32 crews that coped with the problem successfully
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That is depressingly similar to the statistics and response to the known O ring issue on the Space Shuttle solid boosters.
A back up safety system that has prevented disaster 30 times does not prove that the systme is safe.
Personally a 3% chance of buying the farm if a known fault occurrs is a disturbing thought.