Originally Posted by
yoko1
First of all, MCAS doesn’t run for 11 seconds - ever.
With respect, no one can possibly know that. We know that the maximum per-activation runtime per design is 9.26 seconds, but we don't have nearly enough data to state with certainty that it "never" runs for longer than that. When I say "we," I mean to include all of humanity, because no one, in all of humanity, has enough data or enough experience with MCAS to credibly assert what it "never" or "always" does.
We do, of course, have significant evidence that MCAS has behaved in unexpected and very undesirable fashion in at least a couple of instances. I suspect that, before those flights, many of the relatively-few people who knew that MCAS existed and what it was intended to do would have said it would never "do that."