Tdracer:
1) Pilot reaction time to a trim issue was assumed to be 4 seconds - Boeing has now acknowledged that was too optimistic and 15 seconds is being used going forward.
I’m afraid I can’t agree to classify this event as just a”trim issue” that’s like calling the collision between the Titanic and an iceberg an ice issue.
The MCAS failure included multiple alarms unrelated to trim position and the behavior of the trim system was not identifiable as a known failure mode.
To put that another way, how would you react if someone fitted a Tesla like automatic steering system to your old F100 without telling you? How can you identify a system failure if you have no knowledge of the existence of the system itself? That is the logical iceberg that Boeing founders on.
It must be terrible living through all this in the Seattle area.