Replies to post #2618 on Boeing Company (BA)

[Porgie Tirebiter]

There is nothing inherently wrong with using an active pitch stability system, as many high performance aircraft do. It's just that previous versions of the 737 did not require one, and so didn't have one. So this is not new, unexplored territory in aircraft engineering.

But Boeing engineers should not have piggybacked the MCAS pitch angle input with the left Angle of Attack vane which also fed pitch input to the stall warning system. They introduced the possibility of a single failure causing two simultaneous and unrelated issues for the crews to cope with.

The MAX will fly again, and when it does the MCAS is going to have multiple layers of redundancy in regard to it's action with limitations on it's authority. Like it should have had from the start.