Originally Posted by
Pilot DAR
'Sounds to me that the MCAS system malfunctioning as it did on the two crash airplanes constituted an unsafe system operating condition. The MCAS failing to operate as intended might be an unknown to the pilots? (I don't know, I'm not 737 rated). If the MCAS was malfunctioning, and the pilots did not know it did, or did not know what the correct action would be, would that design requirement have been met?
The 737MAX's delivered to American Airlines were equipped with an optional MCAS failure warning system? (which sounds like it would meet the design requirement). Other airlines received 737MAX's which were not equipped with this optional warning system? Would those airplanes meet the design requirement?
He claims the same flaw is also in the 777x. If it is specific why would he omit the exact solution he had identified that is in accordance with the latest human factors practice?