Originally Posted by
GordonR_Cape
I already answered that question somewhere yesterday (can't find the link).
1.
AFAIK the certification requirements and mission objectives for military and passenger aircraft are rather different.
2. Allowing pilot input to override MCAS would invalidate specific certification requirements.
3. Several recent crashes (both Airbus and Boeing) indicate that pilots can do unexpected things in a loss-of-control situation (night/IMC), and assuming that pilot control inputs are always correct is definitely not a good idea.
4. Military pilots have been trained to deal with AOA, and to interpret AOA disagree. It is clear than many civilian pilots do not use AOA, and have not been trained to deal with AOA disagree.
To be clear, the KC-46, basic aircraft, control system, A/P, etc were certified to Part 25, not military specs. Only the military pieces were certified by the military. But the basic design architecture of the 767 and 737 are decades apart and the amendment level of Part 25 which applied (certification basis) are quite different from the 737. I don't know for sure how the architectures of the flight control system, sensor data flows, trim system of the two models are alike, but expect significant differences with respect to how the MCAS operates. We'll see.