Originally Posted by
gums
Salute!
@Hans My point is that the 'bus and several FBW planes have extremely simple control yokes/wheels/sticks and nothing close to the 737 "feel" system and the "speed stability" trim inputs to "help" the pilots and then recently make things worse with MCAS.
I wonder how much of this was present in the original plane. Any 737 dinosaurs here?
Gums sends..
Hi Gums,
This old dinosaur flew B707 then 737-200 for over 10 years. 707 stab trim runaway could continue despite control column application in the opposite direction.
737 design overcame this - application of control column force would prevent stab trim running in the opposite direction. (Both types handled beautifully).
737 Max's MCAS allows stab trim to run in opposite direction to control column force (by design) - but is apparently unknown to some pilots. Hence the aircraft can continue to trim against the pilot - and can do so until both stab trim switches on centre pedestal are turned off.
See
https://theaircurrent.com/aviation-s...em-mcas-jt610/