".Blueskies." wrote in message

...and that is what put that L1011 into the swamp down in Florida way back
when.

Well, technically, yes, but no one could ever definitively explain how the
change from Command mode to CWS was effected. The true culprits were the
design criteria in effect at the time 35+ years ago. In today's aircraft,
1) a substantial control input force (something on the order of 20lbs, iirc)
is required to disengage the autopilot, and 2) a loud tone sounds upon
autopilot disengagement from whatever source. These two design factors have
been incorporated at least in part because of the EA401 crash.