Question ...
my background to date has been limited to other types, last of these being A320, my experience of the 73/75 are limited to random sessions with CAE (when the sim was free and the instructor was dual rated).
There have been a number of incidents/accidents where the aircraft was apparently in an auto-flight mode, trimming back to reduce speed, and at some point full power was required, the thrust line / pitch couple kicked in and resulted in a loss of available pitch down authority whilst the stab trim took time to readjust to the demand.
Out of interest, is this switch in any way related to the mitigation of this issue ?