Originally Posted by
Speed_Trim_Fail
Doing acceptance flights was a very valuable tool in this regard - regarding one thrust lever at altitude and then back up to watch spool up times, one simply left the AP in to handle it, which on the 737 didn’t have a rudder channel.
The 737 can have a rudder channel. But even then it is only active during approach below 1.500ft and during go around until another lateral mode is engaged. And most airlines don't order it, although it allows CAT IIIb approaches.