TCAS RA
To seek opinions: This could be reflected by a/c type or company or personal technique.
TCAS RA. Some years ago on B733 CL the QRH was disconnect A/P if necessary and follow RA guidance. I say if necessary because the RA could have been "maintain V/S". This could be either in climb/descent/level flight. Note A/T stayed engaged.
B738 NG. The manoeuvre now is to disengage A/T also. When a Boeing pilot was asked about this the answer was "to be consistent with the manual flight = manual thrust philosophy."
It was suggested that at high level, especially, this introduced a threat. You get a "CLIMB RA", haul back on the elevator and forget to add enough thrust. No need to go into space, but I suspect some might be over zealous at the thought of near death, hence forgetting thrust. Speed decays to very fast to stick-shaker.
You get a "Descend RA". Same action except it has happened that in one event pax & C/A were pinned to the ceiling. Once again you forget the thrust and smash the Mmo.
Or after the death defying descent you level off, check your heart rate and blood pressure, but forget to add power for level flight.
All the above errors I've seen performed in the sim by experienced crews. If leaving A/T engaged was a good idea on B733 CL is it really an improvement in safety to disconnect it now in Boeing SOP's? What is other types guidance and do airlines differ? I feel there should be more thinking to this than just a simple philosophy about manual flight.