Originally Posted by
hikoushi
Do you have a reference for “climb modes only valid in the climb detent”?. Because that is not what the aircraft does. The acceleration altitude is what drives the climb mode transition from MAN TOGA / FLEX to OP CLB / CLB. The throttle position is not part of it. For example today departed (aircraft, not simulator, new and well-updated software) with some turbulence and a very heavy airplane. Acceleration altitude came and OP CLB engaged, along with the LVR CLB indication. Still in MAN FLEX XX with A/THR blue. Waited until after pitching the nose down and establishing a positive acceleration trend, which took quite a while. Only at that point brought the thrust levers to CLB causing THR CLB and A/THR white to hit the FMA. Already in OP CLB prior to thrust lever movement.
SRS switching to OP CLB and giving the LVR CLB indication has absolutely nothing to do with thrust lever position. The opposite (OP CLB to SRS) is however fully dependent on you hitting the TOGA detent, even for just a brief moment.
SRS will change to CLB/OP CLB at ACC ALT even in wind shear. LVR CLB will only flash when aircraft reaches THR RED ALT. It has nothing to do with SRS. If LVR CLB is flashing and SRS has changed to CLB then it will provide protection from overspeed by pitching up unless ALT* engages then there's no protection.