ROC at the crossover altitude
This is an old ATPL (A) question which has raised its head again (why I don't know-its pretty pointless) so I'm looking for an input from a current flier.
The question asks what happens to the ROC at the crossover altitude when transiting from constant IAS to constant mach climb?
Now I believe that there is a momentary pitch up at the transition giving an instantaneous increase in ROC which almost immediately decreases to a value slightly less than the ROC at the constant IAS.
Can some kind aviator please verify this and let me have some numbers and aircraft type.
Much appreciated
elcol.