Many thanks for the above comments.
I understand that CLB derate on some Boeing FMS is defaulted to the TO derate, but that alternative CLB settings can be manually selected.
This is probably logical for most operations as aircraft weight is a major factor in the choice of both TO & CLB derate. However, TO derate is also highly dependent on the available runway, so mismatches could occur.
QUESTIONS
1) Do Boeing crews generally accept the CLB derate defaulted to the TO derate? Or are other criteria used?
2) If so, what happens to the CLB derate if reduced TO thrust is selected using ATM?
My understanding of Airbus FMS is that the CLB derate is set independently to TO derate/FLEX.
QUESTION
3) Are TOW bands used to set default CLB derate levels, with min R/C criteria? Or, are default CLB derates applied to routes, but with option for changing due to min R/C or operational issues?