Our thrust display shows the fixed derate, IE the vmcg/vmca protected full debated thrust if you will.
Interesting, didn't know that that was an option. But then, boeing is probably the only company that has a longer option list than Porsche...
Found something, however only for planes without the double derate option:
If an engine failure occurs during takeoff when using both the reduced thrust (ATM) and fixed derate methods:
- on airplanes with the double derate option, Boeing recommends that the thrust levers not to be advanced since the fixed derate limit is not displayed on engine or flight instruments. However, if operators have developed a procedure that makes the fixed derate immediately available to the crew, thrust may be advanced to the fixed limit only.
- on airplanes without the double derate option, the reference N1 bug shows the fixed derate limit. Thrust may be advanced to the fixed derate limit only.
We do have double derate on all our 737s, therefore never really bothered to read beyond the first bullet point.