B777 EEC
Hi
So if i understood it correctly for each environmental input the EEC computes the max thrust rating which if exceeded it will result in an overboost of the engine and corresponding to the full forward thrust lever position - is the overboost shown on the gauges?
The overspeed whereas is a mechanical limitation and it is a fixed value - 97% of N1 will always be for instance 9700rpm's - and the max speed will varies based on the thrust settings - TO, CLB, MCT and so on.
So what does the red line shows? Overspeed or overboost?
Many thanks
Baobab