NSEU,
I was referring to the GE90 engine (where the rubbish applies). However you may be confusing two separate issues.
Just to clarify the overspeed protection message (GE90) EICAS ENG RPM LIMITED is a one line drill from the QRH and simply states "engine thrust is at the N1 or N2 red line limit". There will be no engine shutdown and the QRH does not ask you to shutdown.
Having checked the RR Trent QRH it is exactly the same. I think you may be confusing over speed with internal failure. The first line of your quote states the same protection for N1/2/3 with EEC adjusting fuel flow. The second part talks about internal failure dealt with by a separate OPU which is a rather different issue. I suspect EEC and OPU are two different things. We are talking only about EEC control on this thread.
As a good example have a look at the AIIB report into the incident with G-YMMP. A RR Trent machine.
As you say... ones mans rubbish !
Last edited by 8che; 27th August 2015 at 11:24.