Lord Spandex Masher
Yes I agree in the real world I would indeed use everything I have and be done with it but in the virtual world a TRE is very likely to simply fail the other engine at the 5 minute point making for a rather unpleasant debrief hence the question so when that point arrives I have something to use in my defense if I was using assumed temp.
Punk
You are talking about the same problem i.e. FULL thrust has a 10 min (737) limit. I am talking about the assumed temperature scenario where you are already derated by virtue of the assumed temp method below MAX TOGA so do you need to worry about the 5 mins? it is a grey area I fear between the TOGA limit and the MCT limit, if you are between the 2 limits when using assumed temp then what is your time limit?