Originally Posted by OBN
2.5% is all engine...make no mistake about that.
No it's not. The 2.5% is merely what your aircraft needs to achieve to miss the obstacles on the Missed Approach path. Nothing more, nothing less. If your aeroplane will not do that (eg with an engine out) then you have to either increase your minimum, lighten the weight so that you can make the 2.5% or, in some other way (eg company EOSID/MA procedure), get to the MSA without running into terra firma.
Let's face it, if all the engines are running, this discussion is purely hypothetical. Any modern aircraft will kill any of the requirements (even a 402).