Criss:
I must be missing something here but I can't understand how you CAN'T fire a Lear for take-off with a C182 on final!!
Don't want to start a tit-for-tat here but what I'd like to know is by what standard you were able to play vertical separation with the B747 on the go- around with the C182 being stepped up underneath?? ie a leap-frog manoeuvre?? I can see that, given the right circumstances, the B747 will outclimb the C182 but how the heck to you say you had established a separation standard. The question here is whether we're wanting to make them miss (which is probably pretty easy after all natural scatter and airmanship does it most of the time) or we're actually applying and achieving a prescribed separation standard.
Maybe we're getting a bit too technical with the possibilities / probabilities / scenarious instead of sticking to the original question which I perceived as fairly simple and straightforward.
Eric- I hope you have been able to gain something from all the answers posted. Just goes to show how controllers can easily get tied up with the "paralysis of analysis sometimes" in their discussions- it really isn't as hard as it seems
Over & out