Thanks very much for the responses. The conflicting information i have read is probably down to differences between types of aircraft. The information in the 747 maintenance training manual states: "Go around mode is engaged when there are these conditions - 1, autothrottle armed. 2, airplane in the air. 3, glideslope captured or flaps not zero. 4, thrust limit mode not T/O.
So if i'm understanding this correctly, if all 4 conditions above are not met, go around can not be initiated?