I think that, in purely technical terms an 'approach', in CAT 1 or better, could be considered to be complete either 1) at the transition to visual reference or 2) at the point of go-round. However, during low vis ops, any approach is part of 'the system' that involves traffic spacing on approach and protection of the ILS signal environment around the runway. I would therefore suggest that under low vis ops your approach is not complete until you either carry out a go round, or until you have cleared the signal protection area around the runway after landing.
Last edited by 777fly; 26th Dec 2012 at 22:13.