M2002, all other regulations except Canucks have implemented APB. It's the whole purpose of a ABP to give the PIC the chance to assess the dynamic of the situation. The idea of a AB is that an approach can be started regardless of WX, approaching the ABP a go around must be performed in case there isn't a improvement. Once beyond however it's a matter of getting to see at MDA/DA whether a landing can or can't be accomplished safely. ON CAT III B there's nothing to see anyways thus it becomes a redundancy matter. Speculations about emergencies in LVO, might bear grounds as much as the odds of probability. Ask yourself a question would you rather land having an engine fire on CAT IIIB on short final on go around? I think you know the answer.
