Part-OPS 1.430 Appx 1 suggests that to proceed below MDA/MDH you need sight of (effectively) the runway or lighting system and that general ground contact isn't sufficient unless specifically approved. That said, ISTR that sight of any part of the aerodrome or surroundings is sufficient for a circling approach, but I can't find such a provision in Part-OPS. Also not sure of the interaction between a limit specified in terms of height AAL/altitude AMSL and a lateral limit on the approach based on a spatial MAPt; that said the approach terminates at the MAPt, and my hunch is that proceeding beyond it, even at or above MDA, without the references specified in 1.430 is a bust (and, I have to concur with MJ, a bit of an idiotic thing to do).
Last edited by Anonystude; 17th Sep 2012 at 07:38.