@ llmavll
Many thanks - its been a long time since Inhave used my Canadian ATPL and since then the CARS Approach Ban requirements have been updated.
CARS 705 Air Carrier can attempt an approach with 50% of the published visibility for Non-Precision, APV and SCDA non-precision approaches as long as the crew, aircraft, approach and setup (including a calculated planned descent angle) are met aling with an identified missed approach point.
Ref: Advisory Circular: COMMERCIAL AND BUSINESS AVIATION ADVISORY CIRCULAR
No. 0237 2006.09.08