Final answer:
The vertical dimensions of the Canadian Minimum Navigation Performance Specifications Transition Area span from 29,000 feet mean sea level up to flight level 410 or approximately 41,000 feet.
Step-by-step explanation:
The Canadian Minimum Navigation Performance Specifications Transition Area (CMNPS Transition Area) is an airspace structure with defined vertical dimensions for aircraft navigation. Its vertical extent is from 29,000 feet mean sea level (MSL) up to and including flight level 410 (FL410), which is approximately 41,000 feet above standard mean sea level. Aircraft flying within this airspace must meet specific navigation performance specifications to ensure safety and efficiency in this high-traffic region. The CMNPS Transition Area is managed by Nav Canada, and it serves as a bridge between domestic airspace and the North Atlantic tracks where aircraft are subjected to stricter navigation performance standards.