De Havilland Canada's DHC-2 Beaver

Canada Post explained its selection of the iconic DHC-2 Beaver this way:
The Beaver is considered the best bush plane ever built and was named one of Canada’s top 10 engineering achievements of the 20th century. The all-metal plane’s short takeoff and landing capability - along with its ability to be fitted with wheels, floats or skis - made the Beaver ideal for accessing and connecting remote areas of the country.