By the way the blanket exemption in Canada allowing the use of MDA as DA (without adding 50ft) has been
extended for five years -- until
April 30, 2020.
Exemption from Paragraph 602.128(2)(b) of the Canadian Aviation Regulations - Transport Canada
This exemption authorizes pilots-in-command of IFR aircraft operated by holders of an air operator certificate or a private operator registration document to descend below the minimum descent altitude (MDA), when conducting a non-precision approach [...] following a stabilized constant descent angle (SCDA) non-precision approach.