Thanks Jet Jockey, I found the current Canadian exemption here
https://www2.tc.gc.ca/civilaviation/...cs/en/3278.htm
As you say, it appears to be re issued on an annual basis. Some initial and recurrent training required, ground school and in sim/aircraft, and most non prec approaches qualify.
For the USA operations it requires an Ops spec, M spec, or for Part 91 an LOA. C073 is the designation, info is here
https://fsims.faa.gov/PICResults.asp...egory=all~menu
And now navigate to
Volume 3, Chapter 18, Section 5, Paragraph 3-871, sub-paragraph “OPSPEC/MSPEC/LOA C073.
Note that for US ops, VNAV to a dh vice an MDA is not necessarily permitted for all Non precision approaches, read the requirements closely
Hawk