Keep in mind that for some time now Trans Canada have 'adopted 'the JAA standard in certifying new types.All Canadair(RJ's etc)are certified under JAA rules...
Well, actually that's not correct either:
Model CL-600-2B19 - FAR Part 25 including amendments 25-1 through 25-62
Model CL-600-2C10 - FAR Part 25 including amendments 25-1 through 25-86
Model CL-600-2D15 & CL-600-2D24 - AWM Chapter 525, Change 525-7
Type Certificate Data Sheet A-131
Now, it is true that for the most part, the transport category design rules are harmonized between the FAA, TCCA, DAC-CTA and EASA.
PS - EASA assumed responsibility for aircraft type certification from the JAA in 2003 and published their own design rules, called Certification Specifications.