The situation with the Bell 204, and later the Bell 205 got so out of control in Canada, that Transport Canada just threw their hands in the air and declared that they had no idea if anything was real or fake anymore, and that they would just accept everything as good so long as it stayed in Canada - a true conformity inspection would only be carried out upon application for an Export C of A. The FAA took a much more direct approach, and investigated every Bell 204, and revoked the C of A of any aircraft that could be clearly identified as having a direct UH-1 airframe heritage. This now left the entire aircraft and parts in a serious dilemma, as they were no longer eligible for installation on an aircraft as they had an unknown configuration having been flown on a now uncertificated product, neither a Standard Category nor Restricted Category aircraft, neither Bell 204 or UH-1. A number of people got seriously burned in that episode! There are plenty of great conforming aircraft around, but because of the accepted unknowns agreed by TCCA, many would never go through the Export process for fear of being detected.
https://www.tc.gc.ca/en/services/avi...ns/msi-36.html