The percentage of flights that would be maintained on a 1:40, 1:50, again, would be company-wide. For example, if WestJet chose to go to 1:50, they would have to invoke their whole fleet to transfer to 1:50. In other words, all their flights would be operated on 1:50.
If Air Canada chose to stay on the 1:40, then their flights would be operating, all their flights...except for the ones that are currently exempt under the 1:50 rule, which are the RJ and the Dash 8, which are exempt.