not sure what you're talking about but since the union's own website says they make $45 an hour after 9 years i'd say thats a pretty official number.

http://www.accomponent.ca/About_the_Union/News/Nobody's_Waitress_by_Leslie_Shriver/

Starting salary in CUPE, which represents most Canadian flight attendants, is about $20 an hour, rising on a nine-year scale to $45 an hour.