The Canadian Aviation Historical Society (CAHS) is a national organization dedicated to the celebration and documentation of Canada's flying heritage. Members receive the CAHS Journal, Canada's premier aviation history magazine, regular newsletters, and an invitation to participate in the local activities of nine regional chapters.
CAHS Ottawa Chapter meetings are held on the last Thursday of the month, from September through May (except December), in the Mauril Bélanger Theatre of the Canada Aviation and Space Museum (Rockcliffe Airport). Meetings feature guest speakers, films, slide shows, book signings, and visits to local aviation events and facilities, such as those at the museum. Speakers present both first-person accounts and researched papers covering all historical periods and aspects of Canadian aviation.