There is an important distinction between the two categories of membership:
Operator Members, when they join HeliOffshore, become (in UK law) legal member/owners of the Association. As such, they are governed by a document, Articles of Incorporation of HeliOffshore, and have reserved authority for determination of the business of the Association and certain reserved rights such as voting, directorships, financial oversight and so forth.
Affiliate Members, when they join HeliOffshore, agree to abide by the HeliOffshore Code of Conduct. They do not become legal members/owners of the Association but are entitled to certain rights and privileges to act within the Association and participate in safety activities.