Aero Linx: Airborne Public Safety Association (APSA) The Airborne Public Safety Association is a 501(c)(3) non-profit, educational, individual membership organization, founded in 1968 to support and encourage the use of aircraft in public safety. Currently over 3,000 members strong from the international to the local level. We provide networking systems, educational seminars, and product expositions that members find invaluable.