Aircraft Owners And Pilots Association
421 Aviation Way Frederick United States
With hundreds of thousands of members, AOPA is the largest, most influential general aviation association in the world. AOPA has achieved its prominent position through effective advocacy, enlightened leadership, technical competence, and hard work. Providing member services that range from representation at the federal, state, and local levels to legal services, advice, and other assistance, AOPA has built a service organization that far exceeds any other in the aviation community.