Academy of Model Aeronautics (AMA)
The Academy of Model Aeronautics is a world-class association of modelers organized for the purpose of promotion, development, education, advancement and safeguard modeling activities.

International Miniature Aircraft Association (IMAA)
The International Miniature Aircraft Association, Inc. (IMAA) is formed for the purpose of fostering and advancing the operation of large scale radio controlled model aircraft in a setting where informality and safety of operations prevail.

RCUniverse.com
Forum for all aspects of R/C modeling.