The International Aerobatic Club is a division of the EAA. It is one of the largest aerobatic clubs in the world.

In the modeling world, the equivalent is the IMAC aka. International Miniature Aerobatic Club ...

The IAC sponsors events in sport aerobatics all over the world.

Team USA competes in Advanced and Unlimited Aerobatics.

This is my fictitious CS for the Citabria Pro ...