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» Current Poll
Are you planning to fly indoors with us this year?
No, I prefer the great outdoors even in Winter - 15.00%
3 Votes
Yes, fixed wing only, no supper - 5.00%
1 Vote
Yes, heli only, no supper - 25.00%
5 Votes
Yes, fixed-wing and heli, no supper - 5.00%
1 Vote
Yes, fixed-wing only, with supper - 20.00%
4 Votes
Yes, heli only, with supper - 0%
0 Votes
Yes, fixed-wing and heli, with supper - 30.00%
6 Votes
Total Votes: 20
You may not vote on this poll.
» IMAC Scale Aerobatics


International Miniature Aerobatic Club (IMAC) is a non-profit organization devoted to flying scale aerobatic model aircraft. IMAC is the main governing body responsible for hosting precision aerobatic contests with hundreds of pilots across the United States and Eastern Canada. The organization was founded in 1974.

IMAC contests are segregated into five class levels with an optional sixth class at some events. With the exception of the Basic class, pilots are given unknown programs the day of the competition that can only be attempted once. If a contestant wins five contests in a season, they are required to advance to the next higher class at the beginning of the new season.


Sequences within each class are described using Aresti notation. This provides a standard method of documenting aerobatic maneuvers permitted within each class level for both pilots and judges. Pilots are judged on the quality and precision of their flying skills.

Class Sequences by Year


IMAC in Canada

For more information on IMAC in Canada, please visit the Scale Aerobatics website:

IMAC Sequence Videos (2010)

Flight simulator videos of the 2010 IMAC sequences:

[Basic] [Sportsman] [Intermediate] [Advanced] [Unlimited]

IMAC Sequence Videos (2008)

Flight simulator videos of the 2008 IMAC sequences can be found on Flying Giants.

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