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The aerobatics SIG (also known as the New Zealand Radio Control Aerobatics Association NZRCAA) looks after and promotes both pattern (precision aerobatics) and IMAC (scale aerobatics) in New Zealand. While both involve flying aerobatics, the schedules and type of model required to fly at a top level are quite different. Pattern requires models of less than 2 meters wingspan and length, weighing less than 5kg. These typically do not look like full size aircraft, with the designs optimized over the years to perform the maneuvers required with great precision. IMAC on the other hand is best flown with a larger model, which must resemble a full size aerobatic aircraft except for basic (the introductory class) where any model goes!


There are three pattern classes flown in NZ. Sportsman is for those starting out (a 40 size low wing model is ideal) - his is flown to a local set of New Zealand rules. Then you can progress to advanced and F3A which are flown to an international set of rules. The sportsman schedule is not difficult, but is a challenge to fly well. Come and have a go!


IMAC has several classes (basic, sportsman, intermediate, advanced, and unlimited). You start out with basic or sportsman, and then progress as your skills develop. This class is flown to an international set of rules, available from the links below.




Hamish Galloway

Phone 021 443690


Rules for Pattern (Precision Aerobatics)

New Zealand RC Pattern Rules

Sportsman Rules

FAI rule book for Advanced and F3A, please visit and scroll down to Sporting Code, section 4, F3 Aerobatics to get the current version.


Rules for IMAC (Scale Aerobatics)

Visit to download the latest schedules, rule book, and judging guides.



NZRCAA website (link =