All altitudes must be verified by an accepted altitude determination method and be recorded by the launch organizer. Only single motor flights are permitted, and staging is not allowed. A Model Rocketry Altitude Record Form must filled out and sent to CAR/ACF HQ for a record attempt to be evaluated.

All altitudes must be verified by an accepted altitude determination method and be recorded by the launch organizer. Any impulse is allowed along with clustering and staging. A Model Rocketry Altitude Record Form must filled out and sent to CAR/ACF HQ for a record attempt to be evaluated.

The Model Rocket Unlimited Altitude Class is simply for the highest altitude attained by a Model Rocket (A-G impulse) rocket in Canada. All attempts must be at a CAR/ACF sponsored launch verified by an accepted altitude determination method by a commercially manufactured altimeter and be recorded by the launch organizer. Any impulse is allowed along with clustering and staging. A Model Rocketry Altitude Record Form must filled out and sent to CAR/ACF HQ for a record attempt to be evaluated.