A #memory-aid for which order to change throttle and propeller controls in some [[high performance]] aircraft. **Power Up**: Make a seven from the bottom up. Start from cowl flaps (open), up to prop (forward), then throttle (up). **Power Down**: Make a seven from the top down. Start with throttle (back), prop (back), cowl flaps (as needed). ``` Throttle -- Prop | | | Cowl Flaps ```