For example, when your elevator or stabilator moves up, the antiservo tab moves in the same direction. It deploys in the same direction as the control surface, making the movement of the control surface more difficult and requires more force applied to the controls by the pilot. The servo trim tab is used on popular aircraft like cessna's 172 skyhawk Trim tabs are a secondary flight control surface that helps you reduce (or eliminate) the need to place pressure on the yoke or rudder to keep your airplane flying straight and level. Antiservo tabs are another form of control surface modification that works similarly to balance tabs but with a slightly different purpose These tabs move in the same direction as the primary control surface (such as the elevator or stabilator).
With this force acting against the movement of the stabilator, it reduces the sensitivity to pilot input. An antiservo tab is a movable control surface attached to the trailing edge of a stabilator that moves in the same direction as the primary control This is used to make the stabilator less sensitive to minor control inputs, thus making it easier to control the aircraft.
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