How trim tabs work. Trim tabs are small surfaces connected to the trailing edge of larger surfaces that can be used to counteract aerodynamic forces without the pilot applying a control force. Along with pitch shown here, there are tabs for roll and yaw.

How trim tabs work. Trim tabs are small surfaces connected to the trailing edge of larger surfaces that can be used to counteract aerodynamic forces without the pilot applying a control force. Along with pitch shown here, there are tabs for roll and yaw.