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The Turn Coordinator is used to maintain a standard rate turn during flight; this is done by aligning the miniature airplane wings to the index marks when rolling the aircraft. The rudder is used to yaw the aircraft, which moves the ball left and right. Apply enough rudder pressure to maintain the ball in the center between the two lines.

The Turn Coordinator is the only instrument that is electrically powered by direct current (DC) and is labeled as so.

Instrument check

During the preflight visually check that the ball is centered or resting at the lowest point and there is fluid inside of inclinometer. During a turn while taxing the turn coordinator should indicate a turn in the direction of the tune being made, and the ball moves in the opposite direction.


​The Turn coordinator is electrically powered by direct current (DC).


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