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SPIRAL
To descend in circles not unlike the coils of a spring. It is the opposite to a climbing turn and is a very simple manoeuver.
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TAIL SPIN
A condition resulting from loss of air speed. The air plane spins toward the earth, nose down—not fail down, as some think.
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SIDE SLIP
To descend in a banked position. The plane slips sideward faster than it travels forward. Side slips are often used in landing.
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SPLIT “S” TURN
Starting as a loop, the airplane makes a 180 degree turn in a vertical bank, coming out in opposite direction.
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FORWARD SLIP
To descend in a slightly banked position. In this manoeuver sideward slip and forward travel are approximately equal.
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BARREL ROLL
To make a revolution about the fore and aft axis of on airplane. This is a stunt frequently performed by military airplanes.
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LOOP INSIDE
To describe a vertical circle in an airplane, nose up and over. This is a military manoeuver and is considered a stunt.
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LOOP OUTSIDE
To describe a vertical circle, nose down and under. Only a few aviators have accomplished this. It is the most difficult of ail stunts.
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Courtesy Standard Oil Company of Indiana