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148   U.S. CIVIL AERONAUTICS AUTHORITY

ing turns. There can be no choice between slipping and skidding during gliding turns, particularly when close to the ground. It is much safer, if one error or the other must be made, to slip in a steep turn than to skid in a flat turn. The student should be impressed

[[image]]
FIGURE 22.--The 180° overhead approach. Immediately after take-off the proper climb and flight path should be assumed in order to reach the correct altitude at the point shown.

that a perfect turn is the most efficient and will result in the maximum of performance. 

When the student has had enough practice to grasp the principles he may be advanced to the 360°'s. Perfection of technique should be attained by alternate practice of both 180°'s and 360°'s during solo periods.