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FLIGHT INSTRUCTOR'S MANUAL 147 maneuvering possible while reaching the desired spot from the particular altitude, and also teaches the student to estimate the effects of drift in attempts to reach the key location. It will also teach him to judge the proper method of dissipation or conservation of altitude [[image]] FIGURE 21. in order to reach the key position at a sufficient and proper altitude for executing the familiar 90° approach and turn for a landing. The student will soon learn the important factor that a pilot must always maneuver with a view to reaching his landing objective during the entire approach. This point should be stressed. The banks used during the 180°'s are seldom less than 45° and are frequently much steeper. For this reason proper gliding turn technique must be stressed, and a new estimate of the effects of such turns on the gliding distance of the airplane learned. This will often develop a tendency towards flat skidding turns in an attempt to conserve altitude, due to a realization of the relatively excessive loss necessary to maintain normal speed throughout such steep glid-