Lesson 4f - Boxing the Wake
The lesson will allow the student to demonstrate manuvering behind the tow plane to different established positiong with regard to the tow plane's wake. The maneuvers will be done in a fashion that is described by the FAA's Practical Test Standards: "Maneuvers the glider, while on tow, slightly outside the towplane’s wake in a rectangular, box-like pattern."
There is no rush for this procedure. It is more important to take your time and get to all of the points on tow in a controlled and precise manner. As a matter of convention and habit, Skyline Instructors and students usually combine the tasks of the Hi-Low Tow transition with the boxing of the wake with the following procedure:
The maneuver can be in either a clockwise or counter-clockwise direction.
NOTE: During the practical test the examiner may ask for you to perform the maneuvers of "High-Low Tow Transition" separately from "Boxing the Wake." In this circumstance, boxing the wake does NOT include transitioning through the wake at the beginning of the maneuver. The candidate would maneuver around the wake without ever making contact with the tow plane's wake.
If the box-wake maneuver is being performed separately from the Hi-Low Tow Transition, execute the following procedure. The following example is for clockwise direction. Either direction is possible.
Generally speaking, the low tow position behind the Pawnee is indicated when the horizontal stabilizer is lined up with the tow pilot's rear view mirror. Behind the Husky, the low tow position is achieved when the elevator is lined up with the wing. For both tow planes, the glider pilot knows that he has gone far enough to the side when the tail wheel and main wheels appear to line up.
The candidate must:
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