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170 U.S. CIVIL AERONAUTICS AUTHORITY
neuvers designated by the instructor. For obvious reasons, acrobatics should not be performed at night.
He should be taught to recognize his position relative to other aircraft by the position and color of the position lights. If red and green position lights are seen, the airplane is seen head on; if a white light only is seen, the airplane is being seen from the rear; if red and white lights are seen, it is being viewed from a position to the left and rear; if green and white lights are seen, it is being viewed from the right and rear; if a red light is the only light seen, it is being viewed from a position to the left and slightly forward; and if a green light only is seen, it is being viewed from a position to the right and slightly forward.
The student should also be informed of the difference in flying conditions and visibility on very dark nights with an overcast, on normal nights with starlight, and by moonlight, since the illumination under each of these three conditions is different, and all are different from day flying. Consequently, judgment of objects, distance, altitude, and speed will vary.
The student pilot should under no circumstances be allowed to make a night flight during bad weather conditions, since such a flight almost invariably ends in disaster unless the pilot is competent to fly by instruments alone.