Order 7110.65P, Air Traffic Control, with changes

2/19/047110.65P(b) Clear aircraft navigating on NDB facilitiesin accordance with para 2−5−2, NAVAID Terms.b. Different NAVAIDs: Separate aircraft usingdifferent navigation aids by assigning tracks so thattheir protected airspace does not overlap.(See FIG 8−4−12.)FIG 8−4−12Track SeparationDifferent NAVAIDsc. Dead Reckoning (DR):1. Consider separation to exist between aircraftestablished on tracks that diverge by at least45 degrees when one aircraft is at least 15 miles fromthe point of intersection of the tracks. This point maybe determined either visually or by reference to aground−based navigation aid. (See FIG 8−4−13.)FIG 8−4−13Track SeparationDead ReckoningLateral Separation8−4−5