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| RADIO INSTRUMENTS
CHAPTER THREE
CHANGE OVER POINTS
Change Over Points (COPs) are prescribed for all federal airways and jet routes. COPs are
established for preventing loss of navigation signal or to prevent adjacent channel interference.
At a COP, the TACAN should be changed from the station behind to the station ahead. The
COP is not depicted on charts if it is located midway between the navigation facilities. When the
COP is not located at the midway point, aeronautical charts will depict the COP location and
give the mileage to the NAVAIDs. Compliance with COP procedures assures that aircraft
navigation equipment will be tuned to the NAVAID assuring maximum accuracy in defining the
route. Note that, in the absence of information to the contrary, this is the nearest NAVAID.
FALMOUTH
(FLM CH117)
TO POCKET
CITY
Figure 3-2 Intersection Navigation
INTERSECTIONS
Navigation via jet routes often requires utilization of intersections as turnpoints. Refer to
Figure 3-2. Picture a clearance from VHP via J24 to BIGXX intersection, then J29 to ROD.
RADIO INSTRUMENTS
3-23
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