Aircraft observed to overshoot the turn−on or to continue on a track which will penetrate the NTZ will be instructed to return to the correct final approach course immediately. Pilots will be instructed to contact the tower frequency prior to the point where NTZ monitoring begins. The final NTZ monitor controller has the capability of overriding the tower controller on the tower frequency. Aircraft will not be vectored to intercept the final approach course at an angle greater than thirty degrees. The assigned altitude must be maintained until intercepting the glide path, unless otherwise cleared by ATC. Aircraft position is tracked by final monitor controllers who will issue instructions to aircraft observed deviating from the assigned final approach course.Īs is the case for parallel runways separated by more than 9000', aircraft turning onto final approach will be provided 3 miles radar separation or a minimum of 1,000 feet vertical separation from aircraft joining the approach for the other runway. Staggered radar separation procedures are not utilised. Simultaneous independent approaches require NTZ radar monitoring to ensure that separation between aircraft on the adjacent parallel approach course is maintained. Simultaneous Independent Approach is a system permitting simultaneous ILS/RNAV/GLS approaches to parallel runways with centerlines separated by 4,300 to 9,000 feet utilising No Transgression Zone (NTZ) final monitor controllers. The three classes of parallel approaches are depicted in the diagram below with more detailed descriptions following.ĭiagonal Separation (Source: FAA AIM) Simultaneous (Parallel) Independent Approaches Pilots should follow recommended TCAS operating procedures in the event of a Resolution Advisory (RA). Traffic Collision Avoidance Systems (TCAS) provide an additional element of safety to parallel approach operations. Pilots must be alert to unusually long periods of silence or any unusual background sounds in their radio receiver as a stuck microphone could block the issuance of ATC instructions. Full and proper call signs should be used to prevent the inadvertent execution of clearances intended for another aircraft or confusion due to similar sounding call signs. Lengthy or unnecessary radio transmissions must be avoided. Strict radio discipline is mandatory during simultaneous parallel approach operations. Pilots should notify ATC immediately in the event of loss or degradation of aircraft or navigation systems. Precise final approach course tracking is critical to maintaining required separation. The close proximity of aircraft conducting approaches to adjacent runways demands strict and timely compliance with ATC assigned speeds, altitudes and headings.
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