Interval Management (IM) is an FAA Next-Gen Automatic Dependent Surveillance – Broadcast (ADS-B) In application designed to decrease the variability in spacing between aircraft, thereby increasing the efficiency of the National Airspace System (NAS). One application within IM is Paired Approach (PA). In a PA operation, the lead aircraft and trail aircraft are both established on final approach to dependent parallel runways with runway centerline spacing less than 2500 feet. The trail aircraft follows speed guidance from the IM Avionics to achieve and maintain a desired spacing behind the lead aircraft. PA operations are expected to require a new separation standard that allows the aircraft to be spaced more closely than current dependent parallel separation standards. The behavior of an airborne collision avoidance system, such as TCAS II or ACAS Xa, must be considered during a new operation such as PA, because the aircraft are so closely spaced. This analysis quantified TAs and RAs using TCAS II Change 7.1 and ACAS Xa software with simulated IM PA operations. The results show no RAs using either TCAS II Change 7.1 or ACAS Xa, negligible TAs using TCAS II Change 7.1, and acceptable numbers of TAs using ACAS Xa software during simulated PA operations.


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    Title :

    TCAS II and ACAS Xa Traffic and Resolution Advisories During Interval Management Paired Approach Operations


    Contributors:


    Publication date :

    2020-10-11


    Size :

    1371835 byte





    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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