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Interfacility boundary adjustment.
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  • NTL Classification:
    NTL-AVIATION-Air Traffic Control ; NTL-AVIATION-Aviation Human Factors ; NTL-AVIATION-Aviation Planning and Policy ;
  • Abstract:
    The objective of the study was to examine the impact of inter-facility dynamic resectorization on Air Traffic Control Specialists’

    (ATCSs’) performance, workload, communication, situational awareness, and control strategies. As a preliminary investigation, the

    scope of the study was limited to lateral boundary adjustments (in contrast to vertical adjustments) and specific traffic situations that

    should benefit the most from dynamic resectorization. The researchers selected a heavy traffic situation and shifting weather patterns

    as scenarios for this investigation. The approach was to pre-define regions of airspace that could be allocated to one Air Route Traffic

    Control Center (ARTCC) or the other depending upon the traffic situation. This approach represented a simple method of dynamic

    resectorization that could be implemented using current air traffic control (ATC) equipment. Twelve full performance level controllers

    participated in the study over a 6-week period. We evaluated their performance using objective and subjective measures. We assessed

    controller workload using the National Aeronautics and Space Administration Task Load Index and the Air Traffic Workload Input

    Technique. We measured ATCSs’ situation awareness using self-ratings on a numeric scale. In addition, controllers completed

    questionnaires after each scenario and at the end of the study. The results indicated that dynamic resectorization did not interfere with

    ATCS performance. Overall, there were very few separation losses in the study. However, the results indicated slightly fewer

    separation losses for dynamic resectorization in the heavy traffic scenarios, although this trend was not statistically reliable. Finally,

    the results indicated slightly lower NASA-TLX workload ratings in dynamic resectorization scenarios. However, dynamic

    resectorization did not reduce controller situation awareness. In fact, controller ratings of situation awareness were higher when

    operating dynamic resectorization scenarios in both high density traffic and shifting weather situations.

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