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原文传递 Precision Departure Release Capability (PDRC): NASA to FAA Research Transition

题名：	Precision Departure Release Capability (PDRC): NASA to FAA Research Transition
作者：	Engelland, S.; Davis, T. J.
关键词：	Takeoff##Air transportation##Airspace##Air traffic control##Air traffic controllers(Personnel)##Precision##Airports##Scheduling##Arrivals##Verbal communication##Decision support systems##
摘要：	After takeoff, aircraft must merge into en route (Center) airspace traffic flows which may be subject to constraints that create localized demand-capacity imbalances. When demand exceeds capacity, Traffic Management Coordinators (TMCs) and Frontline Managers (FLMs) often use tactical departure scheduling to manage the flow of departures into the constrained Center traffic flow. Tactical departure scheduling usually involves use of a Call for Release (CFR) procedure wherein the Tower must call the Center to coordinate a release time prior to allowing the flight to depart. In present-day operations release times are computed by the Center Traffic Management Advisor (TMA) decision support tool based upon manual estimates of aircraft ready time verbally communicated from the Tower to the Center. The TMA-computed release time is verbally communicated from the Center back to the Tower where it is relayed to the Local controller as a release window that is typically three minutes wide. The Local controller will manage the departure to meet the coordinated release time window. Manual ready time prediction and verbal release time coordination are labor intensive and prone to inaccuracy. Also, use of release time windows adds uncertainty to the tactical departure process. Analysis of more than one million flights from January 2011 indicates that a significant number of tactically scheduled aircraft missed their en route slot due to ready time prediction uncertainty.
总页数：	33
报告类型：	科技报告