Near-term solution for efficient merging of aircraft on uncoordinated terminal RNAV routes

In this paper, we extend spacing of performance based arrivals on converging routes (SPACR) to include a potential use of required time of arrival (RTA) and present an operational concept using it in conjunction with lateral offsets and converging runway display aid (CRDA). We present analytic results related to ground computation of RTA and matching that with the airborne computation. Results of human-in-the-loop experiments related to using SPACR to manage the final merge using only CRDA are reported.