The traffic separation scheme (TSS) in the approach to Boston, MA, consists of three parts: Two precautionary areas and a TSS. The specific areas in the TSS in the approach to Boston, MA, are described in §§ 167.76 and 167.77 . The geographic coordinates in §§ 167.76 and 167.77 are defined using North American Datum 1983 (NAD 83), which is equivalent to WGS 1984 datum.
33 C.F.R. §167.75