The traffic separation scheme in the approaches to Portland, ME, consists of three parts: A precautionary area, an Eastern approach and a Southern approach. The specific areas in the traffic separation scheme in the approaches to Portland, ME, are described in §§ 167.51 through 167.53.
Code of Federal Regulations
[USCG-2010-0718, 75 FR 77533, Dec. 13, 2010]