The Traffic Separation Scheme in the approaches to Los Angeles-Long Beach consists of three parts: a Precautionary Area, a Western Approach, and a Southern Approach. The specific areas in the approaches to Los Angeles-Long Beach are described in Secs. 167.501 through 167.503. The geographic coordinates in Secs. 167.501 through 167.503 are defined using North American Datum 1983 (NAD 83). [USCG-2000-7695, 65 FR 53913, Sept. 6, 2000]