8-8-4. LATERAL SEPARATION

8-8-4. LATERAL SEPARATION

In accordance with Chapter 8, Offshore/Oceanic Procedures, Section 4, Lateral Separation, apply the following:

1. 23 NM to approved aircraft (at a minimum, RNP 4, RCP 240, and RSP 180) operating within airspace designated for 23 NM lateral separation when direct controller/pilot communications via voice or Controller Pilot Data Link Communications (CPDLC), and the required ADS-C contracts are maintained and monitored by an automated flight data processor (e.g., ATOP).
2. 50 NM between Required Navigation Performance (RNP 4 or RNP 10) approved aircraft that:
   1. Operate in the New York Oceanic CTA/FIR; or
   2. Operate in the San Juan Oceanic CTA/FIR; or
   3. Operate in the Houston Oceanic CTA/FIR; or
   4. Operate in the Atlantic or Gulf of Mexico portion of the Miami CTA/FIR.

   NOTE: This reduced lateral separation must not be used if track-keeping capability of the aircraft has been reduced for any reason.

3. 60 NM between:
   1. Supersonic aircraft operating above FL 275 within the New York oceanic CTA/FIR.
   2. Supersonic aircraft operating at or above FL 450 not covered in subparagraph 1 above.
   3. Aircraft which have MNPS or NAT HLA authorization and which:
      1. (a) Operate within NTA HLA; or
      2. (b) Are in transit to or from NAT HLA; or
      3. (c) Operate for part of their flight within, above, or below NAT HLA.

   NOTE: This reduced lateral separation must not be used if track-keeping capability of the aircraft has been reduced for any reason.

4. 90 NM between aircraft not approved for RNP 4 or RNP 10 and which:
   1. Operate within WATRS; or
   2. Operate west of 55° West between the U.S., Canada, or Bermuda and points in the Caribbean ICAO Region.
5. 100 NM between aircraft operating west of 55° West not covered by subparagraphs a, c or d above.
6. 120 NM between aircraft operating east of 55° West.