Order 7110.65P, Air Traffic Control, with changes

7110.65P CHG 1 8/5/04or(a) Operate within MNPS airspace; or(b) Are in transit to or from MNPS airspace;(c) Operate for part of their flight withinMNPS airspace but are cleared to operate immediatelyabove or below such airspace for a portion of theirflight.b. 90 NM or 1 and 1 / 2 degrees latitude betweenaircraft operating:1. Within WATRS;2. Between the U.S., Canada, and Bermuda;3. West of 55 West between the U.S., Canada,or Bermuda and points in the Caribbean ICAORegion.c. 120 NM or 2 degrees latitude between aircraftnot covered by subparas a or b above.NOTE−Tracks may be spaced with reference to their difference inlatitude, provided that in any interval of 10 degrees oflongitude the change in latitude of at least one of the tracksdoes not exceed 3 degrees when operating south of 58North.8−7−5. PROCEDURES FOR WEATHERDEVIATIONS IN NORTH ATLANTIC (NAT)AIRSPACEAircraft must request an ATC clearance to deviate.Since aircraft will not fly into known areas ofweather, weather deviation requests should takepriority over routine requests. If there is no traffic inthe horizontal dimension, ATC shall issue clearanceto deviate from track; or if there is conflicting trafficin the horizontal dimension, ATC separates aircraftby establishing vertical separation. If there isconflicting traffic and ATC is unable to establish therequired separation, ATC shall:a. Advise the pilot unable to issue clearance forrequested deviation;b. Advise the pilot of conflicting traffic; andc. Request pilot’s intentions.PHRASEOLOGY−UNABLE (requested deviation), TRAFFIC IS (call sign,position, altitude, direction), ADVISE INTENTIONS.NOTE−1. The pilot will advise ATC of intentions by the mostexpeditious means available.2. In the event that pilot/controller communicationscannot be established or a revised ATC clearance is notavailable, pilots will follow the procedures outlined in theRegional Supplementary Procedures, ICAO Doc. 7030.8−7−2North Atlantic ICAO Region