For flights outside domestic ATS route networks, position should be expressed in terms of latitude and longitude except when flying over named reporting points. For flights whose tracks are predominantly east or west, latitude should be expressed in degrees and minutes, longitude in degrees only. For flights whose tracks are predominantly north or south, latitude should be expressed in degrees only, longitude in degrees and minutes. However, it should be noted that when such minutes are zero then the position report may refer solely to degrees (as per examples below).
All times should be expressed in four digits giving both the hour and the minutes UTC.
Standard air/ground message types and formats are used within the NAT Region
The message types are shown below with examples:
Position, Swissair 100, RESNO at 1235, Flight Level 330, Estimating 56 North 020 West at 1310, 56 North 030 West Next
Request Clearance, American 123, 56 North 020 West at 1308, Flight Level 330, Estimating 56 North 030 West at 1340, 56 North 040 West Next. Request Flight Level 350
or if a position report is not required
Request Clearance, Speedbird 212, Request Flight Level 370
Revised Estimate, Speedbird 212, 57 North 040 West at 0305
You do not need to include waypoints after your Oceanic Exit Point in your position reports.
(Note: coordinates shall be spoken as "5 4 north 0 2 0 west". Times shall be spoken as "1 1 3 1", and not "eleven thirty one")