Guidance concerning Air Navigation in and above the NAT MNPSA
Requirements for Flight Plans on NAM/CAR Route Structure Insert speed in terms of Mach number for turbo-jet aircraft, and TAS in knots for all other aircraft. The speed is to be specified at the commencement point of the NAM/CAR route structure.
Insert the flight level for oceanic entry point specified at the commencement point of the NAM/CAR route structure.
Insert the route of flight described in terms of NAM/CAR ATS route identifier(s).
Note: Each point at which either a change in speed and/or level is requested must be specified and followed in each case by the next route segment expressed by the appropriate ATS route identifier(s), or as a named waypoint.
Flights Outside Designated ATS Routes
Insert DCT between successive points unless both points are defined by geographical co-ordinates or by bearing and distance.
USE ONLY the conventions in (1) to (5) below and SEPARATE each sub-item by a SPACE.
ATS Route (2 to 7 characters)
The coded designator assigned to the route or route segment (e.g. BCN1, B1, R14, UB10, KODAP2A)
Significant Point (2 to 11 characters) The coded designator (2 to 5 characters) assigned to the point (e.g. LN, MAY, HADDY)
If no coded designator has been assigned, one of the following ways:
Degrees only (7 characters)
Two figures describing latitude in degrees followed by “N” (North) or “S” (South), followed by three figures describing longitude in degrees followed by “E” (East) or “W” (West). Where necessary make up the correct number of figures by insertion of zeros (e.g. 46N050W).
Degrees and minutes (11 characters)
Four figures describing latitude in degrees and tens and units of minutes followed by “N” (North) or “S” (South), followed by five figures describing longitude in degrees and tens and units of minutes followed by “E” (East) or “W” (West). Where necessary make up the correct number of figures by insertion of zeros (e.g. 4620N05005W).
It is often observed that a mixture of the above is used e.g- 46N05461W, 5455N030W. This is not an acceptable format.
Bearing and distance from a navigation aid (9 characters)
The identification of the navigation aid (normally a VOR) in the form of two or three characters, followed by the bearing from the aid in the form of three figures giving degrees magnetic, followed by the distance from the aid in the form of three figures expressing nautical miles.
NAT Doc 007