upper ATS route and the routes are oriented in the same
direction, the point of transition need not be inserted.
FOLLOWED IN EACH CASE
by the designator of the next ATS route segment, even if the same as the previous one,
OR by DCT, if the flight to the next point will be outside a designated route, unless both points are defined by geographical coordinates.
Flights outside designated ATS routes
INSERT points normally not more than 30 minutes flying time or 370 km (200 NM) apart, including each point at which a change of speed or level, a change of track, or a change of flight rules is planned.
Rules of the Air and Air Traffic Services (PANS-RAC)
OR, when required by appropriate ATS authority(ies),
DEFINE the track of flights operating predominantly in an east-west direction between 70°N and 70°S by reference to significant points formed by the intersections of half or whole degrees of latitude with meridians spaced at intervals of 10 degrees of longitude. For flights operating in areas outside those latitudes the tracks shall be defined by significant points formed by the intersection of parallels of latitude with meridians normally spaced at 20 degrees of longitude. The distance between significant points shall, as far as possible, not exceed one hour’s flight time. Additional significant points shall be established as deemed necessary.
For flights operating predominantly in a north-south direction, define tracks by reference to significant points formed by the intersection of whole degrees of longitude with specified parallels of latitude which are spaced at 5 degrees.
INSERT DCT between successive points unless both points are defined by geographical coordinates or by bearing and distance.
USE ONLY the conventions in (1) to (5) below and SEPARATE each sub-item by a space.
(1) ATS route (2 to 7 characters)
The coded designator assigned to the route or route segment including, where appropriate, the coded designator assigned to the standard departure or arrival route (e.g. BCN1, Bl, R14, UB10, KODAP2A).
Note.— Provisions for the application of route designators are contained in Annex 11, Appendix 1, whilst guidance material on the application of an RNP type to a specific route segment(s), route(s) or area is contained in the Manual on Required Navigation Performance (RNP) (Doc 9613).
(2) Significant point (2 to 11 characters)
The coded designator (2 to 5 characters) assigned to the point
(e.g. LN, MAY, HADDY), or, if no coded designator has been assigned, one of the following ways:
— Degrees only (7 characters):
2 figures describing latitude in degrees, followed by “N” (North) or “S” (South), followed by 3 figures describing longitude in degrees, followed by “E” (East) or “W” (West). Make up the correct number of figures, where necessary, by insertion of zeros, e.g. 46N078W.
— Degrees and minutes (11 characters):
4 figures describing latitude in degrees and tens and units of minutes followed by “N” (North) or “S” (South), followed by 5 figures describing longitude in degrees and tens and units of minutes, followed by “E” (East) or “W” (West). Make up the correct number of figures, where necessary, by insertion of zeros, e.g. 4620N07805W.
— Bearing and distance from a navigation aid:
The identification of the navigation aid (normally a VOR), in the form of 2 or 3 characters, THEN the bearing from the aid in the form of 3 figures giving degrees magnetic, THEN the distance from the aid in the form of 3 figures expressing nautical miles. Make up the correct number of figures, where necessary, by insertion of zeros — e.g. a point 180° magnetic at a distance of 40 nautical miles from VOR “DUB” should be expressed as DUB180040.
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