AMC1 SECTION II

GENERAL Controlled, advisory and uncontrolled ATS routes, with the exception of standard arrival and departure routes should be identified as follows:

(a)The basic designator should consist of one letter of the alphabet followed by a number from 1 to 999. The selection of the letter should be made from those listed hereunder:

(1)‘A’, ‘B’, ‘G’, ‘R’ for routes which form part of the regional networks of ATS routes and are not area navigation routes;

(2)‘L’, ‘M’, ‘N’, ‘P’ for area navigation routes which form part of the regional networks of ATS routes;

(3)‘H’, ‘J’, ‘V’, ‘W’ for routes which do not form part of the regional networks of ATS routes and are not area navigation routes; and

(4)‘Q’, ‘T’, ‘Y’, ‘Z’ for area navigation routes which do not form part of the regional networks of ATS routes.

(b)The ATS route designator should consist of a basic designator supplemented, if necessary, by:

(1)one prefix; where applicable, one supplementary letter may be added as a prefix to the basic designator in accordance with the following:

(i)‘K’ to indicate a low-level route established for use primarily by helicopters;

(ii)‘U’ to indicate that the route or portion thereof is established in the upper airspace; and

(iii)‘S’ to indicate a route established exclusively for use by supersonic aircraft during acceleration, deceleration and while in supersonic flight; and

(2)one additional letter; when prescribed by the competent authority or on the basis of regional air navigation agreements, a supplementary letter may be added after the basic designator of the ATS route in question in order to indicate the type of service provided in accordance with the following:

(i)‘F’ to indicate that on the route or portion thereof only advisory service is provided; and

(ii)‘G’ to indicate that on the route or portion thereof only flight information service is provided.

(c)The number of characters required to compose the designator should not exceed six.

(d)The number of characters required to compose the designator should, whenever possible, be kept to a maximum of five.