An airway designator should contain the following numbers and letters?
COMPOSITION OF DESIGNATOR
The ATS route designator shall consist of a basic designator supplemented, if necessary, by:
(1) One prefix; and
(2) One additional letter.
- The number of characters required to compose the designator shall not exceed six characters.
- The number of characters required to compose the designator should, whenever possible, be kept to a maximum of five characters.
- The basic designator shall consist of one letter of the alphabet followed by a number from 1 to 999.
Selection of the letter shall be made from those listed hereunder:
| A, B, G, R | Routes which form part of the regional networks of ATS routes and are not area navigation routes. |
| L, M, N, P | Area navigation routes which form part of the regional networks of ATS routes. |
| H, J, V, W | Routes which do not form part of the regional networks of ATS routes and are not area navigation routes. |
| Q, T, Y, Z | Area navigation routes which do not form part of the regional networks of ATS routes. |
In addition to the basic designator, where applicable, one supplementary letter shall be added as a prefix to the basic designator in accordance with the following:
(a) F to indicate that on the route or portion thereof advisory service only is provided;
(b) G to indicate that on the route or portion thereof flight information service only is provided;
(c) K to indicate a low-level route by helicopters;
(d) S to indicate a route for use by supersonic aircraft;
(e) U to indicate that the route or portion in the upper airspace;
An airway designator should contain at least 1 letter and 1 number:
=> Whenever possible max. of 5 characters=> Shall not exceed 6 characters
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