GM1 SECTION II

GENERAL

(a)Guidance material on the establishment of ATS routes and procedures is contained in ICAO Doc 9426 ‘Air Traffic Services Planning Manual’.

(b)Guidance material on the establishment of ATS routes defined by omni-directional range (VOR) is contained in Attachment A to ICAO Annex 11.

(c)Guidance material on ICAO Codes and Routes Designators (ICARD) is contained in the ICAO Five-Letter Name-Codes (5LNC) Guidelines.

(d)The spacing between parallel tracks or between parallel ATS route centre lines based on performance-based navigation should be dependent upon the relevant navigation specification required.

(e)When warranted by density, complexity or nature of the traffic, special routes should be established for use by low-level traffic, including helicopters operating to and from helidecks on the high seas. When determining the horizontal spacing between such routes, account should be taken of the navigational means available and the navigation equipment carried on helicopters’ board.