AMC1 SERA.14025 Principles governing the identification of ATS routes other than standard departure and arrival routes

CAA ORS9 Decision No. 1

LETTERS ‘F’ AND ‘G’

Where letters ‘F’ or ‘G’ are added after the basic designator of the ATS route in question, in order to indicate the type of service provided:

(a) letter ‘F’ indicates that on the route or portion thereof advisory service only is provided; and

(b) letter ‘G’ indicates that on the route or portion thereof flight information service only is provided,

(c) the flight crew are not required to use them in voice communications.