GM1 Article 2(28) Air traffic control clearance

CAA ORS9 Decision No. 1

(a) For convenience, the term ‘air traffic control clearance’ is frequently abbreviated to ‘clearance’ when used in appropriate contexts.

(b) The abbreviated term ‘clearance’ may be prefixed by the words ‘taxi’, ‘take-off’, ‘departure’, ‘en route’, ‘approach’ or ‘landing’ to indicate the particular portion of flight to which the air traffic control clearance relates.