AIS.TR.505 AIRAC

OTHER CIRCUMSTANCES WHERE USE OF THE AIRAC SYSTEM MAY BE CONSIDERED The AIRAC system may also be considered for the provision of information relating to the establishment and withdrawal of, and planned significant changes in, the circumstances listed below:

(a)position, height and lighting of air navigation obstacles;

(b)hours of service of aerodromes, facilities and services;

(c)customs, immigration and health services;

(d)temporary danger, prohibited and restricted areas and navigational hazards, military exercises and mass movements of aircraft; and

(e)temporary areas or routes or portions thereof where the possibility of interception exists.

MAJOR CHANGES Whenever major changes are planned and where advance notice is desirable and possible, information should be distributed and/or made available by the AIS provider, whenever practicable, so as to reach recipients at least 56 days in advance of the AIRAC effective date. This should apply to the establishment of, and premeditated major changes in the circumstances listed below, as well as to other major changes if deemed necessary:

(a)new aerodromes for international instrument flight rules operations;

(b)new runways for instrument flight rules (IFR) operations at international aerodromes;

(c)design and structure of the ATS route network;

(d)design and structure of a set of terminal procedures (including change of procedure bearings due to magnetic variation change); and

(e)circumstances listed in AIS.TR.505(a) if the entire State or any significant portion thereof is affected or if cross-border coordination is required.