Air Traffic Services Information Circulars (ATSIC) is published for purposes of bringing to the attention of the ANSP educational materials related to aviation safety. The publications could be initiated as a result of ICAO State letters which do not require immediate changes to local regulations, new safety initiatives or international best practices as identified by AAR Division. The ANSP is encouraged to review and adopt the material if practicable. Where appropriate, the material in the publications may be incorporated into subsequent amendments of the Manual of Standards.