ATS.TR.250 Essential traffic and essential local traffic information

ESSENTIAL TRAFFIC INFORMATION — CONTENT Essential traffic information should include the following information if relevant and available:

(a)direction of flight of aircraft concerned;

(b)type and wake turbulence category of aircraft concerned;

(c)level of aircraft concerned; and

(d)one of the following:

(1)estimated time over the reporting point nearest to where the level will be crossed; or

(2)relative bearing of the aircraft concerned in terms of the 12-hour clock as well as distance from the conflicting traffic; or

(3)actual or estimated position of the aircraft concerned.

ESSENTIAL TRAFFIC INFORMATION — CONTENT Subject to provisions in point (b) of ATS.TR.210, air traffic control units are required to provide separation between IFR flights in airspace classes A to E, and between IFR and VFR flights in classes B and C. Air traffic control units are not required to provide separation between VFR flights, except within airspace class B. Therefore, IFR or VFR flights may constitute essential traffic to IFR traffic, and IFR flights may constitute essential traffic to VFR traffic. However, a VFR flight would not constitute essential traffic to other VFR flights except within class B airspace.

ESSENTIAL LOCAL TRAFFIC INFORMATION

(a)Information on essential local traffic should be issued in a timely manner, either directly or through the unit providing approach control service when, in the judgement of the aerodrome air traffic control, such information is necessary in the interest of safety, or when requested by aircraft.

(b)Essential local traffic should be described so as to be easily identified.