GM1 SERA.9005(b)(2) Scope of flight information service
CAA ORS9 Decision No. 1
INFORMATION RELATED TO COLLISION HAZARDS
Information relating to collision hazards includes only known activities that constitute risks to the aircraft concerned. The availability of such information to air traffic services may sometimes be incomplete (e.g. limitations in radar or radio coverage, optional radio contact by pilots, limitations in the accuracy of reported information by pilots, or unconfirmed level of information) and, therefore, air traffic services cannot assume responsibility for its issuance at all times or for its accuracy.