concept is used in Canada and certain European countries, but not in the U.S., where the Private Pilot certificate itself authorizes the pilot to accept clearances under VFR. In Israel, for example, VFR does not exist. All visual flights must be performed under CVFR rules. See also Automatic dependent surveillance – broadcast Bárány chair Night VFR Simultaneous opposite direction parallel runway operations Special visual flight rules References External links Australian VFR rules - published by CASA (Civil Aviation Safety Authority) Aviation law