61-122 - Airport Circling District

LAST AMENDED
12/15/1961


The Airport Circling District comprises those parts of the #flight obstruction area# of any major airport which lie generally below the flight path of aircraft circling such airport and, more specifically, below
the following #airport referenced imaginary surfaces#: those parts of the #horizontal surface# and the #conical surface# which do not coincide with the #approach surfaces# and the #transitional surfaces#.