Sec. 139.333 - Protection of navaids.
Each certificate holder shall --
(a) Prevent the construction of
facilities on its airport that, as determined by the Administrator, would
derogate the operation of an electronic or visual navaid and air traffic
control facilities on the airport;
(b) Protect, or if the owner is other
than the certificate holder, assist in protecting, all navaids on its
airport against vandalism and theft; and
(c) Prevent, insofar as it is within the
airport's authority, interruption of visual and electronic signals of
navaids.