Sec.  27.56   Antenna structures; air navigation safety.

   A licensee that owns its antenna structure(s) must not allow such antenna
   structure(s) to become a hazard to air navigation. In general, antenna
   structure owners are responsible for registering antenna structures with the
   FCC if required by part 17 of this chapter, and for installing and
   maintaining any required marking and lighting. However, in the event of
   default of this responsibility by an antenna structure owner, the FCC
   permittee or licensee authorized to use an affected antenna structure will
   be held responsible by the FCC for ensuring that the antenna structure
   continues to meet the requirements of part 17 of this chapter. See  Sec. 17.6 of
   this chapter.

   (a) Marking and lighting. Antenna structures must be marked, lighted and
   maintained in accordance with part 17 of this chapter and all applicable
   rules and requirements of the Federal Aviation Administration. For any
   construction or alteration that would exceed the requirements of section
   17.7 of this chapter, licensees must notify the appropriate Regional Office
   of the Federal Aviation Administration (FAA Form 7460–1) and file a request
   for antenna height clearance and obstruction marking and lighting
   specifications (FCC Form 854) with the FCC, WTB, 1270 Fairfield Road,
   Gettysburg, PA 17325.

   (b) Maintenance contracts. Antenna structure owners (or licensees and
   permittees, in the event of default by an antenna structure owner) may enter
   into contracts with other entities to monitor and carry out necessary
   maintenance of antenna structures. Antenna structure owners (or licensees
   and permittees, in the event of default by an antenna structure owner) that
   make such contractual arrangements continue to be responsible for the
   maintenance of antenna structures in regard to air navigation safety.