14 CFR 77.1 - Purpose.
This part establishes:
(a) The requirements to provide notice to the FAA of certain proposed construction, or the alteration of existing structures;
(b) The standards used to determine obstructions to air navigation, and navigational and communication facilities;
(c) The process for aeronautical studies of obstructions to air navigation or navigational facilities to determine the effect on the safe and efficient use of navigable airspace, air navigation facilities or equipment; and
(d) The process to petition the FAA for discretionary review of determinations, revisions, and extensions of determinations.