Section 77.5 - Applicability(a) If you propose any construction or alteration described in § 77.9 , you must provide adequate notice to the FAA of that construction or alteration.(b) If requested by the FAA, you must also file supplemental notice before the start date and upon completion of certain construction or alterations that are described in § 77.9 .(c) Notice received by the FAA under this subpart is used to:(1) Evaluate the effect of the proposed construction or alteration on safety in air commerce and the efficient use and preservation of the navigable airspace and of airport traffic capacity at public use airports;(2) Determine whether the effect of proposed construction or alteration is a hazard to air navigation;(3) Determine appropriate marking and lighting recommendations, using FAA Advisory Circular 70/7460-1, Obstruction Marking and Lighting;(4) Determine other appropriate measures to be applied for continued safety of air navigation; and(5) Notify the aviation community of the construction or alteration of objects that affect the navigable airspace, including the revision of charts, when necessary.