---
kind: "section"
citation: "14 C.F.R. § 77.13"
title: "14"
number: "77.13"
heading: "Applicability."
url: "https://uscodex.org/cfr/14/77.13"
---

# §77.13. Applicability.


This subpart describes the standards used for determining obstructions to air navigation, navigational aids, or navigational facilities. These standards apply to the following:

- (a) Any object of natural growth, terrain, or permanent or temporary construction or alteration, including equipment or materials used and any permanent or temporary apparatus.
- (b) The alteration of any permanent or temporary existing structure by a change in its height, including appurtenances, or lateral dimensions, including equipment or material used therein.

## Notes

### Authority

Authority: 49 U.S.C. 106 (g), 40103, 40113-40114, 44502, 44701, 44718, 46101-46102, 46104.

### Source

Source: Docket FAA-2006-25002, 75 FR 42303, July 21, 2010, unless otherwise noted.