14 CFR § 77.27 - Initiation of studies.

---
identifier: "/us/cfr/t14/s77.27"
source: "ecfr"
legal_status: "authoritative_unofficial"
title: "14 CFR § 77.27 - Initiation of studies."
title_number: 14
title_name: "Aeronautics and Space"
section_number: "77.27"
section_name: "Initiation of studies."
chapter_name: "FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION"
subchapter_number: "E"
subchapter_name: "AIRSPACE"
part_number: "77"
part_name: "SAFE, EFFICIENT USE, AND PRESERVATION OF THE NAVIGABLE AIRSPACE"
positive_law: false
currency: "2026-04-05"
last_updated: "2026-04-05"
format_version: "1.1.0"
generator: "[email protected]"
authority: "49 U.S.C. 106 (g), 40103, 40113-40114, 44502, 44701, 44718, 46101-46102, 46104."
regulatory_source: "Docket FAA-2006-25002, 75 FR 42303, July 21, 2010, unless otherwise noted."
cfr_part: "77"
---


# 77.27 Initiation of studies.

The FAA will conduct an aeronautical study when:

(a) Requested by the sponsor of any proposed construction or alteration for which a notice is submitted; or

(b) The FAA determines a study is necessary.