Skip to page content
Official US Government Icon

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure Site Icon

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

The latest general information on the Coronavirus (COVID-19) is available on Coronavirus.gov. For FAA-specific COVID-19 resources, please visit faa.gov/coronavirus.
United States Department of TransportationUnited States Department of Transportation

Obstacle Construction Notices

Construction Notices reflect data changes made during a Monday-to-Sunday week, and are available every Tuesday. For each cycle, this page will show one file during the first week, two during the second, and so on, up to the last week. Because each change cycle is eight weeks long, there will never be more than eight files on this page.

The files for the latest eight-week change cycle are listed below. This cycle ends on October 31, 2021.

For the schedule of future change cycles, please visit DOF (Digital Obstacle File).

If you have any questions about Construction Notices, change cycles or the data on this page, please provide comments via the portal's Other category.

Page last modified: