Obstruction evaluation refers to aeronautical studies conducted by the Federal Aviation Administration (FAA) for any object that may affect the national airspace, air navigation facilities, or airport capacity. 

The FAA's primary mission is to conduct formal aeronautical studies on existing or proposed construction as stated in Title 14, Code of Federal Regulations (14 CFR) Part 77 to ensure the safety of air navigation and the efficient utilization of navigable airspace by aircraft.

Obstruction Evaluation Program

Submit your new proposed construction or alteration notices: click here.

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Contacts

• Contact the Airport District Office (ADO) for your on-airport property proposal.
• Contact the Obstacle Evaluation Group (OEG) for your off-airport property proposal.
• Need help logging into the OE/AAA System or setting up a new account? OEAAA Support Desk is available at (202) 580-7500.