Obstruction Evaluation / Airport Airspace Analysis (OE/AAA)

Advisory Circular 70/7460-1M, Obstruction Marking and Lighting, describes the standards for marking and lighting structures such as buildings, chimneys, antenna towers, cooling towers, storage tanks, supporting structures of overhead wires, etc.

• Intuitive user interface
• Additional account security
• Smart programming for dynamic data entry
• Dynamic search options and features
• Improved case processing for new cases (7460-1 forms)

• Preview data is for familiarization only.
• Saved data is not submitted to the FAA.
• Preview data will not be available in the upcoming "live" modernized OE/AAA site.
• The FAA will be retiring the legacy OE/AAA system in the near future. In preparation for the upcoming transition, users are encouraged to take advantage of the OE/AAA Preview to familiarize themselves with the modernized features, functions and layout.

OE/AAA Filing Process

If your organization is planning to sponsor any construction or alterations which may affect navigable airspace, you must file a Notice of Proposed Construction or Alteration (FAA Form 7460-1) either electronically via this website or manually with the FAA.

E-filing your proposal is preferred because
- It's the fastest, most accurate method to submit to the FAA and immediately assigns an aeronautical study number to your case.
- It establishes an electronic communications link with FAA and allows you to obtain project status and notifications directly from this site.

If you are unable to file electronically please click here

File forms 7460-1 electronically via this website - New User Registration.

Landing Area Proposal data collection has been disabled in OE/AAA. Please use the FAA's Airport Data and Information Portal (ADIP) to submit all your future LAP/7480-1 applications: https://adip.faa.gov
or

Find the FAA Airports Region / District Office having jurisdiction over the airport on which the construction is located, and file to that address.

Who Needs to File

The requirements for filing with the Federal Aviation Administration for proposed structures vary based on a number of factors: height, proximity to an airport, location, and frequencies emitted from the structure, etc. For more details, please reference 14 CFR Part 77.9.

any construction or alteration that exceeds an imaginary surface extending outward and upward at any of the following slopes:

• 100 to 1 for a horizontal distance of 20,000 ft. from the nearest point of the nearest runway of each airport described in 14 CFR 77.9(d) with its longest runway more than 3,200 ft. in actual length, excluding heliports
• 50 to 1 for a horizontal distance of 10,000 ft. from the nearest point of the nearest runway of each airport described in 14 CFR 77.9(d) with its longest runway no more than 3,200 ft. in actual length, excluding heliports
• 25 to 1 for a horizontal distance of 5,000 ft. from the nearest point of the nearest landing and takeoff area of each heliport described in 14 CFR 77.9(d);