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Cranes on the Airport

Obstruction Evaluation / Airport Airspace Analysis (OE/AAA) (faa.gov)

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.

Please click here to use the FAA's Notice Criteria Tool to determine if you meet the requirements to file notice of your construction or alteration

OR

In accordance with 14 CFR Part 77.9, if you propose any of the following types of construction or alteration, you must file notice with the FAA at least 45 days prior to beginning construction:

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);

OR any highway, railroad, waterway or other traverse way for mobile objects, of a height which, if adjusted upward as defined in 14 CFR 77.9(c) would exceed a standard of 14 CFR 77.9 (a) or (b);
OR your structure will emit frequencies, and does not meet the conditions of the FAA Co-location Policy;
OR your proposed structure will be in proximity to a navigation facility and may impact the assurance of navigation signal reception;
OR any construction or alteration exceeding 200 feet above ground level, regardless of location;
OR any construction or alteration located on an airport described in 14 CFR 77.9(d);
OR filing has been requested by the FAA.