

Visit the FAA’s Obstruction Evaluation / Airport Airspace Analysis webpage for more information regarding whether or not you will need to file FAA Form 7460-1.Īdditional information can be found on the Washington State Department of Transportation obstruction evaluation webpage. Construction or alteration located on a public-use airport or heliport regardless of height or location.Highway, railroad or other traverse way whose prescribed adjusted height would exceed the above-noted standards.Within 5,000 feet of a public use heliport that exceeds a 25:1 surface.Within 10,000 feet of a public use or military airport that exceeds a 50:1 surface from any point on the runway of each airport with its longest runway no more than 3,200 feet.


Obstruction evaluations are vital to keeping air traffic operations safe. Disadvantaged Business Enterprise Program.
