Airport Horizontal Surface

What is an Airport’s Horizontal Surface?


A basic definition of an Airport Horizontal Surface is a horizontal plane 150 feet above the established airport elevation. 


The Horizontal Surface is constructed by swinging arcs around the end of the Primary Airport Surface which is aligned (longitudinally) with each runway and extends 200 ft. from each runway end.


The radius of the Horizontal Surface’s arcs for all runways designated as Visual or Utility is 5,000 feet.


For Precision Instrument Runways and Non-Precision Instrument Runways, the radius of each Horizontal Surface’s arc is 10,000 feet.


The Federal Aviation Administration (FAA) will frequently issue a Notice of Presumed Hazard or a Determination of Hazard in response to an FAA Form 7460-1 filing for any proposed structure that penetrates the Horizontal Surface. 


Once a sponsor has received an unfavorable determination based upon the penetration of an Airport’s Horizontal Surface, it would be prudent to engage an aviation consultant who has extensive expertise in developing innovative and workable solutions that will either allow them to develop their structure as planned or that will mitigate the FAA’s issues resulting in a favorable determination.


Williams Aviation Consultants Inc. has been very successful in receiving a favorable determination from the FAA for our clients that had previously received a Notice of Presumed Hazard or a Determination of Hazard.


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