transitional surface

transitional surface

A specified surface sloping up and out from the edge of an approach surface and from a line originating at the end of the inner edge of each approach area, drawn parallel to the runway centerline in the direction of landing. The transitional surface identifies the height limitations on an object before it becomes an obstruction to air navigation. It extends outward and upward at right angles to the runway centerline, and the runway centerline is extended at a slope of 7-to-1 from the side of the primary surface and from the side of the approach surfaces. See takeoff climb surface.
References in periodicals archive ?
The crackle slip/ glaze and dark rectangular marks on the lower parts of the vessel become a transitional surface, a kind of preparation for the eye and the hand to travel back and forth from the glassy cup to the darker, drier surround.
the first is sampling, site analysis, storage and transportation of samples of sediment and biota in inland surface waters and the second involves the analysis of hazardous substances in the sediment matrix in inland, coastal and transitional surface water, as the analysis of hazardous substances in biota array of continental surface waters.
This project will fund the removal of tree obstructions in the Runway 10/28 and 1/19 approach and transitional surfaces. This is phase six of six.
Around $130,000 was awarded to Summersville Airport to take out trees and obstructions from one of its runway approaches and transitional surfaces.
While, for cutting down the trees and obstructions from one of its runway approaches and transitional surfaces, Summersville Airport will obtain nearly $130,000

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