Airport Part 77 Surfaces - Approach: Iowa
- Iowa DOT GIS Services
- The approach surface is longitudinally centered on the extended runway centerline and extends outward and upward from each end of the primary surface. An approach surface is applied to the end of each runway based upon the type of approach available. (Slopes can vary from 20:1, 34:1, 40:1 or 50:1).
- State of Iowa Open Data
- Iowa, United States
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