Question: When and how should I populate the distanceFromRunwayEnd attribute of the Obstacle feature class?

Answer: Populate this distance for all obstacles within a Vertically Guided Runway Primary Surface (VGRPS), Vertically Guided Primary Connection Surface (VGPCS), Vertically Guided Approach Transitional Surface (VGATS), Vertically Guided Approach Surface (VGAS) or Vertically Guided Protection Surface (VGPS) associated with a specific runway.

Measure the distance from the Runway End nearest to the obstacle to a point directly abeam (perpendicular to) the obstacle along the Runway Centerline or an extended Runway Centerline. Enter the distance in U.S. Survey Feet.

For an obstacle not within one of the Obstruction Identification Surfaces (OIS) listed above, enter 0.

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