Obstacle Documentation

Obstacle Analysis

We can create a digital surface model (DSM) of the area surrounding the aerodrome. By comparing this model to a 3D model of the protective surfaces related to the aerodrome, we can identify penetrations.

Identify obstacles in airport surroundings
ICAO and ADR compliant
Total and easy overview
Documentation for procedure design

Data for aerodrome obstacle charts

Ascend delivers the necessary obstacle data to update your charts. Obstacles shall be shown on the AOC Type A Charts with an obstacle clearance surface having a slope of 1.2% in compliance with the ICAO requirements.
Aerodrome Obstacle Charts — ICAO Type A (Operating Limitations) shall be made available for all aerodromes regularly used by international civil aviation, except for those aerodromes where there are no obstacles in the take-off flight path areas.

Where a chart is not required because no obstacles exist in the take-off flight path area, a notification to this effect shall be published. Contact us for a price.

Identification of controlling obstacle

In terminal instrument procedures, the highest obstacle relative to a prescribed plane within a specified area; in precision approach procedures where obstacles penetrate the approach surface, the controlling obstacle is the one which results in the requirements for the highest decision height. Contact us for a price.