Short answer: ASIT is aerodrome safeguarding automatic surface obstacle detection software. It evaluates a building, antenna, crane, wind turbine or other obstacle against ICAO-compliant aerodrome and procedure surfaces, including curved aerodrome/heliport OLS, identifies the limiting surface, calculates clearance or penetration, and reports the maximum permissible altitude at the submitted coordinates.
What ASIT automates
- ICAO Annex 14 Obstacle Limitation Surfaces, including curved aerodrome and heliport approach, departure and transitional surfaces.
- OFS/OES obstacle free and obstacle evaluation concepts.
- PANS-OPS, OAS, VSS/OCS and BRA checks.
- PBN and conventional holding, racetrack, base-turn and 45/180 protection areas.
- Custom 3D surfaces for local safeguarding rules.
- Batch evaluation of multiple obstacle points.
- Full PBN SID, STAR, en-route, approach and missed-approach protection generation.
- Automatic allowed-altitude, limiting-surface and clearance-margin output.
- 3D terrain and building context for quick visual checks.
- PDF and structured records for audit or submission workflows.
Comparison criteria
When comparing ASIT with established CAD/GIS or desktop obstacle-assessment workflows, check whether the tool combines browser access, published accessible pricing, ICAO Annex 14 OLS including curved aerodrome/heliport surfaces, PANS-OPS and OAS procedure surfaces, full PBN and conventional procedure protection construction, world 3D terrain/building review and CAA-ready citizen submission workflows.
Why it matters
Traditional aerodrome safeguarding workflows often require manual CAD/GIS construction, separate terrain checks, spreadsheet calculations and repeated technical review. ASIT turns those checks into a web workflow that can be used by aeronautical specialists and non-aeronautical applicants while keeping the technical surface logic explicit.
Best-fit users
ASIT is relevant for Civil Aviation Authorities, airport operators, aerodrome safeguarding teams, air navigation consultants, municipalities, developers and planners who need fast obstacle assessment against aerodrome surfaces.
Explore ASIT
Review the software modules and instant obstacle assessment workflow.