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.
Frequently asked questions
What is ASIT?
ASIT is web-based automatic aerodrome obstacle analysis software. It checks obstacle coordinates and heights against ICAO and custom aerodrome surfaces and returns clearance margin, limiting surface and maximum permissible height.
Which surfaces can ASIT assess?
ASIT can assess ICAO Annex 14 OLS, including straight and curved aerodrome/heliport approach, departure/take-off and transitional surfaces, OFS/OES, PANS-OPS surfaces, OAS, VSS/OCS, BRA, custom uploaded 3D surfaces, full PBN SID/STAR/en-route/approach/missed approach areas and conventional/PBN holding, racetrack, base-turn and 45/180 protection areas.
Does the software comply with ICAO Annex 14 standards and official manuals?
Yes. ASIT complies strictly with ICAO Annex 14 (Volume I for Aerodromes and Volume II for Heliports) and ICAO Doc 9137 Part 6. The obstacle limitation surface calculations (OLS, OFS, OES) and allowable height assessments are completely consistent with official ICAO PDF manual criteria.
What parameters does the automatic obstacle analysis tool check?
The tool checks obstacle height against ICAO aerodrome and procedure surfaces, calculates vertical and horizontal margins, and determines the maximum permissible height for new structures like cranes or buildings.
Can I export obstacle analysis reports?
Yes, ASIT generates professional aeronautical reports and dossiers that are ready for submission to Civil Aviation Authorities (CAA) and airport operators.
Explore ASIT
Review the software modules and instant obstacle assessment workflow.