Obstacle Limitation Surfaces (OLS)
What is OLS?
Obstacle Limitation Surfaces (OLS) define the airspace around an aerodrome that must remain free from obstacles to ensure safe aircraft operations during take-off, approach, and landing.
OLS acts as a regulatory safeguard, protecting flight paths by controlling building heights and structures in and around airport environments.
Why OLS Is Critical for Airport Safety
Protecting Airspace Before Risks Become Incidents
Uncontrolled obstacles pose serious threats to aircraft safety. OLS provides a structured framework to identify, assess, and manage potential penetrations into protected airspace zones.
By implementing OLS correctly, airports and authorities can proactively prevent safety risks, ensure regulatory compliance, and support sustainable airport development.
How We Develop Reliable OLS
A Structured, Aviation-Compliant Workflow
Our OLS development process integrates validated terrain and obstacle data with aerodrome parameters to accurately define protected surfaces.
Each OLS dataset is reviewed for accuracy, consistency, and usability, ensuring it can be confidently used for planning decisions and regulatory assessments.
What Our OLS Solutions Include
Surface Identification
Clear definition of all applicable OLS surfaces based on aerodrome classification and runway characteristics.
Obstacle Penetration Assessment
Accurate identification and evaluation of objects that infringe or potentially infringe protected airspace.
Height Restriction Mapping
Visual and data-driven representation of permissible height limits for development planning.
Regulatory Support Outputs
Documentation and data formats suitable for approvals, audits, and stakeholder coordination.