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Transport Canada Aeronautical Assessment
Assessment of potential obstacles to air navigation.
You need it when: Cranes or structures >90 m AGL within 6 km of an aerodrome or 3.7 km of a VFR route, or anything >150 m AGL.
Why it's needed
- Required for obstacles meeting the height/proximity thresholds.
When to apply
- In parallel with NAV CANADA land use review.
Review time
Plan for about 120 business days.
Documents for a complete application
- Aeronautical Assessment Form; crane coordinates & heights
How to submit
- Transport Canada Civil Aviation (regional office).
Forms and guides
- Flight Path Letter of Undertaking (City of Toronto, declaration)
Track Transport Canada Aeronautical Assessment free.
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Sources are marked in the text: [TO] toronto.ca pages, [Guide] general industry guidance, [Plan] permit planning practice. Confirm on the official page before applying.