Definition
Named geographic points in the airspace system defined by the crossing of two or more navigation reference lines, such as VOR radials, or by latitude and longitude coordinates. Intersections serve as fixes used for navigation, route definition, holding, and reporting along airways and instrument procedures.
Plain English
Named points in the sky used for navigation. Each one is defined by where two navigation lines cross, or by exact coordinates, and pilots use them as waypoints along a route.
Context Anchor
Seen on instrument charts, in air traffic control clearances, and in the flight management system waypoint list.
Derivation
From Latin 'intersecare,' meaning 'to cut between.' An intersection is literally where two lines cut across each other — in this case, two navigation reference lines crossing at a single point in the sky.
Why Pilots Care
Accurate identification of these points ensures correct routing, altitude compliance, and safe separation under IFR.
Intuition Check
Do not picture a road intersection. In aviation, intersections are named navigation points, often with no visible object on the ground.
Example Sentence 1
ATC cleared the flight to hold at the BOACH intersection until further notice.
Example Sentence 2
We crossed three intersections before receiving a direct clearance to the airport.