Definition 1 of 2
Plain English Meaning
Anything in the air or on the ground that could lead to your aircraft hitting something, or something hitting you.
Full Definition
Any condition, object, aircraft, or environmental factor that creates a meaningful risk of an aircraft striking, or being struck by, something during flight or ground operations. In instructional contexts, it covers both midair collision risks (other aircraft, terrain, obstacles, birds) and ground collision risks (vehicles, equipment, other aircraft on taxiways and ramps).
Context Anchor
Seen in risk management, preflight planning, airport operations, and discussions of around the training .