Definition
A systematic visual search technique in which a pilot moves their eyes in a deliberate, structured pattern across sectors of the sky and instrument panel to detect other aircraft, terrain, weather, and changes in flight parameters before they become a problem.
Plain English
Looking around the sky and across the instruments in a planned, repeating pattern instead of just glancing or staring at one spot, so that nothing important goes unnoticed.
Context Anchor
Used during visual lookout, especially when flying near other aircraft, near an airport, before turns, and while practicing maneuvers.
Derivation
From Latin scandere, 'to climb' or 'to step.' The sense evolved into 'examining point by point,' which fits the aviation use exactly: the eyes step across the sky in pieces rather than taking it in all at once.
Why Pilots Care
Poor scanning is a leading factor in mid-air collisions; disciplined scanning directly improves collision avoidance and flight safety.
Grounding Statement
A useful scan means moving your eyes through the outside view in small steps, with brief pauses long enough to actually notice what is there.
Intuition Check
Scanning does not mean casually looking around. In this FAA context, it means an intentional outside search pattern used to help see and avoid other aircraft or hazards.
Example Sentence 1
During cruise, the instructor reminded the student to keep scanning outside in short, deliberate movements rather than fixating on the GPS.
Example Sentence 2
Before entering the traffic pattern, the instructor reminded the student to complete a full scan of the approach path.