Definition
Flight operations conducted when visibility, ceiling, or runway visual range is reduced below normal thresholds, requiring specific aircraft equipment, crew qualifications, airport infrastructure, and approved procedures to safely conduct takeoff, approach, landing, or surface movement.
Plain English
Flying and ground movements done when you can't see far because of fog, rain, snow, or low cloud. Doing this safely takes special equipment, training, and procedures that aren't required in normal weather.
Context Anchor
Seen in instrument procedure and advanced cockpit display discussions, including Synthetic Vision Guidance System use during takeoff, approach, landing, or taxi when normal outside references are hard to see.
Why Pilots Care
These procedures let pilots complete flights that would otherwise be canceled or diverted, while keeping safety margins intact through equipment and training requirements.
Grounding Statement
Picture approaching or taxiing toward a runway in fog, where the runway lights or markings may not become clear until very late.
Intuition Check
Low visibility operations does not just mean the weather looks bad. It means the visibility is low enough that approved procedures, equipment, and limits control how the operation is conducted.
Example Sentence 1
The captain confirmed the aircraft and crew were authorized for low visibility operations before beginning the Category II approach.
Example Sentence 2
With SVGS active, the aircraft continued the approach under low visibility operations when the pilot could not yet see the runway lights.