Definition
Bright, white strobe lights placed at or near the approach end of certain runways to make the runway environment easier to identify from a distance, especially at night or in reduced visibility. They flash in rapid sequence and are part of the approach lighting system on some runways.
Plain English
Very bright white lights that flash quickly to help pilots spot the runway from far away or in poor visibility.
Context Anchor
You encounter this term when studying aircraft lighting, checking lights before flight, or using the strobe or anti-collision light switch in the cockpit.
Why Pilots Care
These lights are required for safe operations at night or in reduced visibility; they directly reduce mid-air collision risk by making the aircraft conspicuous from all directions.
Analogy
They work like a bright blinking warning light: the flash pattern catches attention faster than a steady light.
Intuition Check
Do not confuse these with landing lights. High-intensity, flashing white lights are mainly for being seen by others; landing lights are mainly for helping the pilot see ahead and making the airplane more visible during takeoff and landing.
Example Sentence 1
On final approach at night, the high-intensity, flashing white lights made the runway threshold easy to identify from several miles out.
Example Sentence 2
The approaching traffic reported seeing our high-intensity, flashing white lights from several miles away.