these are the lights that are placed in the areas where the aircraft first touches the runway.
the runway threshold ligts should be placed perpendicular to runway center line and as close as possible.The lights should show visible green in the direction of aircraft.
200 ft 1200ft
Extend 1,000 ft from the runway centerline from threshold/End lights to the Strobe.
Up
The 4-22 sign on an aircraft runway indicates that the runway is oriented in a 040-degree and 220-degree direction, typically found at the ends of the runway. These signs are located at the runway threshold and provide critical orientation information to pilots. The numbers reflect the magnetic heading of the runway, with each number representing a specific direction to help with navigation.
Runway edge lights are typically white and are used to delineate the edges of the runway during night operations or low visibility conditions. They may be green at the start of the runway, indicating the threshold, and red at the end, signaling the runway's end. In some cases, the lights can also be adjusted to different colors for specific operational needs, such as during construction or when the runway is closed.
taxi clear of runway or do not land.
d is 304m ali bellaghma algeria bellaghma-ali@live.fr
A flashing yellow light in aviation terms is a runway guard light.
If you mean the light gun signals from the control tower- to vehicles, and aircraft on the ground, get off the runway. For aircraft in flight, runway is unsafe, do not land.
The absolute threshold is the smallest amount of light that a person can detect. The human absolute threshold we can detect is a candle flame at 30 miles away.
stop: clear the active runway
return to ramp