Definition
A Federal Aviation Administration program for upgrading, modernizing, and standardizing approach lighting systems at airports. The plan covers the configuration, installation, and replacement of the lights that guide pilots from the final approach segment to the runway threshold during low-visibility approaches.
Plain English
An FAA program for improving the rows of lights that lead a pilot's eye to the runway during an approach, especially in poor visibility.
Context Anchor
Seen in FAA acronym lists, airport planning material, and information about upgrades or construction affecting runway approach lights.
Why Pilots Care
Better approach lights reduce the chance of landing errors and improve safety on night or instrument approaches.
Intuition Check
ALSIP is not a type of light the pilot switches on. It refers to a plan or project to improve an approach lighting system.
Example Sentence 1
Funding under the Approach Lighting System Improvement Plan allowed the airport to upgrade its older lighting to a configuration that supports lower approach minimums.
Example Sentence 2
ALSIP projects help ensure reliable lighting is available for low-visibility landings.