Operations
Approach Lighting System(ALS)
Definition
A configuration of signal lights extending outward from the runway threshold providing visual transition from instrument to visual references during approach. ALSF-2 and MALSR are common types.
Related Terms
Airport Lighting Systems
Various lighting systems aiding pilots during night operations including runway ...
Instrument Approach
A series of predetermined maneuvers using flight instruments to guide an aircraf...
Decision Height/Altitude(DH/DA)
The height during a precision approach at which the pilot must decide to land or...
Test your knowledge
Think you understand Approach Lighting System? Challenge yourself with practice questions covering operations and all other ATPL subjects.
Start a Practice QuizOr browse all questions by subject