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.
Why Approach Lighting System Matters for Pilots
Operational knowledge like Approach Lighting System is tested across multiple FAA and EASA exam subjects. Pilots who understand Approach Lighting System can operate more safely and efficiently, whether flying light aircraft or commercial airliners. This concept comes up in both written tests and practical checkrides.
Exam Tip
This concept is commonly tested in operations-related questions on FAA and EASA exams. Make sure you can explain Approach Lighting System in your own words for the oral exam. Practice applying this concept to real-world scenarios, not just memorizing the definition.
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...
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Try Free Practice QuestionsMore Operations Terms
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...
Minimum Descent Altitude(MDA)
The lowest altitude to which descent is authorized during a non-precision approa...
Missed Approach
A procedure executed when an instrument approach cannot be completed to a landin...