The MALSR (Medium Intensity Approach Lighting System with Runway Alignment Indicator Lights) is a medium approach intensity lighting system (ALS) installed in airport runway approach zones along the extended centerline of the runway.
The MALSR is a Medium Approach Lighting System with RAILs (Runway Alignment Indicator Lights) installed in airport runway approach zones along the extended centerline of the runway. The MALSR, consisting of a combination of threshold lamps, steady burning light bars and flashers, provides visual information to pilots on runway alignment, height perception, roll guidance, and horizontal references for Category I Precision Approaches.
Three intensity levels.
PCL, remote and manual switching.