https://airplanepilot.blogspot.com/2005/12/am-ak-malsr-ssalr-malsf.html
Cockpit Conversation: AM, AN & AK - MALSR, SSALR & MALSF
The names of the lighting systems get longer as the lights get more complicated. I realize now that the reason I didn't know the differences...
cockpit conversationak
https://www.airportlights.com/product/malsr-medium-intensity-approach-lighting-system/
MALSR - Medium-Intensity Approach Lighting System - Airport Lights
approach lighting systemmedium intensityairportlights