Riverside Airport in Riverside County, California — The American West (Pacific Coastal)
MALSR
Photographed by Adam Margolis, March 9, 2025
1. MALSR Marker
(Medium Intensity Approach Lighting System With Runway Alignment Indicator Lights)
FAA lighting system providing runway alignment guidance for landing aircraft
KRAL MALSR decommissioned
April 2013
Erected 2013 by Riverside Municipal Airport.
Topics. This historical marker is listed in this topic list: Air & Space. A significant historical month for this entry is April 2013.
Location. 33° 57.034′ N, 117° 26.758′ W. Marker is in Riverside, California, in Riverside County. It is in Riverside Airport. It is on Flight Road west of Airport Drive, on the right when traveling west. Touch for map. Marker is at or near this postal address: 6951 Flight Road, Riverside CA 92504, United States of America. Touch for directions.
Regionally, this marker is in Greater Los Angeles, in the Inland Empire, and in the Peninsular Ranges. It is also in the American Southwest. Globally, it is in North America, on the Ring of Fire, in the Pacific Rim, in the Western Hemisphere, in the Western World, and in the Anglosphere. Historically, it finds itself in what was once New Spain and also Mexicos Alta California.
Other nearby markers. At least 8 other markers are within 3 miles of this marker, measured as the crow flies: Camp Anza Officer's Club (approx. 1.2 miles away); De Anza Trail (approx. 1.3 miles away); Henry M. Streeter House (approx. 1.7 miles away); Hawthorne House (approx. 1.7 miles away); Heritage House (approx. 1.7 miles away); De Anza Crossing of the Santa Ana River (approx. 1.8 miles away); Sherman Institute (approx. 1.8 miles away); Arlington Branch Library (approx. 2.2 miles away). Touch for a list and map of all markers in Riverside.
More about this marker. Located at Riverside
this page online
Regarding MALSR. The Medium-Intensity Approach Lighting System with Runway Alignment Indicator Lights (MALSR) is a standard airport visual navigation system located at the end of a runway to help pilots during landings, especially in low-visibility or nighttime conditions. At Riverside Municipal Airport (KRAL), the MALSR was decommissioned in April 2013. This decision was documented by the FAA, resulting in the cancellation of several approach lighting orders.
Decommissionings of this nature generally happen when an approach light system becomes obsolete, when airport upgrades or runway reconfigurations make the specific alignment unneeded, or when advancing technology (such as new LED lighting or advanced GPS approaches) renders the older system redundant.
Although the MALSR was taken down, the airport itself remains active as a premier corporate and general aviation airport in the Inland Empire.
Photographed by Adam Margolis, March 9, 2025
2. Runway Lights and Marker
Photographed by Adam Margolis, March 9, 2025
3. Concrete Detail
Photographed by Adam Margolis, March 9, 2025
4. MALSR Marker
Photographed by Adam Margolis, March 9, 2025
5. Riverside Municipal Airport (KRAL)
courtesy FAA
6. Example of a typical MALSR
Credits. This page was last revised on June 15, 2026. It was originally submitted on April 15, 2025, by Adam Margolis of Mission Viejo, California. This page has been viewed 126 times since then and 12 times this year. Photos: 1, 2, 3, 4, 5. submitted on April 15, 2025, by Adam Margolis of Mission Viejo, California. 6. submitted on June 15, 2026, by Craig Baker of Sylmar, California. • Andrew Ruppenstein was the editor who published this page.
