diff --git a/data/dicts/aviation.csv b/data/dicts/aviation.csv
index a8946331..9daad684 100644
--- a/data/dicts/aviation.csv
+++ b/data/dicts/aviation.csv
@@ -441,6 +441,7 @@ RSC,Runway Surface Condition
 RSI,Remote Status Indicator
 RSO,Range Safety Officer
 RSRS,Reduced Same Runway Separation
+RSU,Runway Supervisory Unit
 RTAF,Royal Thai Air Force
 RTCA,Radio Technical Commission for Aeronautics
 RTF,Radio Telephony