diff --git a/data/abbr/aviation.csv b/data/abbr/aviation.csv
index 337d54d5..b24beb87 100644
--- a/data/abbr/aviation.csv
+++ b/data/abbr/aviation.csv
@@ -11,6 +11,7 @@ A/F,Autofeather
 A/FD,Airport/Facility Directory
 A/P,Autopilot
 A/R,Altitude Rate
+A-VDGS,Advanced Visual Docking Guidance System
 A300,Airbus A300 twinjet
 A310,Airbus A310 twinjet
 A320,Airbus A320 family of twinjets
@@ -55,8 +56,7 @@ ADL,Aeronautical Data Link
 ADLY,Arrival Delay
 ADP,Aerodrome dé Paris (Charles de Gaulle)
 ADP,Automated Data Processing
-ADS,Automated Distribution System
-ADS,Automatic Dependent Surveillance
+ADS,"Automated Distribution System, Automatic Dependent Surveillance, Aircraft Docking System"
 ADS-B,Automatic Dependent Surveillance-Broadcast
 AENA,Aeropuertos Españoles y Navegación Aérea
 AEO,All Engines Operative
diff --git a/data/abbr/general.csv b/data/abbr/general.csv
index fe046263..70e6f749 100644
--- a/data/abbr/general.csv
+++ b/data/abbr/general.csv
@@ -159,7 +159,7 @@ ADM,"Administrative,,Admiral,and the U.S. Public Health Service Commissioned Cor
 ADOA,Air Defence Operations Area
 ADP,"Adenosine DiPhosphate,Army Doctrine Publication (UK,Canada,Australia),Automatic/Automated Data Processing"
 ADRG,Arc-second Raster Chart (ARC) Digitized Raster Graphics
-ADS,"Active Denial System,Astrophysics Data System,Attention Deficit Syndrome"
+ADS,"Active Denial System, Astrophysics Data System, Attention Deficit Syndrome"
 ADSR,"Attack,Decay,Sustain,Release (sound envelope specification)"
 ADT,Atlantic Daylight Time (UTC−3 hours)
 ADTB,Army Doctrine and Training Bulletin