diff --git a/Data/Abbr/aviation.csv b/Data/Abbr/aviation.csv
index a6ad8117..56d1d33f 100644
--- a/Data/Abbr/aviation.csv
+++ b/Data/Abbr/aviation.csv
@@ -430,7 +430,7 @@ TSTC,Texas State Technical College
 TT,True Track
 TVOR,Terminal VOR
 TWEB,Transcribed Weather Broadcast (USA for ATIS)
-TWR,Control Tower
+TWR,Control Tower or Thrust to Weight Ratio
 TWY,Taxiway
 TXC,Taxiway Centreline Lights
 TXE,Taxiway Edge Lights