diff --git a/src/main/java/aero/t2s/modes/decoder/df/DF18.java b/src/main/java/aero/t2s/modes/decoder/df/DF18.java
index 28293e8..60c766d 100644
--- a/src/main/java/aero/t2s/modes/decoder/df/DF18.java
+++ b/src/main/java/aero/t2s/modes/decoder/df/DF18.java
@@ -15,6 +15,22 @@ public DF18 decode() {
         int typeCode = data[4] >>> 3;
 
         switch (typeCode) {
+            case 0:
+            case 9:
+            case 10:
+            case 11:
+            case 12:
+            case 13:
+            case 14:
+            case 15:
+            case 16:
+            case 17:
+            case 18:
+            case 20:
+            case 21:
+            case 22:
+                extendedSquitter = new AirbornePosition(data, getIcao());
+                break;
             case 1:
             case 2:
             case 3: