Fixed Data Link Capability Change Indication in BDS1,0

It was decoding the wrong bit. Fixes #24
SeRoSystems · Dec 4, 2024 · d9fe1a0 · d9fe1a0
1 parent f88f2d8
commit d9fe1a0
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/main/java/de/serosystems/lib1090/msgs/bds/DataLinkCapabilityReport.java b/src/main/java/de/serosystems/lib1090/msgs/bds/DataLinkCapabilityReport.java
@@ -20,7 +20,7 @@
  */
 
 /**
- * Decoder for Datalink Capability Report (BDS 1,0)
+ * Decoder for Datalink Capability Report (BDS 1,0) based on DO-181F Table B- B-3-16a
  */
 @SuppressWarnings("unused")
 public class DataLinkCapabilityReport extends BDSRegister implements Serializable {
@@ -445,7 +445,7 @@ static short extractActiveTransponderSideIndicator(byte[] message) {
     }
 
     static boolean extractChangeFlag(byte[] message) {
-        return ((message[5] >>> 5) & 0x01) == 1;
+        return ((message[6] >>> 5) & 0x01) == 1;
     }
 
     // Override