Index: HDDefs.h
===================================================================
diff -u -rdbc873e4e818974a1d732baa06141902407eb781 -r7173ec09a4aca263fb333951b10af24de4338fcb
--- HDDefs.h	(.../HDDefs.h)	(revision dbc873e4e818974a1d732baa06141902407eb781)
+++ HDDefs.h	(.../HDDefs.h)	(revision 7173ec09a4aca263fb333951b10af24de4338fcb)
@@ -8,7 +8,7 @@
 * @file    HDDefs.h
 *
 * @author  (last)      Dara Navaei
-* @date    (last)      02-Apr-2025
+* @date    (last)      14-Nov-2025
 *
 * @author  (original)  Sean Nash
 * @date    (original)  29-May-2020
@@ -782,6 +782,7 @@
     HD_EVENT_BLOOD_LEAK_ZEROING_REQUIRED,                               ///< HD event blood leak zeroing required.
     HD_EVENT_UF_RATE_TX_DUR,                                            ///< HD event UF rate changes in treatment duration.
     HD_EVENT_UF_RATE_TIME_TX_DUR,                                       ///< HD event UF rate time difference in treatment duration.
+    HD_EVENT_AIR_TRAP_STATE_CHANGE,                                     ///< HD event air trap state change.
     NUM_OF_EVENT_IDS                                                    ///< Total number of HD events
 };
 typedef enum HD_Event_List HD_EVENT_ID_T;                               ///< Type for HD event list enumeration