diff --git a/config/messages.json b/config/messages.json
index 77134e2925..f1f8928650 100644
--- a/config/messages.json
+++ b/config/messages.json
@@ -9989,6 +9989,15 @@
       "file": "observability.go"
     }
   },
+  "event:as.down.data.ack.forward": {
+    "translations": {
+      "en": "forward downlink acknowledged"
+    },
+    "description": {
+      "package": "pkg/applicationserver",
+      "file": "observability.go"
+    }
+  },
   "event:as.down.data.decode.fail": {
     "translations": {
       "en": "decode downlink data message failure"
@@ -10034,6 +10043,15 @@
       "file": "observability.go"
     }
   },
+  "event:as.down.data.failed.forward": {
+    "translations": {
+      "en": "forward downlink failed"
+    },
+    "description": {
+      "package": "pkg/applicationserver",
+      "file": "observability.go"
+    }
+  },
   "event:as.down.data.forward": {
     "translations": {
       "en": "forward downlink data message"
@@ -10043,6 +10061,24 @@
       "file": "observability.go"
     }
   },
+  "event:as.down.data.nack.forward": {
+    "translations": {
+      "en": "forward downlink not acknowledged"
+    },
+    "description": {
+      "package": "pkg/applicationserver",
+      "file": "observability.go"
+    }
+  },
+  "event:as.down.data.queue.invalidated.forward": {
+    "translations": {
+      "en": "forward downlink queue invalidated"
+    },
+    "description": {
+      "package": "pkg/applicationserver",
+      "file": "observability.go"
+    }
+  },
   "event:as.down.data.receive": {
     "translations": {
       "en": "receive downlink data message"
@@ -10052,6 +10088,15 @@
       "file": "observability.go"
     }
   },
+  "event:as.down.data.sent.forward": {
+    "translations": {
+      "en": "forward downlink sent"
+    },
+    "description": {
+      "package": "pkg/applicationserver",
+      "file": "observability.go"
+    }
+  },
   "event:as.end_device.batch.delete": {
     "translations": {
       "en": "batch delete end devices"
diff --git a/pkg/applicationserver/observability.go b/pkg/applicationserver/observability.go
index 90a8a0fcc8..ea43a58763 100644
--- a/pkg/applicationserver/observability.go
+++ b/pkg/applicationserver/observability.go
@@ -146,6 +146,36 @@ var (
 		events.WithDataType(&ttnpb.ApplicationDownlink{}),
 		events.WithPropagateToParent(),
 	)
+	evtForwardDownlinkQueueInvalidated = events.Define(
+		"as.down.data.queue.invalidated.forward", "forward downlink queue invalidated",
+		events.WithVisibility(ttnpb.Right_RIGHT_APPLICATION_TRAFFIC_READ),
+		events.WithDataType(&ttnpb.ApplicationUp{}),
+		events.WithPropagateToParent(),
+	)
+	evtForwardDownlinkFailed = events.Define(
+		"as.down.data.failed.forward", "forward downlink failed",
+		events.WithVisibility(ttnpb.Right_RIGHT_APPLICATION_TRAFFIC_READ),
+		events.WithDataType(&ttnpb.ApplicationUp{}),
+		events.WithPropagateToParent(),
+	)
+	evtForwardDownlinkSent = events.Define(
+		"as.down.data.sent.forward", "forward downlink sent",
+		events.WithVisibility(ttnpb.Right_RIGHT_APPLICATION_TRAFFIC_READ),
+		events.WithDataType(&ttnpb.ApplicationUp{}),
+		events.WithPropagateToParent(),
+	)
+	evtForwardDownlinkAck = events.Define(
+		"as.down.data.ack.forward", "forward downlink acknowledged",
+		events.WithVisibility(ttnpb.Right_RIGHT_APPLICATION_TRAFFIC_READ),
+		events.WithDataType(&ttnpb.ApplicationUp{}),
+		events.WithPropagateToParent(),
+	)
+	evtForwardDownlinkNack = events.Define(
+		"as.down.data.nack.forward", "forward downlink not acknowledged",
+		events.WithVisibility(ttnpb.Right_RIGHT_APPLICATION_TRAFFIC_READ),
+		events.WithDataType(&ttnpb.ApplicationUp{}),
+		events.WithPropagateToParent(),
+	)
 )
 
 const (
@@ -283,6 +313,16 @@ func registerForwardUp(ctx context.Context, msg *ttnpb.ApplicationUp) {
 		events.Publish(evtForwardLocationSolved.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
 	case *ttnpb.ApplicationUp_ServiceData:
 		events.Publish(evtForwardServiceData.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
+	case *ttnpb.ApplicationUp_DownlinkQueueInvalidated:
+		events.Publish(evtForwardDownlinkQueueInvalidated.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
+	case *ttnpb.ApplicationUp_DownlinkFailed:
+		events.Publish(evtForwardDownlinkFailed.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
+	case *ttnpb.ApplicationUp_DownlinkSent:
+		events.Publish(evtForwardDownlinkSent.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
+	case *ttnpb.ApplicationUp_DownlinkAck:
+		events.Publish(evtForwardDownlinkAck.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
+	case *ttnpb.ApplicationUp_DownlinkNack:
+		events.Publish(evtForwardDownlinkNack.NewWithIdentifiersAndData(ctx, msg.EndDeviceIds, msg))
 	default:
 		return
 	}
diff --git a/pkg/webui/locales/ja.json b/pkg/webui/locales/ja.json
index 992f733f9d..7612b871bf 100644
--- a/pkg/webui/locales/ja.json
+++ b/pkg/webui/locales/ja.json
@@ -2706,13 +2706,18 @@
   "event:application.update": "アプリケーションを更新",
   "event:as.application.subscribe": "アプリケーションに登録",
   "event:as.application.unsubscribe": "アプリケーションから退出",
+  "event:as.down.data.ack.forward": "",
   "event:as.down.data.decode.fail": "ダウンリンクデータメッセージのデコード失敗",
   "event:as.down.data.decode.warning": "ダウンリンクデータメッセージのデコード警告",
   "event:as.down.data.drop": "ダウンリンクデータメッセージをドロップ",
   "event:as.down.data.encode.fail": "ダウンリンクデータメッセージのエンコード失敗",
   "event:as.down.data.encode.warning": "ダウンリンクデータメッセージのエンコード警告",
+  "event:as.down.data.failed.forward": "",
   "event:as.down.data.forward": "ダウンリンクデータメッセージの転送",
+  "event:as.down.data.nack.forward": "",
+  "event:as.down.data.queue.invalidated.forward": "",
   "event:as.down.data.receive": "ダウンリンクデータメッセージを受信",
+  "event:as.down.data.sent.forward": "",
   "event:as.end_device.batch.delete": "エンドデバイスをバッチ削除",
   "event:as.end_device.create": "エンドデバイスの作成",
   "event:as.end_device.delete": "エンドデバイスの削除",