diff --git a/src/modules/mavlink/mavlink_events.cpp b/src/modules/mavlink/mavlink_events.cpp
index c1596530d4..135cf154d2 100644
--- a/src/modules/mavlink/mavlink_events.cpp
+++ b/src/modules/mavlink/mavlink_events.cpp
@@ -208,17 +208,18 @@ void SendProtocol::handle_request_event(const mavlink_message_t &msg) const
 
 void SendProtocol::send_event(const Event &event) const
 {
-	mavlink_event_t event_msg{};
-	event_msg.event_time_boot_ms = event.timestamp_ms;
-	event_msg.destination_component = MAV_COMP_ID_ALL;
-	event_msg.destination_system = 0;
-	event_msg.id = event.id;
-	event_msg.sequence = event.sequence;
-	event_msg.log_levels = event.log_levels;
-	static_assert(sizeof(event_msg.arguments) >= sizeof(event.arguments), "MAVLink message arguments buffer too small");
-	memcpy(&event_msg.arguments, event.arguments, sizeof(event.arguments));
-	mavlink_msg_event_send_struct(_mavlink.get_channel(), &event_msg);
-
+	if (_mavlink.get_mode() != Mavlink::MAVLINK_MODE_IRIDIUM) {
+		mavlink_event_t event_msg{};
+		event_msg.event_time_boot_ms = event.timestamp_ms;
+		event_msg.destination_component = MAV_COMP_ID_ALL;
+		event_msg.destination_system = 0;
+		event_msg.id = event.id;
+		event_msg.sequence = event.sequence;
+		event_msg.log_levels = event.log_levels;
+		static_assert(sizeof(event_msg.arguments) >= sizeof(event.arguments), "MAVLink message arguments buffer too small");
+		memcpy(&event_msg.arguments, event.arguments, sizeof(event.arguments));
+		mavlink_msg_event_send_struct(_mavlink.get_channel(), &event_msg);
+	}
 }
 
 void SendProtocol::on_gcs_connected()
@@ -228,8 +229,9 @@ void SendProtocol::on_gcs_connected()
 
 void SendProtocol::send_current_sequence(const hrt_abstime &now, bool force_reset)
 {
-	// only send if enough tx buffer space available
-	if (_mavlink.get_free_tx_buf() < MAVLINK_MSG_ID_CURRENT_EVENT_SEQUENCE_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES) {
+	// only send if enough tx buffer space available or not MAVLINK_MODE_IRIDIUM
+	if (_mavlink.get_free_tx_buf() < MAVLINK_MSG_ID_CURRENT_EVENT_SEQUENCE_LEN + MAVLINK_NUM_NON_PAYLOAD_BYTES ||
+	    _mavlink.get_mode() == Mavlink::MAVLINK_MODE_IRIDIUM) {
 		return;
 	}