From 204abfd45e71d7e0eb9971d1f21d45036015484d Mon Sep 17 00:00:00 2001
From: Tom Pittenger <magicrub@gmail.com>
Date: Tue, 7 Jun 2016 17:13:10 -0700
Subject: [PATCH] Plane: set heartbeat.system_status to Critical for
 low-battery failsafe events

---
 ArduPlane/GCS_Mavlink.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ArduPlane/GCS_Mavlink.cpp b/ArduPlane/GCS_Mavlink.cpp
index 3621c465fe..c7860ee6bf 100644
--- a/ArduPlane/GCS_Mavlink.cpp
+++ b/ArduPlane/GCS_Mavlink.cpp
@@ -14,7 +14,7 @@ void Plane::send_heartbeat(mavlink_channel_t chan)
     uint8_t system_status;
     uint32_t custom_mode = control_mode;
     
-    if (failsafe.state != FAILSAFE_NONE) {
+    if (failsafe.state != FAILSAFE_NONE || failsafe.low_battery) {
         system_status = MAV_STATE_CRITICAL;
     } else if (plane.crash_state.is_crashed) {
         system_status = MAV_STATE_EMERGENCY;