diff --git a/ArduPlane/ArduPlane.cpp b/ArduPlane/ArduPlane.cpp
index d2fd53ca6f..10e7727b59 100644
--- a/ArduPlane/ArduPlane.cpp
+++ b/ArduPlane/ArduPlane.cpp
@@ -347,7 +347,6 @@ void Plane::airspeed_ratio_update(void)
     }
     const Vector3f &vg = gps.velocity();
     airspeed.update_calibration(vg, aparm.airspeed_max);
-    gcs_send_airspeed_calibration(vg);
 }
 
 
diff --git a/ArduPlane/GCS_Mavlink.cpp b/ArduPlane/GCS_Mavlink.cpp
index 09dcba97f1..0599b84eb9 100644
--- a/ArduPlane/GCS_Mavlink.cpp
+++ b/ArduPlane/GCS_Mavlink.cpp
@@ -1416,14 +1416,6 @@ void Plane::mavlink_delay_cb()
     logger.EnableWrites(true);
 }
 
-/*
-  send airspeed calibration data
- */
-void Plane::gcs_send_airspeed_calibration(const Vector3f &vg)
-{
-    gcs().send_airspeed_calibration(vg);
-}
-
 void GCS_MAVLINK_Plane::handle_mission_set_current(AP_Mission &mission, mavlink_message_t *msg)
 {
     plane.auto_state.next_wp_crosstrack = false;
diff --git a/ArduPlane/GCS_Plane.cpp b/ArduPlane/GCS_Plane.cpp
index e93c68eb8d..aeb2d96264 100644
--- a/ArduPlane/GCS_Plane.cpp
+++ b/ArduPlane/GCS_Plane.cpp
@@ -1,17 +1,6 @@
 #include "GCS_Plane.h"
 #include "Plane.h"
 
-void GCS_Plane::send_airspeed_calibration(const Vector3f &vg)
-{
-    for (uint8_t i=0; i<num_gcs(); i++) {
-        if (_chan[i].initialised) {
-            if (HAVE_PAYLOAD_SPACE((mavlink_channel_t)i, AIRSPEED_AUTOCAL)) {
-                plane.airspeed.log_mavlink_send((mavlink_channel_t)i, vg);
-            }
-        }
-    }
-}
-
 // update error mask of sensors and subsystems. The mask
 // uses the MAV_SYS_STATUS_* values from mavlink. If a bit is set
 // then it indicates that the sensor or subsystem is present but
diff --git a/ArduPlane/GCS_Plane.h b/ArduPlane/GCS_Plane.h
index 36fceb55b6..c4c0e67ab7 100644
--- a/ArduPlane/GCS_Plane.h
+++ b/ArduPlane/GCS_Plane.h
@@ -20,8 +20,6 @@ public:
         return _chan[ofs];
     };
 
-    void send_airspeed_calibration(const Vector3f &vg);
-
 protected:
 
     void update_sensor_status_flags(void) override;
diff --git a/ArduPlane/Plane.h b/ArduPlane/Plane.h
index 0e998f47f7..721bacf96a 100644
--- a/ArduPlane/Plane.h
+++ b/ArduPlane/Plane.h
@@ -796,8 +796,6 @@ private:
 
     void send_aoa_ssa(mavlink_channel_t chan);
 
-    void gcs_send_airspeed_calibration(const Vector3f &vg);
-
     void Log_Write_Fast(void);
     void Log_Write_Attitude(void);
     void Log_Write_Performance();