diff --git a/ArduPlane/ArduPlane.cpp b/ArduPlane/ArduPlane.cpp
index 264b2416fb..fd538db7c3 100644
--- a/ArduPlane/ArduPlane.cpp
+++ b/ArduPlane/ArduPlane.cpp
@@ -147,7 +147,7 @@ void Plane::ahrs_update()
     ahrs.update();
 
     if (should_log(MASK_LOG_IMU)) {
-        Log_Write_IMU();
+        DataFlash.Log_Write_IMU();
     }
 
     // calculate a scaled roll limit based on current pitch
@@ -244,10 +244,10 @@ void Plane::update_logging1(void)
     }
 
     if (should_log(MASK_LOG_ATTITUDE_MED) && !should_log(MASK_LOG_IMU))
-        Log_Write_IMU();
+        DataFlash.Log_Write_IMU();
 
     if (should_log(MASK_LOG_ATTITUDE_MED))
-        Log_Write_AOA_SSA();
+        DataFlash.Log_Write_AOA_SSA(ahrs);
 }
 
 /*
diff --git a/ArduPlane/Log.cpp b/ArduPlane/Log.cpp
index fa0cf0f262..4b244108c6 100644
--- a/ArduPlane/Log.cpp
+++ b/ArduPlane/Log.cpp
@@ -272,11 +272,6 @@ void Plane::Log_Write_AETR()
     DataFlash.WriteBlock(&pkt, sizeof(pkt));
 }
 
-void Plane::Log_Write_IMU()
-{
-    DataFlash.Log_Write_IMU();
-}
-
 void Plane::Log_Write_RC(void)
 {
     DataFlash.Log_Write_RCIN();
@@ -287,18 +282,6 @@ void Plane::Log_Write_RC(void)
     Log_Write_AETR();
 }
 
-// Write a AIRSPEED packet
-void Plane::Log_Write_Airspeed(void)
-{
-    DataFlash.Log_Write_Airspeed(airspeed);
-}
-
-// Write a AOA and SSA packet
-void Plane::Log_Write_AOA_SSA(void)
-{
-    DataFlash.Log_Write_AOA_SSA(ahrs);
-}
-
 // log ahrs home and EKF origin to dataflash
 void Plane::Log_Write_Home_And_Origin()
 {
@@ -375,7 +358,6 @@ void Plane::log_init(void)
 
 #else // LOGGING_ENABLED
 
-void Plane::Log_Write_AOA_SSA(void) {}
 void Plane::Log_Write_Attitude(void) {}
 void Plane::Log_Write_Fast(void) {}
 void Plane::Log_Write_Performance() {}
@@ -390,9 +372,7 @@ void Plane::Log_Write_Optflow() {}
  #endif
 
 void Plane::Log_Arm_Disarm() {}
-void Plane::Log_Write_IMU() {}
 void Plane::Log_Write_RC(void) {}
-void Plane::Log_Write_Airspeed(void) {}
 void Plane::Log_Write_Home_And_Origin() {}
 void Plane::Log_Write_Vehicle_Startup_Messages() {}
 
diff --git a/ArduPlane/Plane.h b/ArduPlane/Plane.h
index 4ee45c3307..191fe21ab4 100644
--- a/ArduPlane/Plane.h
+++ b/ArduPlane/Plane.h
@@ -800,9 +800,7 @@ private:
     void Log_Write_Sonar();
     void Log_Write_Optflow();
     void Log_Arm_Disarm();
-    void Log_Write_IMU();
     void Log_Write_RC(void);
-    void Log_Write_Airspeed(void);
     void Log_Write_Home_And_Origin();
     void Log_Write_Vehicle_Startup_Messages();
     void Log_Write_AOA_SSA();
diff --git a/ArduPlane/sensors.cpp b/ArduPlane/sensors.cpp
index fff787a21a..0e4a82b83a 100644
--- a/ArduPlane/sensors.cpp
+++ b/ArduPlane/sensors.cpp
@@ -73,7 +73,7 @@ void Plane::read_airspeed(void)
     if (airspeed.enabled()) {
         airspeed.read();
         if (should_log(MASK_LOG_IMU)) {
-            Log_Write_Airspeed();
+            DataFlash.Log_Write_Airspeed(airspeed);
         }
 
         // supply a new temperature to the barometer from the digital