diff --git a/ArduCopter/radio.pde b/ArduCopter/radio.pde
index 165f4d5968..cd2ceb2026 100644
--- a/ArduCopter/radio.pde
+++ b/ArduCopter/radio.pde
@@ -5,7 +5,7 @@
 static int8_t failsafeCounter = 0;		// we wait a second to take over the throttle and send the plane circling
 
 
-extern RC_Channel* rc_ch[8];
+extern RC_Channel* rc_ch[NUM_CHANNELS];
 
 static void default_dead_zones()
 {
@@ -65,9 +65,12 @@ static void init_rc_out()
 	APM_RC.Init( &isr_registry );		// APM Radio initialization
 
 #if CONFIG_APM_HARDWARE != APM_HARDWARE_APM1
-  APM_RC.enable_out(CH_9);
-  APM_RC.enable_out(CH_10);
-  APM_RC.enable_out(CH_11);
+	APM_RC.enable_out(CH_9);
+	APM_RC.enable_out(CH_10);
+	APM_RC.enable_out(CH_11);
+  	APM_RC.OutputCh(CH_9, 	g.rc_9.radio_trim);
+	APM_RC.OutputCh(CH_10,	g.rc_10.radio_trim);
+	APM_RC.OutputCh(CH_11,	g.rc_11.radio_trim);
 #endif
 	#if INSTANT_PWM == 1
 	motors.set_update_rate(AP_MOTORS_SPEED_INSTANT_PWM);
diff --git a/ArduPlane/Attitude.pde b/ArduPlane/Attitude.pde
index df7b64b4bd..c26fa3eb3e 100644
--- a/ArduPlane/Attitude.pde
+++ b/ArduPlane/Attitude.pde
@@ -421,6 +421,11 @@ static void set_servos(void)
 	g.rc_6.output_ch(CH_6);
 	g.rc_7.output_ch(CH_7);
 	g.rc_8.output_ch(CH_8);
+# if CONFIG_APM_HARDWARE != APM_HARDWARE_APM1
+	g.rc_9.output_ch(CH_9);
+	g.rc_10.output_ch(CH_10);
+	g.rc_11.output_ch(CH_11);
+# endif
 #endif
 }
 
diff --git a/ArduPlane/radio.pde b/ArduPlane/radio.pde
index 3066de5682..8127519230 100644
--- a/ArduPlane/radio.pde
+++ b/ArduPlane/radio.pde
@@ -5,7 +5,7 @@
 static byte failsafeCounter = 0;		// we wait a second to take over the throttle and send the plane circling
 
 
-extern RC_Channel* rc_ch[8];
+extern RC_Channel* rc_ch[NUM_CHANNELS];
 
 static void init_rc_in()
 {
diff --git a/libraries/RC_Channel/RC_Channel.cpp b/libraries/RC_Channel/RC_Channel.cpp
index 83b4372297..aed36883d4 100644
--- a/libraries/RC_Channel/RC_Channel.cpp
+++ b/libraries/RC_Channel/RC_Channel.cpp
@@ -24,7 +24,7 @@
 
 /// global array with pointers to all APM RC channels, will be used by AP_Mount and AP_Camera classes
 /// It points to RC input channels, both APM1 and APM2 only have 8 input channels.
-RC_Channel* rc_ch[8];
+RC_Channel* rc_ch[NUM_CHANNELS];
 
 APM_RC_Class *RC_Channel::_apm_rc;