diff --git a/src/Aircraft/controls.cxx b/src/Aircraft/controls.cxx
index 2995136..e57c4c8 100644
--- a/src/Aircraft/controls.cxx
+++ b/src/Aircraft/controls.cxx
@@ -241,10 +241,14 @@ FGControls::bind ()
   fgTie("/controls/flight/elevator", this,
        &FGControls::get_elevator, &FGControls::set_elevator);
   fgSetArchivable("/controls/flight/elevator");
+  fgTie("/controls/flight/flipper", this,
+       &FGControls::get_flipper, &FGControls::set_flipper);
 
   fgTie("/controls/flight/elevator-trim", this,
        &FGControls::get_elevator_trim, &FGControls::set_elevator_trim);
   fgSetArchivable("/controls/flight/elevator-trim");
+  fgTie("/controls/flight/flipper-trim", this,
+       &FGControls::get_flipper_trim, &FGControls::set_flipper_trim);
 
   fgTie("/controls/flight/rudder", this,
        &FGControls::get_rudder, &FGControls::set_rudder);
@@ -835,6 +839,8 @@ void FGControls::unbind ()
   fgUntie("/controls/flight/aileron-trim");
   fgUntie("/controls/flight/elevator");
   fgUntie("/controls/flight/elevator-trim");
+  fgUntie("/controls/flight/flipper");
+  fgUntie("/controls/flight/flipper-trim");
   fgUntie("/controls/flight/rudder");
   fgUntie("/controls/flight/rudder-trim");
   fgUntie("/controls/flight/flaps");
@@ -1103,6 +1109,12 @@ FGControls::set_elevator( double pos )
     elevator = pos;
     CLAMP( &elevator, -1.0, 1.0 );
 }
+void
+FGControls::set_flipper( double pos )
+{
+    elevator = -pos;
+    CLAMP( &elevator, -1.0, 1.0 );
+}
 
 void
 FGControls::move_elevator( double amt )
@@ -1117,6 +1129,12 @@ FGControls::set_elevator_trim( double pos )
     elevator_trim = pos;
     CLAMP( &elevator_trim, -1.0, 1.0 );
 }
+void
+FGControls::set_flipper_trim( double pos )
+{
+    elevator_trim = -pos;
+    CLAMP( &elevator_trim, -1.0, 1.0 );
+}
 
 void
 FGControls::move_elevator_trim( double amt )
diff --git a/src/Aircraft/controls.hxx b/src/Aircraft/controls.hxx
index 7df7ef6..4b2b77f 100644
--- a/src/Aircraft/controls.hxx
+++ b/src/Aircraft/controls.hxx
@@ -280,7 +280,9 @@ public:
     inline double get_aileron() const { return aileron; }
     inline double get_aileron_trim() const { return aileron_trim; }
     inline double get_elevator() const { return elevator; }
+    inline double get_flipper() const { return -elevator; }
     inline double get_elevator_trim() const { return elevator_trim; }
+    inline double get_flipper_trim() const { return -elevator_trim; }
     inline double get_rudder() const { return rudder; }
     inline double get_rudder_trim() const { return rudder_trim; }
     inline double get_flaps() const { return flaps; }
@@ -465,8 +467,10 @@ public:
     void set_aileron_trim( double pos );
     void move_aileron_trim( double amt );
     void set_elevator( double pos );
+    void set_flipper( double pos );
     void move_elevator( double amt );
     void set_elevator_trim( double pos );
+    void set_flipper_trim( double pos );
     void move_elevator_trim( double amt );
     void set_rudder( double pos );
     void move_rudder( double amt );