diff --git a/src/FGFDMExec.cpp b/src/FGFDMExec.cpp
index d078cfb8ad..6f3f138709 100644
--- a/src/FGFDMExec.cpp
+++ b/src/FGFDMExec.cpp
@@ -76,7 +76,7 @@ using namespace std;
 
 namespace JSBSim {
 
-IDENT(IdSrc,"$Id: FGFDMExec.cpp,v 1.168 2015/01/31 14:56:21 bcoconni Exp $");
+IDENT(IdSrc,"$Id: FGFDMExec.cpp,v 1.169 2015/01/31 15:08:59 bcoconni Exp $");
 IDENT(IdHdr,ID_FDMEXEC);
 
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -282,6 +282,7 @@ bool FGFDMExec::Allocate(void)
   Models[eInput]             = new FGInput(this);
   Models[eAtmosphere]        = new FGStandardAtmosphere(this);
   Models[eWinds]             = new FGWinds(this);
+  Models[eMassBalance]       = new FGMassBalance(this);
   Models[eAuxiliary]         = new FGAuxiliary(this);
   Models[eSystems]           = new FGFCS(this);
   Models[ePropulsion]        = new FGPropulsion(this);
@@ -289,7 +290,6 @@ bool FGFDMExec::Allocate(void)
   Models[eGroundReactions]   = new FGGroundReactions(this);
   Models[eExternalReactions] = new FGExternalReactions(this);
   Models[eBuoyantForces]     = new FGBuoyantForces(this);
-  Models[eMassBalance]       = new FGMassBalance(this);
   Models[eAircraft]          = new FGAircraft(this);
   Models[eAccelerations]     = new FGAccelerations(this);
   Models[eOutput]            = new FGOutput(this);
@@ -299,6 +299,7 @@ bool FGFDMExec::Allocate(void)
   Inertial = (FGInertial*)Models[eInertial];
   Atmosphere = (FGAtmosphere*)Models[eAtmosphere];
   Winds = (FGWinds*)Models[eWinds];
+  MassBalance = (FGMassBalance*)Models[eMassBalance];
   Auxiliary = (FGAuxiliary*)Models[eAuxiliary];
   FCS = (FGFCS*)Models[eSystems];
   Propulsion = (FGPropulsion*)Models[ePropulsion];
@@ -306,7 +307,6 @@ bool FGFDMExec::Allocate(void)
   GroundReactions = (FGGroundReactions*)Models[eGroundReactions];
   ExternalReactions = (FGExternalReactions*)Models[eExternalReactions];
   BuoyantForces = (FGBuoyantForces*)Models[eBuoyantForces];
-  MassBalance = (FGMassBalance*)Models[eMassBalance];
   Aircraft = (FGAircraft*)Models[eAircraft];
   Accelerations = (FGAccelerations*)Models[eAccelerations];
   Output = (FGOutput*)Models[eOutput];
@@ -351,14 +351,6 @@ bool FGFDMExec::DeAllocate(void)
 
 //%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-void FGFDMExec::Schedule(FGModel* model, int rate)
-{
-  model->SetRate(rate);
-  Models.push_back(model);
-}
-
-//%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-
 bool FGFDMExec::Run(void)
 {
   bool success=true;
diff --git a/src/FGFDMExec.h b/src/FGFDMExec.h
index b583602f98..8fa2e9308d 100644
--- a/src/FGFDMExec.h
+++ b/src/FGFDMExec.h
@@ -54,7 +54,7 @@ INCLUDES
 DEFINITIONS
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%*/
 
-#define ID_FDMEXEC "$Id: FGFDMExec.h,v 1.93 2014/11/30 13:06:05 bcoconni Exp $"
+#define ID_FDMEXEC "$Id: FGFDMExec.h,v 1.94 2015/01/31 15:08:59 bcoconni Exp $"
 
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 FORWARD DECLARATIONS
@@ -178,7 +178,7 @@ CLASS DOCUMENTATION
                                 property actually maps toa function call of DoTrim().
 
     @author Jon S. Berndt
-    @version $Revision: 1.93 $
+    @version $Revision: 1.94 $
 */
 
 /*%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -228,6 +228,7 @@ class FGFDMExec : public FGJSBBase
                  eInertial,
                  eAtmosphere,
                  eWinds,
+                 eMassBalance,
                  eAuxiliary,
                  eSystems,
                  ePropulsion,
@@ -235,7 +236,6 @@ class FGFDMExec : public FGJSBBase
                  eGroundReactions,
                  eExternalReactions,
                  eBuoyantForces,
-                 eMassBalance,
                  eAircraft,
                  eAccelerations,
                  eOutput,
@@ -244,19 +244,6 @@ class FGFDMExec : public FGJSBBase
   /** Unbind all tied JSBSim properties. */
   void Unbind(void) {instance->Unbind();}
 
-  /** This routine places a model into the runlist at the specified rate. The
-      "rate" is not really a clock rate. It represents how many calls to the
-      FGFDMExec::Run() method must be made before the model is executed. A
-      value of 1 means that the model will be executed for each call to the
-      exec's Run() method. A value of 5 means that the model will only be
-      executed every 5th call to the exec's Run() method. Use of a rate other than
-      one is at this time not recommended.
-      @param model A pointer to the model being scheduled.
-      @param rate The rate at which to execute the model as described above.
-                  Default is every frame (rate=1).
-      @return Currently returns 0 always. */
-  void Schedule(FGModel* model, int rate=1);
-
   /** This function executes each scheduled model in succession.
       @return true if successful, false if sim should be ended  */
   bool Run(void);