diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.cpp b/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.cpp
index 39abcc2ed6..d542beca8a 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.cpp
@@ -31,34 +31,29 @@ IUUmbilical::IUUmbilical(IUUmbilicalInterface *ml)
 {
 	IuUmb = ml;
 	iu = NULL;
-	IUUmbilicalConnected = false;
 }
 
 IUUmbilical::~IUUmbilical()
 {
+	Disconnect();
 }
 
 void IUUmbilical::Connect(IU *iu)
 {
 	if (iu)
 	{
-		this->iu = iu;
-		iu->ConnectUmbilical(this);
-		IUUmbilicalConnected = true;
+		iu->IuUmb = this;
 	}
+	this->iu = iu;
 }
 
 void IUUmbilical::Disconnect()
 {
-	if (!IUUmbilicalConnected) return;
-
-	iu->DisconnectUmbilical();
-	IUUmbilicalConnected = false;
-}
-
-void IUUmbilical::AbortDisconnect()
-{
-	IUUmbilicalConnected = false;
+	if (iu)
+	{
+		iu->IuUmb = NULL;
+		iu = NULL;
+	}
 }
 
 bool IUUmbilical::ESEGetCommandVehicleLiftoffIndicationInhibit()
@@ -153,161 +148,161 @@ bool IUUmbilical::ESEGetEDSLVCutoffSimulate(int n)
 
 void IUUmbilical::SetEDSLiftoffEnableA()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetEDS()->SetEDSLiftoffEnableA();
 }
 
 void IUUmbilical::SetEDSLiftoffEnableB()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetEDS()->SetEDSLiftoffEnableB();
 }
 
 void IUUmbilical::EDSLiftoffEnableReset()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetEDS()->LiftoffEnableReset();
 }
 
 void IUUmbilical::SwitchFCCPowerOn()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->SetFCCPower(true);
 }
 
 void IUUmbilical::SwitchFCCPowerOff()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->SetFCCPower(false);
 }
 
 void IUUmbilical::SwitchQBallPowerOn()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->SetQBallPower(true);
 }
 
 void IUUmbilical::SwitchQBallPowerOff()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->SetQBallPower(false);
 }
 
 bool IUUmbilical::AllSIEnginesRunning()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetAllSIEnginesRunning();
 }
 
 bool IUUmbilical::IsEDSUnsafeA()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->IsEDSUnsafeA();
 }
 
 bool IUUmbilical::IsEDSUnsafeB()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->IsEDSUnsafeB();
 }
 
 bool IUUmbilical::GetEDSSCCutoff1()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetLVEnginesCutoffFromSC1();
 }
 
 bool IUUmbilical::GetEDSSCCutoff2()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetLVEnginesCutoffFromSC2();
 }
 
 bool IUUmbilical::GetEDSSCCutoff3()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetLVEnginesCutoffFromSC3();
 }
 
 bool IUUmbilical::GetEDSAutoAbortBus()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetAutoAbort();
 }
 
 bool IUUmbilical::GetEDSExcessiveRollRateIndication()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetExcessiveRollRateIndication();
 }
 
 bool IUUmbilical::GetEDSExcessivePitchYawRateIndication()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetEDS()->GetExcessivePitchYawRateIndication();
 }
 
 bool IUUmbilical::GetLVDCOutputRegisterDiscrete(int bit)
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetLVDA()->GetOutputRegisterBit(bit);
 }
 
 bool IUUmbilical::FCCPowerIsOn()
 {
-	if (!IUUmbilicalConnected) return false;
+	if (!iu) return false;
 
 	return iu->GetControlDistributor()->GetFCCPowerOn();
 }
 
 void IUUmbilical::SetControlSignalProcessorPower(bool set)
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->SetControlSignalProcessorPowerOn(set);
 }
 
 void IUUmbilical::EDSGroupNo1Reset()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->ResetBus1();
 }
 
 void IUUmbilical::EDSGroupNo2Reset()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->ResetBus2();
 }
 
 void IUUmbilical::SwitchSelector(int stage, int channel)
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetControlDistributor()->SwitchSelector(stage, channel);
 }
 
 void IUUmbilical::LVDCPrepareToLaunch()
 {
-	if (!IUUmbilicalConnected) return;
+	if (!iu) return;
 
 	iu->GetLVDA()->PrepareToLaunch();
 }
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.h b/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.h
index 00abb27565..b843b6f442 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.h
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/IUUmbilical.h
@@ -33,12 +33,8 @@ class IUUmbilical
 	IUUmbilical(IUUmbilicalInterface *ml);
 	~IUUmbilical();
 
-	bool IsIUUmbilicalConnected() { return IUUmbilicalConnected; }
-
 	void Connect(IU* iu);
 	void Disconnect();
-	//Called by IU during a pad abort. Technically doesn't disconnect IU umbilical
-	virtual void AbortDisconnect();
 
 	//From ML to SLV
 	void SetEDSLiftoffEnableA();
@@ -84,9 +80,8 @@ class IUUmbilical
 	virtual bool ESEGetQBallSimulateCmd();
 	virtual bool ESEGetEDSAutoAbortSimulate(int n);
 	virtual bool ESEGetEDSLVCutoffSimulate(int n);
-protected:
+
 	IU* iu;
+protected:
 	IUUmbilicalInterface* IuUmb;
-
-	bool IUUmbilicalConnected;
 };
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.cpp b/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.cpp
index 2737ff1fe1..902e784599 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.cpp
@@ -34,43 +34,44 @@ SCMUmbilical::SCMUmbilical(TailUmbilicalInterface *ml) : TailUmbilical(ml)
 
 SCMUmbilical::~SCMUmbilical()
 {
+	Disconnect();
 }
 
 void SCMUmbilical::Connect(SIBSystems *sib)
 {
 	if (sib)
 	{
-		this->sib = sib;
-		sib->ConnectUmbilical(this);
-		UmbilicalConnected = true;
+		sib->SCMUmb = this;
 	}
+	this->sib = sib;
 }
 
 void SCMUmbilical::Disconnect()
 {
-	if (!UmbilicalConnected) return;
-
-	sib->DisconnectUmbilical();
-	UmbilicalConnected = false;
+	if (sib)
+	{
+		sib->SCMUmb = NULL;
+		sib = NULL;
+	}
 }
 
 bool SCMUmbilical::SIStageLogicCutoff()
 {
-	if (!UmbilicalConnected) return false;
+	if (!sib) return false;
 
 	return sib->GetEngineStop();
 }
 
 void SCMUmbilical::SetEngineStart(int eng)
 {
-	if (!UmbilicalConnected) return;
+	if (!sib) return;
 
 	sib->SetEngineStart(eng);
 }
 
 void SCMUmbilical::SIGSECutoff(bool cut)
 {
-	if (!UmbilicalConnected) return;
+	if (!sib) return;
 
 	sib->GSEEnginesCutoff(cut);
 }
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.h b/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.h
index 28808c6fd4..204a6607bf 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.h
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/SCMUmbilical.h
@@ -34,8 +34,6 @@ class SCMUmbilical : public TailUmbilical
 	SCMUmbilical(TailUmbilicalInterface *ml);
 	~SCMUmbilical();
 
-	bool IsUmbilicalConnected() { return UmbilicalConnected; }
-
 	void Connect(SIBSystems* sic);
 	void Disconnect();
 
@@ -44,6 +42,6 @@ class SCMUmbilical : public TailUmbilical
 	void SetEngineStart(int eng);
 	void SIGSECutoff(bool cut);
 
-protected:
 	SIBSystems* sib;
+protected:
 };
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.cpp b/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.cpp
index 0655981894..70dd329625 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.cpp
@@ -34,43 +34,44 @@ TSMUmbilical::TSMUmbilical(TailUmbilicalInterface *ml) : TailUmbilical(ml)
 
 TSMUmbilical::~TSMUmbilical()
 {
+	Disconnect();
 }
 
 void TSMUmbilical::Connect(SICSystems *sic)
 {
 	if (sic)
 	{
-		this->sic = sic;
-		sic->ConnectUmbilical(this);
-		UmbilicalConnected = true;
+		sic->TSMUmb = this;
 	}
+	this->sic = sic;
 }
 
 void TSMUmbilical::Disconnect()
 {
-	if (!UmbilicalConnected) return;
-
-	sic->DisconnectUmbilical();
-	UmbilicalConnected = false;
+	if (sic)
+	{
+		sic->TSMUmb = NULL;
+		sic = NULL;
+	}
 }
 
 bool TSMUmbilical::SIStageLogicCutoff()
 {
-	if (!UmbilicalConnected) return false;
+	if (!sic) return false;
 
 	return sic->GetEngineStop();
 }
 
 void TSMUmbilical::SetEngineStart(int eng)
 {
-	if (!UmbilicalConnected) return;
+	if (!sic) return;
 
 	sic->SetEngineStart(eng);
 }
 
 void TSMUmbilical::SIGSECutoff(bool cut)
 {
-	if (!UmbilicalConnected) return;
+	if (!sic) return;
 
 	sic->GSEEnginesCutoff(cut);
 }
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.h b/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.h
index 66fd9992d1..398969a158 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.h
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/TSMUmbilical.h
@@ -34,8 +34,6 @@ class TSMUmbilical : public TailUmbilical
 	TSMUmbilical(TailUmbilicalInterface *ml);
 	~TSMUmbilical();
 
-	bool IsUmbilicalConnected() { return UmbilicalConnected; }
-
 	void Connect(SICSystems* sic);
 	void Disconnect();
 
@@ -43,6 +41,8 @@ class TSMUmbilical : public TailUmbilical
 	bool SIStageLogicCutoff();
 	void SetEngineStart(int eng);
 	void SIGSECutoff(bool cut);
-protected:
+
 	SICSystems* sic;
+protected:
+
 };
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.cpp b/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.cpp
index ba72a8dfcc..2015a6f494 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.cpp
@@ -27,7 +27,7 @@ See http://nassp.sourceforge.net/license/ for more details.
 
 TailUmbilical::TailUmbilical(TailUmbilicalInterface *ml) : TailUmb(ml)
 {
-	UmbilicalConnected = false;
+
 }
 
 TailUmbilical::~TailUmbilical()
@@ -35,11 +35,6 @@ TailUmbilical::~TailUmbilical()
 
 }
 
-void TailUmbilical::AbortDisconnect()
-{
-	UmbilicalConnected = false;
-}
-
 bool TailUmbilical::ESEGetSIThrustOKSimulate(int eng, int n)
 {
 	return TailUmb->ESEGetSIThrustOKSimulate(eng, n);
diff --git a/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.h b/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.h
index 400d388091..f2e6d2c267 100644
--- a/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.h
+++ b/Orbitersdk/samples/ProjectApollo/src_launch/TailUmbilical.h
@@ -34,9 +34,6 @@ class TailUmbilical
 
 	virtual void Disconnect() = 0;
 
-	//Called by IU during a pad abort. Technically doesn't disconnect IU umbilical
-	virtual void AbortDisconnect();
-
 	//From SLV to ML
 	virtual bool ESEGetSIThrustOKSimulate(int eng, int n);
 
@@ -45,6 +42,5 @@ class TailUmbilical
 	virtual void SetEngineStart(int eng) = 0;
 	virtual void SIGSECutoff(bool cut) = 0;
 protected:
-	bool UmbilicalConnected;
 	TailUmbilicalInterface* TailUmb;
 };
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_saturn/iu.cpp b/Orbitersdk/samples/ProjectApollo/src_saturn/iu.cpp
index 8b8ec82985..52c660ab58 100644
--- a/Orbitersdk/samples/ProjectApollo/src_saturn/iu.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_saturn/iu.cpp
@@ -59,10 +59,7 @@ ControlSignalProcessor(this)
 
 IU::~IU()
 {
-	if (IuUmb)
-	{
-		IuUmb->AbortDisconnect();
-	}
+	DisconnectUmbilical();
 }
 
 void IU::SetMissionInfo(bool crewed, bool sccontpowered)
@@ -253,19 +250,18 @@ bool IU::DCSUplink(int type, void *upl)
 
 bool IU::IsUmbilicalConnected()
 {
-	if (IuUmb && IuUmb->IsIUUmbilicalConnected()) return true;
+	if (IuUmb) return true;
 
 	return false;
 }
 
-void IU::ConnectUmbilical(IUUmbilical *umb)
-{
-	IuUmb = umb;
-}
-
 void IU::DisconnectUmbilical()
 {
-	IuUmb = NULL;
+	if (IuUmb)
+	{
+		IuUmb->iu = NULL;
+		IuUmb = NULL;
+	}
 }
 
 void IU::DisconnectIU()
diff --git a/Orbitersdk/samples/ProjectApollo/src_saturn/iu.h b/Orbitersdk/samples/ProjectApollo/src_saturn/iu.h
index 25e7f44a65..c3cb40122c 100644
--- a/Orbitersdk/samples/ProjectApollo/src_saturn/iu.h
+++ b/Orbitersdk/samples/ProjectApollo/src_saturn/iu.h
@@ -282,9 +282,6 @@ class IU {
 	bool GetSCControlPoweredFlight() { return SCControlPoweredFlight; }
 	VECTOR3 GetTheodoliteAlignment(double azimuth);
 
-	virtual void ConnectUmbilical(IUUmbilical *umb);
-	virtual void DisconnectUmbilical();
-
 	virtual bool DCSUplink(int type, void *upl);
 
 	IUToCSMCommandConnector* GetCommandConnector() { return &commandConnector; }
@@ -324,7 +321,9 @@ class IU {
 	virtual bool ESEGetSICOutboardEnginesCantInhibit() { return false; }
 	virtual bool ESEGetSICOutboardEnginesCantSimulate() { return false; }
 
+	IUUmbilical *IuUmb;
 protected:
+	void DisconnectUmbilical();
 
 	int State;
 
@@ -363,8 +362,6 @@ class IU {
 	IUAuxiliaryPowerDistributor2 AuxiliaryPowerDistributor2;
 	//601A24
 	IUControlSignalProcessor ControlSignalProcessor;
-
-	IUUmbilical *IuUmb;
 };
 
 class IU1B :public IU
diff --git a/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.cpp b/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.cpp
index 4b8971c9ff..63314ca884 100644
--- a/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.cpp
@@ -310,6 +310,11 @@ SIBSystems::SIBSystems(VESSEL *v, THRUSTER_HANDLE *h1, PROPELLANT_HANDLE &h1prop
 	SCMUmb = NULL;
 }
 
+SIBSystems::~SIBSystems()
+{
+	DisconnectUmbilical();
+}
+
 void SIBSystems::SaveState(FILEHANDLE scn) {
 	oapiWriteLine(scn, SISYSTEMS_START_STRING);
 
@@ -801,11 +806,6 @@ void SIBSystems::SwitchSelector(int channel)
 	}
 }
 
-void SIBSystems::ConnectUmbilical(SCMUmbilical *umb)
-{
-	SCMUmb = umb;
-}
-
 void SIBSystems::DisconnectUmbilical()
 {
 	SCMUmb = NULL;
@@ -813,7 +813,7 @@ void SIBSystems::DisconnectUmbilical()
 
 bool SIBSystems::IsUmbilicalConnected()
 {
-	if (SCMUmb && SCMUmb->IsUmbilicalConnected()) return true;
+	if (SCMUmb) return true;
 
 	return false;
 }
diff --git a/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.h b/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.h
index 7ee3d0f526..40749006de 100644
--- a/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.h
+++ b/Orbitersdk/samples/ProjectApollo/src_saturn/s1bsystems.h
@@ -78,6 +78,7 @@ class SIBSystems
 {
 public:
 	SIBSystems(VESSEL *v, THRUSTER_HANDLE *h1, PROPELLANT_HANDLE &h1prop, Pyro &SIB_SIVB_Sep, Sound &LaunchS, Sound &SShutS);
+	~SIBSystems();
 	void Timestep(double misst, double simdt);
 	void SaveState(FILEHANDLE scn);
 	void LoadState(FILEHANDLE scn);
@@ -108,12 +109,12 @@ class SIBSystems
 	virtual bool GetEngineStop();
 	bool FireRetroRockets();
 
-	virtual void ConnectUmbilical(SCMUmbilical *umb);
-	virtual void DisconnectUmbilical();
-	bool IsUmbilicalConnected();
+	SCMUmbilical *SCMUmb;
 protected:
 	double GetSumThrust();
 	bool ESEGetSIBThrustOKSimulate(int eng, int n);
+	void DisconnectUmbilical();
+	bool IsUmbilicalConnected();
 
 	VESSEL *vessel;
 	PROPELLANT_HANDLE &main_propellant;
@@ -200,6 +201,4 @@ class SIBSystems
 	bool ThrustOK[24];
 
 	bool OutboardEnginesCutoffSignal;
-
-	SCMUmbilical *SCMUmb;
 };
\ No newline at end of file
diff --git a/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.cpp b/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.cpp
index 9623fd76ec..0890c7d987 100644
--- a/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.cpp
+++ b/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.cpp
@@ -295,10 +295,7 @@ SICSystems::SICSystems(VESSEL *v, THRUSTER_HANDLE *f1, PROPELLANT_HANDLE &f1prop
 
 SICSystems::~SICSystems()
 {
-	if (TSMUmb)
-	{
-		TSMUmb->AbortDisconnect();
-	}
+	DisconnectUmbilical();
 }
 
 void SICSystems::SaveState(FILEHANDLE scn) {
@@ -600,19 +597,17 @@ bool SICSystems::GetEngineStop()
 	return false;
 }
 
-void SICSystems::ConnectUmbilical(TSMUmbilical *umb)
-{
-	TSMUmb = umb;
-}
-
 void SICSystems::DisconnectUmbilical()
 {
-	TSMUmb = NULL;
+	if (TSMUmb)
+	{
+		TSMUmb = NULL;
+	}
 }
 
 bool SICSystems::IsUmbilicalConnected()
 {
-	if (TSMUmb && TSMUmb->IsUmbilicalConnected()) return true;
+	if (TSMUmb) return true;
 
 	return false;
 }
diff --git a/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.h b/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.h
index 648f240e14..9d67270eb9 100644
--- a/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.h
+++ b/Orbitersdk/samples/ProjectApollo/src_saturn/s1csystems.h
@@ -106,14 +106,13 @@ class SICSystems
 
 	virtual bool GetEngineStop();
 
-	virtual void ConnectUmbilical(TSMUmbilical *umb);
-	virtual void DisconnectUmbilical();
-	bool IsUmbilicalConnected();
+	TSMUmbilical *TSMUmb;
 protected:
-
 	bool TripleVoting(bool vote1, bool vote2, bool vote3);
 	double GetSumThrust();
 	bool ESEGetSICThrustOKSimulate(int eng, int n);
+	void DisconnectUmbilical();
+	bool IsUmbilicalConnected();
 
 	VESSEL *vessel;
 	PROPELLANT_HANDLE &main_propellant;
@@ -140,6 +139,4 @@ class SICSystems
 	bool PointLevelSensorArmed;
 
 	bool ThrustOK[15];
-
-	TSMUmbilical *TSMUmb;
 };
\ No newline at end of file