diff --git a/LEGO1/lego/legoomni/include/helicopter.h b/LEGO1/lego/legoomni/include/helicopter.h
index b5738be7..23285f1e 100644
--- a/LEGO1/lego/legoomni/include/helicopter.h
+++ b/LEGO1/lego/legoomni/include/helicopter.h
@@ -48,6 +48,7 @@ class HelicopterState : public LegoState {
 };
 
 // VTABLE: LEGO1 0x100d40f8
+// VTABLE: BETA10 0x101b9880
 // SIZE 0x230
 class Helicopter : public IslePathActor {
 public:
@@ -55,6 +56,7 @@ class Helicopter : public IslePathActor {
 	~Helicopter() override; // vtable+0x00
 
 	// FUNCTION: LEGO1 0x10003070
+	// FUNCTION: BETA10 0x1002b300
 	const char* ClassName() const override // vtable+0x0c
 	{
 		// STRING: LEGO1 0x100f0130
@@ -62,6 +64,7 @@ class Helicopter : public IslePathActor {
 	}
 
 	// FUNCTION: LEGO1 0x10003080
+	// FUNCTION: BETA10 0x1002b330
 	MxBool IsA(const char* p_name) const override // vtable+0x10
 	{
 		return !strcmp(p_name, Helicopter::ClassName()) || IslePathActor::IsA(p_name);
diff --git a/LEGO1/lego/legoomni/include/legocameracontroller.h b/LEGO1/lego/legoomni/include/legocameracontroller.h
index ec43aa6c..c4a10146 100644
--- a/LEGO1/lego/legoomni/include/legocameracontroller.h
+++ b/LEGO1/lego/legoomni/include/legocameracontroller.h
@@ -38,6 +38,7 @@ class LegoCameraController : public LegoPointOfViewController {
 	void SetWorldTransform(const Vector3& p_at, const Vector3& p_dir, const Vector3& p_up);
 	void FUN_10012290(float p_angle);
 	void FUN_10012320(float p_angle);
+	MxResult FUN_100123b0(Matrix4& p_matrix);
 	void FUN_100123e0(const Matrix4& p_transform, MxU32 p_und);
 	Mx3DPointFloat GetWorldUp();
 	Mx3DPointFloat GetWorldLocation();
diff --git a/LEGO1/lego/legoomni/src/actors/helicopter.cpp b/LEGO1/lego/legoomni/src/actors/helicopter.cpp
index c8d63a5c..1d7f78e3 100644
--- a/LEGO1/lego/legoomni/src/actors/helicopter.cpp
+++ b/LEGO1/lego/legoomni/src/actors/helicopter.cpp
@@ -14,6 +14,8 @@
 #include "legoworld.h"
 #include "misc.h"
 #include "mxdebug.h"
+#include "mxmisc.h"
+#include "mxtimer.h"
 #include "mxtransitionmanager.h"
 #include "scripts.h"
 
@@ -405,7 +407,7 @@ void Helicopter::Animate(float p_time)
 			Vector3 v2(m_unk0x1a8[3]);
 			float* loc = m_unk0x1a8[3];
 			mat.SetIdentity();
-			m_unk0x1f4.Unknown6(mat, f2);
+			m_unk0x1f4.BETA_1004aaa0(mat, f2);
 			v2.SetVector(loc);
 			v2 -= v;
 			v2 *= f2;
@@ -425,10 +427,47 @@ void Helicopter::Animate(float p_time)
 	}
 }
 
-// STUB: LEGO1 0x100042a0
+// FUNCTION: LEGO1 0x100042a0
 void Helicopter::FUN_100042a0(const Matrix4& p_matrix)
 {
-	// TODO
+	MxMatrix local48;
+	MxMatrix local90;
+
+	Vector3 vec1(local48[3]);    // local98  // esp+0x30
+	Vector3 vec2(local90[3]);    // localac  // esp+0x1c
+	Vector3 vec3(m_unk0x1a8[0]); // locala8  // esp+0x20
+	Vector3 vec4(m_unk0x1a8[1]); // localb8  // esp+0x10
+	Vector3 vec5(m_unk0x1a8[2]); // EDI
+	Vector3 vec6(m_unk0x1a8[3]); // locala0  // esp+0x28
+
+	m_world->GetCamera()->FUN_100123b0(local48);
+	m_unk0x1a8.SetIdentity();
+	local90 = p_matrix;
+
+	vec2[1] += 20.0f;
+	vec4 = vec2;
+	vec4 -= vec1;
+	vec4.Unitize();
+
+	vec5[0] = vec5[2] = 0.0f;
+	vec5[1] = -1.0f;
+
+	vec3.EqualsCross(&vec4, &vec5);
+	vec3.Unitize();
+	vec4.EqualsCross(&vec5, &vec3);
+	vec6 = vec2;
+
+	local90 = m_unk0x1a8;
+	m_unk0x160 = local48;
+
+	vec1.Clear();
+	vec2.Clear();
+
+	m_unk0x1f0 = Timer()->GetTime();
+
+	m_unk0x1f4.BETA_1004a9f0(local48);
+	m_unk0x1f4.FUN_10004620(local90);
+	m_unk0x1f4.FUN_10004520();
 }
 
 // FUNCTION: LEGO1 0x10004640
diff --git a/LEGO1/lego/legoomni/src/build/legocarbuild.cpp b/LEGO1/lego/legoomni/src/build/legocarbuild.cpp
index e8ac3d7d..69d2e8a0 100644
--- a/LEGO1/lego/legoomni/src/build/legocarbuild.cpp
+++ b/LEGO1/lego/legoomni/src/build/legocarbuild.cpp
@@ -358,7 +358,7 @@ void LegoCarBuild::VTable0x70()
 
 	m_unk0x2a0 = sqrt((MxDouble) DISTSQRD2(m_unk0x290, m_unk0x298));
 
-	m_unk0x25c.Unknown1(m_unk0x178, m_unk0x208);
+	m_unk0x25c.BETA_1004a9b0(m_unk0x178, m_unk0x208);
 }
 
 // FUNCTION: LEGO1 0x10023130
@@ -406,7 +406,7 @@ void LegoCarBuild::FUN_10023130(MxLong p_x, MxLong p_y)
 
 			MxFloat local1c = sqrt((double) (NORMSQRD2(local20))) / m_unk0x2a0;
 
-			m_unk0x25c.Unknown6(local78, local1c);
+			m_unk0x25c.BETA_1004aaa0(local78, local1c);
 
 			local78[3][0] = m_unk0x178[3][0] + local18[0];
 			local78[3][1] = m_unk0x178[3][1] + local18[1];
diff --git a/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp b/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp
index 4b74fdf1..ec73ba08 100644
--- a/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp
+++ b/LEGO1/lego/legoomni/src/common/legoanimationmanager.cpp
@@ -2793,8 +2793,8 @@ void LegoAnimationManager::FUN_100648f0(LegoTranInfo* p_tranInfo, MxLong p_unk0x
 		LegoLocation* location = NavController()->GetLocation(p_tranInfo->m_location);
 		if (location != NULL) {
 			CalcLocalTransform(location->m_position, location->m_direction, location->m_up, m_unk0x484);
-			m_unk0x4cc.Unknown1(m_unk0x43c, m_unk0x484);
-			m_unk0x4cc.Unknown7();
+			m_unk0x4cc.BETA_1004a9b0(m_unk0x43c, m_unk0x484);
+			m_unk0x4cc.FUN_10004520();
 		}
 		else {
 			p_tranInfo->m_flags &= ~LegoTranInfo::c_bit1;
@@ -2828,7 +2828,7 @@ void LegoAnimationManager::FUN_10064b50(MxLong p_time)
 			sub[1] = (m_unk0x484[3][1] - m_unk0x43c[3][1]) * und;
 			sub[2] = (m_unk0x484[3][2] - m_unk0x43c[3][2]) * und;
 
-			m_unk0x4cc.Unknown6(mat, (float) (p_time - m_unk0x434) / 1000.0f);
+			m_unk0x4cc.BETA_1004aaa0(mat, (float) (p_time - m_unk0x434) / 1000.0f);
 
 			VPV3(mat[3], m_unk0x43c[3], sub);
 			mat[3][3] = 1.0f;
diff --git a/LEGO1/lego/legoomni/src/entity/legocameracontroller.cpp b/LEGO1/lego/legoomni/src/entity/legocameracontroller.cpp
index 71c4114b..bde810e0 100644
--- a/LEGO1/lego/legoomni/src/entity/legocameracontroller.cpp
+++ b/LEGO1/lego/legoomni/src/entity/legocameracontroller.cpp
@@ -140,6 +140,20 @@ void LegoCameraController::FUN_10012320(float p_angle)
 	m_matrix1.RotateY(p_angle);
 }
 
+// FUNCTION: LEGO1 0x100123b0
+MxResult LegoCameraController::FUN_100123b0(Matrix4& p_matrix)
+{
+	if (m_lego3DView) {
+		ViewROI* pov = m_lego3DView->GetPointOfView();
+		if (pov) {
+			p_matrix = pov->GetLocal2World();
+			return SUCCESS;
+		}
+	}
+
+	return FAILURE;
+}
+
 // FUNCTION: LEGO1 0x100123e0
 // FUNCTION: BETA10 0x10068cb2
 void LegoCameraController::FUN_100123e0(const Matrix4& p_transform, MxU32 p_und)
diff --git a/LEGO1/lego/sources/anim/legoanim.cpp b/LEGO1/lego/sources/anim/legoanim.cpp
index 0328738b..4ee2dc69 100644
--- a/LEGO1/lego/sources/anim/legoanim.cpp
+++ b/LEGO1/lego/sources/anim/legoanim.cpp
@@ -878,9 +878,9 @@ inline void LegoAnimNodeData::GetTranslation(
 				c[3] = p_rotationKeys[i + 1].GetAngle();
 			}
 
-			b.Unknown4(a);
-			b.Unknown5(c);
-			b.Unknown6(
+			b.BETA_10180b80(a);
+			b.BETA_10180bc0(c);
+			b.BETA_1004aaa0(
 				p_matrix,
 				(p_time - p_rotationKeys[i].GetTime()) / (p_rotationKeys[i + 1].GetTime() - p_rotationKeys[i].GetTime())
 			);
diff --git a/LEGO1/mxgeometry/mxgeometry3d.h b/LEGO1/mxgeometry/mxgeometry3d.h
index 99a44fd3..15fd1ab0 100644
--- a/LEGO1/mxgeometry/mxgeometry3d.h
+++ b/LEGO1/mxgeometry/mxgeometry3d.h
@@ -105,35 +105,36 @@ class UnknownMx4DPointFloat {
 	UnknownMx4DPointFloat() : m_unk0x30(0) {}
 
 	// FUNCTION: BETA10 0x1004a9b0
-	void Unknown1(Matrix4& p_m1, Matrix4& p_m2)
+	void BETA_1004a9b0(Matrix4& p_m1, Matrix4& p_m2)
 	{
-		Unknown2(p_m1);
-		Unknown3(p_m2);
+		BETA_1004a9f0(p_m1);
+		FUN_10004620(p_m2);
 	}
 
 	// FUNCTION: BETA10 0x1004a9f0
-	void Unknown2(Matrix4& p_m)
+	void BETA_1004a9f0(Matrix4& p_m)
 	{
 		p_m.ToQuaternion(m_unk0x00);
 		m_unk0x30 |= c_bit1;
 	}
 
+	// FUNCTION: LEGO1 0x10004620
 	// FUNCTION: BETA10 0x1004aa30
-	void Unknown3(Matrix4& p_m)
+	void FUN_10004620(Matrix4& p_m)
 	{
 		p_m.ToQuaternion(m_unk0x18);
 		m_unk0x30 |= c_bit2;
 	}
 
 	// FUNCTION: BETA10 0x10180b80
-	void Unknown4(Vector4& p_v)
+	void BETA_10180b80(Vector4& p_v)
 	{
 		m_unk0x00 = p_v;
 		m_unk0x30 |= c_bit1;
 	}
 
 	// FUNCTION: BETA10 0x10180bc0
-	void Unknown5(Vector4& p_v)
+	void BETA_10180bc0(Vector4& p_v)
 	{
 		m_unk0x18 = p_v;
 		m_unk0x30 |= c_bit2;
@@ -143,8 +144,8 @@ class UnknownMx4DPointFloat {
 	const Vector4& GetUnknown0x18() const { return m_unk0x18; }
 	undefined4 GetUnknown0x30() const { return m_unk0x30; }
 
-	inline int Unknown6(Matrix4& p_matrix, float p_f);
-	inline void Unknown7();
+	inline int BETA_1004aaa0(Matrix4& p_matrix, float p_f);
+	inline long FUN_10004520();
 
 private:
 	inline int FUN_100040a0(Vector4& p_v, float p_f);
@@ -155,7 +156,7 @@ class UnknownMx4DPointFloat {
 };
 
 // FUNCTION: BETA10 0x1004aaa0
-int UnknownMx4DPointFloat::Unknown6(Matrix4& p_matrix, float p_f)
+int UnknownMx4DPointFloat::BETA_1004aaa0(Matrix4& p_matrix, float p_f)
 {
 	float data[4];
 	Vector4 v(data);
@@ -168,22 +169,27 @@ int UnknownMx4DPointFloat::Unknown6(Matrix4& p_matrix, float p_f)
 	}
 }
 
-inline void UnknownMx4DPointFloat::Unknown7()
+// FUNCTION: LEGO1 0x10004520
+inline long UnknownMx4DPointFloat::FUN_10004520()
 {
-	if (m_unk0x30) {
-		Mx4DPointFloat v1;
-		Mx4DPointFloat v2;
-
-		v1 = m_unk0x00;
-		v1 += m_unk0x18;
-
-		v2 = m_unk0x00;
-		v2 -= m_unk0x18;
-
-		if (v1.Dot(&v1, &v1) < v2.Dot(&v2, &v2)) {
-			m_unk0x18 *= -1.0f;
-		}
+	if (!m_unk0x30) {
+		return -1;
 	}
+
+	Mx4DPointFloat v1;
+	Mx4DPointFloat v2;
+
+	v1 = m_unk0x00;
+	v1 += m_unk0x18;
+
+	v2 = m_unk0x00;
+	v2 -= m_unk0x18;
+
+	if (v1.Dot(&v1, &v1) < v2.Dot(&v2, &v2)) {
+		m_unk0x18 *= -1.0f;
+	}
+
+	return 0;
 }
 
 // FUNCTION: LEGO1 0x100040a0
diff --git a/reccmp-project.yml b/reccmp-project.yml
index d2aaf9ba..c614cded 100644
--- a/reccmp-project.yml
+++ b/reccmp-project.yml
@@ -31,5 +31,6 @@ targets:
         - LegoWorld
       ignore-functions:
         # strcpy, strlen, ... (arguments are imported incorrectly)
+        - 0x100f8ad0
         - 0x100fa200
         - 0x100f9780