Index: Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismResultView.cs
===================================================================
diff -u -r5785cc13c0454eaabed7ede4dad8e885db7efd50 -rd6f110ecb32392f3ff1983a5e3e2b1f4603ae917
--- Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismResultView.cs	(.../MacroStabilityInwardsFailureMechanismResultView.cs)	(revision 5785cc13c0454eaabed7ede4dad8e885db7efd50)
+++ Ringtoets/MacroStabilityInwards/src/Ringtoets.MacroStabilityInwards.Forms/Views/MacroStabilityInwardsFailureMechanismResultView.cs	(.../MacroStabilityInwardsFailureMechanismResultView.cs)	(revision d6f110ecb32392f3ff1983a5e3e2b1f4603ae917)
@@ -45,7 +45,6 @@
         private readonly RecursiveObserver<CalculationGroup, ICalculationInput> calculationInputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationOutput> calculationOutputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationBase> calculationGroupObserver;
-        private readonly Observer failureMechanismObserver;
         private readonly IAssessmentSection assessmentSection;
 
         /// <inheritdoc />
@@ -64,11 +63,6 @@
                 throw new ArgumentNullException(nameof(assessmentSection));
             }
 
-            failureMechanismObserver = new Observer(UpdateDataGridViewDataSource)
-            {
-                Observable = failureMechanism
-            };
-
             this.assessmentSection = assessmentSection;
 
             // The concat is needed to observe the input of calculations in child groups.
@@ -101,7 +95,6 @@
             calculationInputObserver.Dispose();
             calculationOutputObserver.Dispose();
             calculationGroupObserver.Dispose();
-            failureMechanismObserver.Dispose();
 
             base.Dispose(disposing);
         }
Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsFailureMechanismResultViewTest.cs
===================================================================
diff -u -r44420c717ac32101ba0da4739d259c622f47976e -rd6f110ecb32392f3ff1983a5e3e2b1f4603ae917
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsFailureMechanismResultViewTest.cs	(.../MacroStabilityInwardsFailureMechanismResultViewTest.cs)	(revision 44420c717ac32101ba0da4739d259c622f47976e)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Forms.Test/Views/MacroStabilityInwardsFailureMechanismResultViewTest.cs	(.../MacroStabilityInwardsFailureMechanismResultViewTest.cs)	(revision d6f110ecb32392f3ff1983a5e3e2b1f4603ae917)
@@ -480,46 +480,6 @@
             }
         }
 
-        [Test]
-        public void GivenFailureMechanismResultView_WhenFailureMechanismNotifiesObserver_ThenViewUpdated()
-        {
-            // Given
-            MacroStabilityInwardsFailureMechanism failureMechanism = CreateFullyConfiguredFailureMechanism();
-            MacroStabilityInwardsCalculationScenario calculationScenario1 = MacroStabilityInwardsCalculationScenarioTestFactory.CreateMacroStabilityInwardsCalculationScenario(
-                0.1,
-                failureMechanism.Sections.First());
-            calculationScenario1.Contribution = (RoundedDouble) 0.6;
-            MacroStabilityInwardsCalculationScenario calculationScenario2 = MacroStabilityInwardsCalculationScenarioTestFactory.CreateMacroStabilityInwardsCalculationScenario(
-                0.2,
-                failureMechanism.Sections.First());
-            calculationScenario2.Contribution = (RoundedDouble) 0.4;
-            failureMechanism.CalculationsGroup.Children.Add(calculationScenario1);
-            failureMechanism.CalculationsGroup.Children.Add(calculationScenario2);
-
-            using (ShowFailureMechanismResultsView(failureMechanism, failureMechanism.SectionResults))
-            {
-                var gridTester = new ControlTester("dataGridView");
-                var dataGridView = (DataGridView) gridTester.TheObject;
-
-                MacroStabilityInwardsFailureMechanismSectionResultRow[] sectionResultRows = dataGridView.Rows.Cast<DataGridViewRow>()
-                                                                                                        .Select(r => r.DataBoundItem)
-                                                                                                        .Cast<MacroStabilityInwardsFailureMechanismSectionResultRow>()
-                                                                                                        .ToArray();
-
-                // When
-                failureMechanism.MacroStabilityInwardsProbabilityAssessmentInput.A = 0.01;
-                failureMechanism.NotifyObservers();
-
-                // Then
-                MacroStabilityInwardsFailureMechanismSectionResultRow[] updatedRows = dataGridView.Rows.Cast<DataGridViewRow>()
-                                                                                                  .Select(r => r.DataBoundItem)
-                                                                                                  .Cast<MacroStabilityInwardsFailureMechanismSectionResultRow>()
-                                                                                                  .ToArray();
-
-                CollectionAssert.AreNotEquivalent(sectionResultRows, updatedRows);
-            }
-        }
-
         private static MacroStabilityInwardsFailureMechanism CreateFullyConfiguredFailureMechanism()
         {
             var failureMechanism = new MacroStabilityInwardsFailureMechanism();
Index: Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismResultView.cs
===================================================================
diff -u -r884ba6ca60d8d9b50081e847a44e18c02b470138 -rd6f110ecb32392f3ff1983a5e3e2b1f4603ae917
--- Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismResultView.cs	(.../PipingFailureMechanismResultView.cs)	(revision 884ba6ca60d8d9b50081e847a44e18c02b470138)
+++ Ringtoets/Piping/src/Ringtoets.Piping.Forms/Views/PipingFailureMechanismResultView.cs	(.../PipingFailureMechanismResultView.cs)	(revision d6f110ecb32392f3ff1983a5e3e2b1f4603ae917)
@@ -52,7 +52,6 @@
         private readonly RecursiveObserver<CalculationGroup, ICalculationOutput> calculationOutputObserver;
         private readonly RecursiveObserver<CalculationGroup, ICalculationBase> calculationGroupObserver;
         private readonly IAssessmentSection assessmentSection;
-        private readonly Observer failureMechanismObserver;
 
         /// <inheritdoc />
         /// <summary>
@@ -71,11 +70,6 @@
 
             this.assessmentSection = assessmentSection;
 
-            failureMechanismObserver = new Observer(UpdateDataGridViewDataSource)
-            {
-                Observable = failureMechanism
-            };
-
             // The concat is needed to observe the input of calculations in child groups.
             calculationInputObserver = new RecursiveObserver<CalculationGroup, ICalculationInput>(
                 UpdateDataGridViewDataSource,
@@ -102,7 +96,6 @@
             calculationInputObserver.Dispose();
             calculationOutputObserver.Dispose();
             calculationGroupObserver.Dispose();
-            failureMechanismObserver.Dispose();
 
             base.Dispose(disposing);
         }
Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/Views/PipingFailureMechanismResultViewTest.cs
===================================================================
diff -u -r192447bfd98b506637875ed87ed50a805fc568e9 -rd6f110ecb32392f3ff1983a5e3e2b1f4603ae917
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/Views/PipingFailureMechanismResultViewTest.cs	(.../PipingFailureMechanismResultViewTest.cs)	(revision 192447bfd98b506637875ed87ed50a805fc568e9)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/Views/PipingFailureMechanismResultViewTest.cs	(.../PipingFailureMechanismResultViewTest.cs)	(revision d6f110ecb32392f3ff1983a5e3e2b1f4603ae917)
@@ -20,22 +20,17 @@
 // All rights reserved.
 
 using System;
-using System.Collections.Generic;
-using System.Linq;
 using System.Windows.Forms;
 using Core.Common.Base;
-using Core.Common.Base.Geometry;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Rhino.Mocks;
 using Ringtoets.AssemblyTool.KernelWrapper.TestUtil.Calculators;
 using Ringtoets.Common.Data.AssessmentSection;
-using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Common.Forms.Views;
 using Ringtoets.Common.Primitives;
 using Ringtoets.Piping.Data;
-using Ringtoets.Piping.Data.TestUtil;
 using Ringtoets.Piping.Forms.Views;
 
 namespace Ringtoets.Piping.Forms.Test.Views
@@ -204,53 +199,6 @@
             }
         }
 
-        [Test]
-        public void GivenFailureMechanismResultView_WhenFailureMechanismNotifiesObserver_ThenViewUpdated()
-        {
-            // Given
-            var pipingFailureMechanism = new PipingFailureMechanism();
-            pipingFailureMechanism.AddSection(new FailureMechanismSection("Section 1", new List<Point2D>
-            {
-                new Point2D(0.0, 0.0),
-                new Point2D(5.0, 0.0)
-            }));
-
-            pipingFailureMechanism.AddSection(new FailureMechanismSection("Section 2", new List<Point2D>
-            {
-                new Point2D(5.0, 0.0),
-                new Point2D(10.0, 0.0)
-            }));
-            PipingCalculationScenario calculationScenario1 = PipingCalculationScenarioTestFactory.CreatePipingCalculationScenario(
-                pipingFailureMechanism.Sections.First());
-            PipingCalculationScenario calculationScenario2 = PipingCalculationScenarioTestFactory.CreatePipingCalculationScenario(
-                pipingFailureMechanism.Sections.First());
-            pipingFailureMechanism.CalculationsGroup.Children.Add(calculationScenario1);
-            pipingFailureMechanism.CalculationsGroup.Children.Add(calculationScenario2);
-
-            using (ShowFailureMechanismResultsView(pipingFailureMechanism, pipingFailureMechanism.SectionResults))
-            {
-                var gridTester = new ControlTester("dataGridView");
-                var dataGridView = (DataGridView) gridTester.TheObject;
-
-                PipingFailureMechanismSectionResultRow[] sectionResultRows = dataGridView.Rows.Cast<DataGridViewRow>()
-                                                                                         .Select(r => r.DataBoundItem)
-                                                                                         .Cast<PipingFailureMechanismSectionResultRow>()
-                                                                                         .ToArray();
-
-                // When
-                pipingFailureMechanism.PipingProbabilityAssessmentInput.A = 0.01;
-                pipingFailureMechanism.NotifyObservers();
-
-                // Then
-                PipingFailureMechanismSectionResultRow[] updatedRows = dataGridView.Rows.Cast<DataGridViewRow>()
-                                                                                   .Select(r => r.DataBoundItem)
-                                                                                   .Cast<PipingFailureMechanismSectionResultRow>()
-                                                                                   .ToArray();
-
-                CollectionAssert.AreNotEquivalent(sectionResultRows, updatedRows);
-            }
-        }
-
         private PipingFailureMechanismResultView ShowFailureMechanismResultsView(IObservableEnumerable<PipingFailureMechanismSectionResult> sectionResults)
         {
             return ShowFailureMechanismResultsView(new PipingFailureMechanism(), sectionResults);