updated from reviewer feedback

src/FlightDisplay/PreFlightCheckList.qml

@@ -24,8 +24,6 @@ Rectangle {
     radius:     3
 
     property real _verticalMargin: ScreenTools.defaultFontPixelHeight / 2
-    property var    _offlineEditingVehicleType:     QGroundControl.settingsManager.appSettings.offlineEditingVehicleType
-
 
     Loader {
         id:     modelContainer
@@ -68,16 +66,20 @@ Rectangle {
 
     //-- Pick a checklist model that matches the current airframe type (if any)
     function _updateModel() {
-        if(activeVehicle) {
-            if(activeVehicle.multiRotor) {
+        var vehicle = activeVehicle
+        if (!vehicle) {
+           vehicle = QGroundControl.multiVehicleManager.offlineEditingVehicle
+        }
+
+        if(vehicle.multiRotor) {
             modelContainer.source = "/checklists/MultiRotorChecklist.qml"
-            } else if(activeVehicle.vtol) {
+        } else if(vehicle.vtol) {
             modelContainer.source = "/checklists/VTOLChecklist.qml"
-            } else if(activeVehicle.rover) {
+        } else if(vehicle.rover) {
             modelContainer.source = "/checklists/RoverChecklist.qml"
-            } else if(activeVehicle.sub) {
+        } else if(vehicle.sub) {
             modelContainer.source = "/checklists/SubChecklist.qml"
-            } else if(activeVehicle.fixedWing) {
+        } else if(vehicle.fixedWing) {
             modelContainer.source = "/checklists/FixedWingChecklist.qml"
         } else {
             modelContainer.source = "/checklists/DefaultChecklist.qml"
@@ -85,29 +87,6 @@ Rectangle {
         return
     }
 
-        // "enumStrings":      "Fixed Wing,Multi-Rotor,VTOL,Rover,Sub",
-        // "enumValues":       "1,2,20,10,12",
-        switch (_offlineEditingVehicleType.rawValue) {
-            case 1:
-                modelContainer.source = "/checklists/FixedWingChecklist.qml"
-                return
-            case 2:
-                modelContainer.source = "/checklists/MultiRotorChecklist.qml"
-                return
-            case 20:
-                modelContainer.source = "/checklists/VTOLChecklist.qml"
-                return
-            case 10:
-                modelContainer.source = "/checklists/RoverChecklist.qml"
-                return
-            case 12:
-                modelContainer.source = "/checklists/SubChecklist.qml"
-                return
-        }
-
-        modelContainer.source = "/checklists/DefaultChecklist.qml"
-    }
-
     Component.onCompleted: {
         _updateModel()
     }