feat(rmp): RMP navigation tuning

.github/CHANGELOG.md

@@ -16,6 +16,7 @@
 1. [HYD] Simple temperature simulation - @Crocket63 (crocket)
 1. [FLIGHTMODEL] Reduced flap induced drag - @donstim (donbikes#4084)
 1. [EFB] Fix and improve pushback system and add API documentation - @frankkopp (Frank Kopp)
+1. [RMP] RMPs navigation backup - Julian Sebline (Julian Sebline#8476 on Discord)
 
 ## 0.9.0
 

docs/a320-simvars.md

@@ -392,6 +392,10 @@
     - Number
     - The current mode of the right radio management panel.
 
+- A32NX_RMP_{L,R}_NAV_BUTTON_SELECTED
+    - Bool
+    - Whether the NAV push button on the corresponding RMP is pushed or not.
+
 - A32NX_RMP_L_VHF2_STANDBY
     - Hz
     - The VHF 2 standby frequency for the left RMP.
@@ -408,6 +412,42 @@
     - Hz
     - The VHF 3 standby frequency for the right RMP.
 
+- A32NX_RMP_{L,R}_SAVED_ACTIVE_FREQUENCY_VOR
+    - Hz
+    - The VOR active frequency that is saved for display for the left/right RMP.
+
+- A32NX_RMP_{L,R}_SAVED_ACTIVE_FREQUENCY_ILS
+    - Hz
+    - The ILS active frequency that is saved for display for the left/right RMP.
+
+- A32NX_RMP_{L,R}_SAVED_ACTIVE_FREQUENCY_ADF
+    - Hz
+    - The ADF active frequency that is saved for display for the left/right RMP.
+
+- A32NX_RMP_{L,R}_SAVED_STANDBY_FREQUENCY_VOR
+    - Hz
+    - The VOR standby frequency that is saved for display for the left/right RMP.
+
+- A32NX_RMP_{L,R}_SAVED_STANDBY_FREQUENCY_ILS
+    - Hz
+    - The ILS standby frequency that is saved for display for the left/right RMP.
+
+- A32NX_RMP_{L,R}_SAVED_STANDBY_FREQUENCY_ADF
+    - Hz
+    - The ADF standby frequency that is saved for display for the left/right RMP.
+
+- A32NX_RMP_{L,R}_SAVED_COURSE_VOR
+    - Number
+    - The VOR course tuned via the left/right RMP
+
+- A32NX_RMP_{L,R}_SAVED_COURSE_ILS
+    - Number
+    - The ILS course tuned via the left/right RMP
+
+- A32NX_RMP_ILS_TUNED
+    - Bool
+    - If the ILS is tuned via the RMP
+
 - A32NX_TO_CONFIG_FLAPS_ENTERED
     - Bool
     - True if the pilot has entered a FLAPS value in the PERF TAKE OFF takeoff
@@ -1047,6 +1087,15 @@
       GOAROUND | 6
       DONE | 7
 
+- A32NX_FMGC_RADIONAV_TUNING_MODE
+    - Enum
+    - Hold the FMGCs current tuning mode
+      Value | Meaning
+      --- | ---
+      0 | AUTO
+      1 | MANUAL
+      2 | REMOTE VIA RMPs
+
 - A32NX_FLAPS_HANDLE_INDEX
     - Number
     - Indicates the physical flaps handle position

flybywire-aircraft-a320-neo/en-US.locPak

@@ -14,6 +14,16 @@
       "COCKPIT.TOOLTIPS.LIGHTING_KNOB_L_PFD_INCREASE": "Increase left PFD brightness",
       "COCKPIT.TOOLTIPS.LIGHTING_KNOB_R_PFD_DECREASE": "Decrease right PFD brightness",
       "COCKPIT.TOOLTIPS.LIGHTING_KNOB_R_PFD_INCREASE": "Increase right PFD brightness",
+	  "COCKPIT.TOOLTIPS.NAV_PUSHBUTTON_VOICE_OFF": "Allow morse ident",
+	  "COCKPIT.TOOLTIPS.NAV_PUSHBUTTON_VOICE_ON": "Inhibit morse ident",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_VOLUME_INCREASE": "Increase the volume of the ident of the Markers beacons",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_VOLUME_DECREASE": "Decrease the volume of the ident of the Markers beacons",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_IDENT_ENABLE": "Turn on the ident of the Markers beacons",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_IDENT_DISABLE": "Turn off the ident of the Markers beacons",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_VOLUME_INCREASE": "Increase the volume of the ident of the ILS",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_VOLUME_DECREASE": "Decrease the volume of the ident of the ILS",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_IDENT_ENABLE": "Turn on the ident of the ILS",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_IDENT_DISABLE": "Turn off the ident of the ILS",
       "COCKPIT.TOOLTIPS.LIGHTS_NOSMOKE_AUTO": "Set \"no smoke\" prompt light to AUTO",
       "COCKPIT.TOOLTIPS.APU_AVAILABLE": "APU available",
       "A32NX.LOADING.TIPS.A320NEO_001": "The FlyByWire A32NX is a collaboration between hundreds of individual contributors.",

flybywire-aircraft-a320-neo/fr-FR.locPak

@@ -15,6 +15,16 @@
       "COCKPIT.TOOLTIPS.LIGHTING_KNOB_L_PFD_INCREASE": "Augmenter la luminosité du PFD gauche",
       "COCKPIT.TOOLTIPS.LIGHTING_KNOB_R_PFD_DECREASE": "Réduire la luminosité du PDF droit",
       "COCKPIT.TOOLTIPS.LIGHTING_KNOB_R_PFD_INCREASE": "Augmenter la luminosité du PDF droit",
+      "COCKPIT.TOOLTIPS.NAV_PUSHBUTTON_VOICE_OFF": "Autoriser l'identification morse",
+      "COCKPIT.TOOLTIPS.NAV_PUSHBUTTON_VOICE_ON": "Inhiber l'identification morse",
+      "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_VOLUME_INCREASE": "Augmenter le volume de l'identification des balises Markers",
+      "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_VOLUME_DECREASE": "Diminuer le volume de l'identification des balises Marker",
+      "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_IDENT_ENABLE": "Activer l'identification des balises Markers",
+      "COCKPIT.TOOLTIPS.NAV_KNOB_MARKERS_IDENT_DISABLE": "Désactiver l'identification des balises Markers",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_VOLUME_INCREASE": "Augmenter le volume de l'identification de l'ILS",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_VOLUME_DECREASE": "Diminuer le volume de l'identification de l'ILS",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_IDENT_ENABLE": "Activer l'identification de l'ILS",
+	  "COCKPIT.TOOLTIPS.NAV_KNOB_ILS_IDENT_DISABLE": "Désactiver l'identification de l'ILS",
       "COCKPIT.TOOLTIPS.LIGHTS_NOSMOKE_AUTO": "Mettre le témoin d'interdiction de fumer en mode AUTO",
       "A32NX.LOADING.TIPS.A320NEO_001": "Le FlyByWire A32NX est le fruit d'une collaboration entre des centaines de contributeurs individuels.",
       "A32NX.LOADING.TIPS.A320NEO_002": "Le saviez-vous ? L'A320 peut atterrir par vent de travers jusqu'à 38 nœuds et avec un vent arrière jusqu'à 15 nœuds !",

flybywire-aircraft-a320-neo/html_ui/Pages/VCockpit/Instruments/Airliners/FlyByWire_A320_Neo/CDU/A320_Neo_CDU_NavRadioPage.js

@@ -9,11 +9,12 @@ class CDUNavRadioPage {
         mcdu.returnPageCallback = () => {
             CDUNavRadioPage.ShowPage(mcdu);
         };
+
         const radioOn = mcdu.isRadioNavActive();
         let vor1FrequencyCell = "";
         let vor1CourseCell = "";
         let ilsFrequencyCell = "";
-        let ilsCourseCell = "[  ]";
+        let ilsCourseCell = "";
         let adf1FrequencyCell = "";
         let adf1BfoOption = "";
         let vor2FrequencyCell = "";
@@ -29,15 +30,24 @@ class CDUNavRadioPage {
         }, mcdu.PageTimeout.Default);
 
         if (!radioOn) {
-            vor1FrequencyCell = "[\xa0]/[\xa0\xa0.\xa0]";
-            const vor1Beacon = mcdu.radioNav.getVORBeacon(1);
-            const vor1Ident = vor1Beacon && vor1Beacon.ident.length >= 2 && vor1Beacon.ident.length <= 3 ? vor1Beacon.ident : "";
-            if (mcdu.vor1Frequency && !mcdu.vor1IdIsPilotEntered && mcdu.vor1FreqIsPilotEntered) {
-                vor1FrequencyCell = "{small}" + vor1Ident.padStart(3, "\xa0") + "{end}" + "/" + mcdu.vor1Frequency.toFixed(2);
-            } else if (mcdu.vor1Frequency && mcdu.vor1IdIsPilotEntered && !mcdu.vor1FreqIsPilotEntered) {
-                vor1FrequencyCell = mcdu.vor1IdPilotValue.padStart(3, "\xa0") + "/" + "{small}" + mcdu.vor1Frequency.toFixed(2) + "{end}";
+            if (!mcdu.backupNavTuning) {
+                vor1FrequencyCell = "[\xa0]/[\xa0\xa0.\xa0]";
+                const vor1Beacon = mcdu.radioNav.getVORBeacon(1);
+                const vor1Ident = vor1Beacon && vor1Beacon.ident.length >= 2 && vor1Beacon.ident.length <= 3 ? vor1Beacon.ident : "";
+                if (mcdu.vor1Frequency && !mcdu.vor1IdIsPilotEntered && mcdu.vor1FreqIsPilotEntered) {
+                    vor1FrequencyCell = "{small}" + vor1Ident.padStart(3, "\xa0") + "{end}" + "/" + mcdu.vor1Frequency.toFixed(2);
+                } else if (mcdu.vor1Frequency && mcdu.vor1IdIsPilotEntered && !mcdu.vor1FreqIsPilotEntered) {
+                    vor1FrequencyCell = mcdu.vor1IdPilotValue.padStart(3, "\xa0") + "/" + "{small}" + mcdu.vor1Frequency.toFixed(2) + "{end}";
+                }
             }
+
             mcdu.onLeftInput[0] = (value, scratchpadCallback) => {
+                if (mcdu.backupNavTuning) {
+                    mcdu.setScratchpadMessage(NXSystemMessages.notAllowed);
+                    scratchpadCallback();
+                    return false;
+                }
+
                 const numValue = parseFloat(value);
                 if (value === FMCMainDisplay.clrValue) {
                     mcdu.vor1FreqIsPilotEntered = false;
@@ -97,11 +107,19 @@ class CDUNavRadioPage {
                     scratchpadCallback();
                 }
             };
-            vor1CourseCell = "[\xa0]";
-            if (mcdu.vor1Course > 0) {
-                vor1CourseCell = mcdu.vor1Course.toFixed(0).padStart(3, "0");
+            if (!mcdu.backupNavTuning) {
+                vor1CourseCell = "[\xa0]";
+                if (mcdu.vor1Course > 0) {
+                    vor1CourseCell = mcdu.vor1Course.toFixed(0).padStart(3, "0");
+                }
             }
             mcdu.onLeftInput[1] = (value, scratchpadCallback) => {
+                if (mcdu.backupNavTuning) {
+                    mcdu.setScratchpadMessage(NXSystemMessages.notAllowed);
+                    scratchpadCallback();
+                    return false;
+                }
+
                 const numValue = parseFloat(value);
                 if (isFinite(numValue) && numValue > 0 && numValue <= 360) {
                     SimVar.SetSimVarValue("K:VOR1_SET", "number", numValue).then(() => {
@@ -118,26 +136,31 @@ class CDUNavRadioPage {
                     scratchpadCallback();
                 }
             };
-            ilsFrequencyCell = "[\xa0\xa0]/[\xa0\xa0.\xa0]";
-            if (mcdu.ilsFrequency != 0) {
-                if (mcdu._ilsFrequencyPilotEntered) {
-                    const ilsIdent = mcdu.radioNav.getILSBeacon(1);
-                    ilsFrequencyCell = `{small}${ilsIdent.ident.trim().padStart(4, "\xa0")}{end}/${mcdu.ilsFrequency.toFixed(2)}`;
-                } else if (mcdu._ilsIdentPilotEntered) {
-                    ilsFrequencyCell = `${mcdu._ilsIdent.trim().padStart(4, "\xa0")}/{small}${mcdu.ilsFrequency.toFixed(2)}{end}`;
-                } else if (mcdu.ilsAutoTuned) {
-                    ilsFrequencyCell = `{small}${mcdu.ilsAutoIdent.padStart(4, "\xa0")}/${mcdu.ilsFrequency.toFixed(2)}{end}`;
-                }
 
-                const lsCourse = SimVar.GetSimVarValue('L:A32NX_FM_LS_COURSE', 'number');
-                if (lsCourse >= 0) {
-                    ilsCourseCell = `{${mcdu.ilsCourse !== undefined ? 'big' : 'small'}}F${lsCourse.toFixed(0).padStart(3, "0")}{end}`;
-                } else if (mcdu._ilsFrequencyPilotEntered) {
-                    ilsCourseCell = "{amber}____{end}";
+            if (!mcdu.backupNavTuning) {
+                ilsFrequencyCell = "[\xa0\xa0]/[\xa0\xa0.\xa0]";
+                if (mcdu.ilsFrequency != 0) {
+                    if (mcdu._ilsFrequencyPilotEntered) {
+                        const ilsIdent = mcdu.radioNav.getILSBeacon(1);
+                        ilsFrequencyCell = `{small}${ilsIdent.ident.trim().padStart(4, "\xa0")}{end}/${mcdu.ilsFrequency.toFixed(2)}`;
+                    } else if (mcdu._ilsIdentPilotEntered) {
+                        ilsFrequencyCell = `${mcdu._ilsIdent.trim().padStart(4, "\xa0")}/{small}${mcdu.ilsFrequency.toFixed(2)}{end}`;
+                    } else if (mcdu.ilsAutoTuned) {
+                        ilsFrequencyCell = `{small}${mcdu.ilsAutoIdent.padStart(4, "\xa0")}/${mcdu.ilsFrequency.toFixed(2)}{end}`;
+                    }
+
+                    const lsCourse = SimVar.GetSimVarValue('L:A32NX_FM_LS_COURSE', 'number');
+                    ilsCourseCell = "[\xa0]";
+                    if (lsCourse >= 0) {
+                        ilsCourseCell = `{${mcdu.ilsCourse !== undefined ? 'big' : 'small'}}F${lsCourse.toFixed(0).padStart(3, "0")}{end}`;
+                    } else if (mcdu._ilsFrequencyPilotEntered) {
+                        ilsCourseCell = "{amber}____{end}";
+                    }
                 }
             }
+
             mcdu.onLeftInput[2] = (value, scratchpadCallback) => {
-                mcdu.setIlsFrequency(value, (result) => {
+                mcdu.setIlsFrequency(value, mcdu.backupNavTuning, (result) => {
                     if (result) {
                         mcdu.requestCall(() => {
                             CDUNavRadioPage.ShowPage(mcdu);
@@ -148,7 +171,7 @@ class CDUNavRadioPage {
                 });
             };
             mcdu.onLeftInput[3] = (value, scratchpadCallback) => {
-                mcdu.setLsCourse(value, (result) => {
+                mcdu.setLsCourse(value, mcdu.backupNavTuning, (result) => {
                     if (result) {
                         mcdu.requestCall(() => {
                             CDUNavRadioPage.ShowPage(mcdu);
@@ -158,16 +181,25 @@ class CDUNavRadioPage {
                     }
                 });
             };
-            adf1FrequencyCell = "[\xa0]/[\xa0\xa0\xa0.]";
-            const adf1Ident = SimVar.GetSimVarValue(`ADF IDENT:1`, "string");
-            if (mcdu.adf1Frequency != 0 && !mcdu.adf1IdIsPilotEntered && mcdu.adf1FreqIsPilotEntered) {
-                adf1FrequencyCell = "{small}" + adf1Ident.padStart(3, "\xa0") + "{end}" + "/" + mcdu.adf1Frequency.toFixed(1);
-                adf1BfoOption = "<ADF1 BFO";
-            } else if (mcdu.adf1Frequency != 0 && mcdu.adf1IdIsPilotEntered && !mcdu.adf1FreqIsPilotEntered) {
-                adf1FrequencyCell = mcdu.adf1IdPilotValue.padStart(3, "\xa0") + "/" + "{small}" + mcdu.adf1Frequency.toFixed(1) + "{end}";
-                adf1BfoOption = "<ADF1 BFO";
+
+            if (!mcdu.backupNavTuning) {
+                adf1FrequencyCell = "[\xa0]/[\xa0\xa0\xa0.]";
+                const adf1Ident = SimVar.GetSimVarValue(`ADF IDENT:1`, "string");
+                if (mcdu.adf1Frequency != 0 && !mcdu.adf1IdIsPilotEntered && mcdu.adf1FreqIsPilotEntered) {
+                    adf1FrequencyCell = "{small}" + adf1Ident.padStart(3, "\xa0") + "{end}" + "/" + mcdu.adf1Frequency.toFixed(1);
+                    adf1BfoOption = "<ADF1 BFO";
+                } else if (mcdu.adf1Frequency != 0 && mcdu.adf1IdIsPilotEntered && !mcdu.adf1FreqIsPilotEntered) {
+                    adf1FrequencyCell = mcdu.adf1IdPilotValue.padStart(3, "\xa0") + "/" + "{small}" + mcdu.adf1Frequency.toFixed(1) + "{end}";
+                    adf1BfoOption = "<ADF1 BFO";
+                }
             }
             mcdu.onLeftInput[4] = (value, scratchpadCallback) => {
+                if (mcdu.backupNavTuning) {
+                    mcdu.setScratchpadMessage(NXSystemMessages.notAllowed);
+                    scratchpadCallback();
+                    return false;
+                }
+
                 const numValue = parseFloat(value);
                 if (!isFinite(numValue) && value.length >= 2 && value.length <= 3) {
                     mcdu.getOrSelectNDBsByIdent(value, (navaids) => {
@@ -218,15 +250,24 @@ class CDUNavRadioPage {
         }
 
         if (!radioOn) {
-            vor2FrequencyCell = "[\xa0\xa0.\xa0]/[\xa0]";
-            const vor2Beacon = mcdu.radioNav.getVORBeacon(2);
-            const vor2Ident = vor2Beacon && vor2Beacon.ident.length >= 2 && vor2Beacon.ident.length <= 3 ? vor2Beacon.ident : "";
-            if (mcdu.vor2Frequency != 0 && mcdu.vor2FreqIsPilotEntered && !mcdu.vor2IdIsPilotEntered) {
-                vor2FrequencyCell = mcdu.vor2Frequency.toFixed(2) + "/" + "{small}" + vor2Ident.padEnd(3, "\xa0") + "{end}";
-            } else if (mcdu.vor2Frequency != 0 && !mcdu.vor2FreqIsPilotEntered && mcdu.vor2IdIsPilotEntered) {
-                vor2FrequencyCell = "{small}" + mcdu.vor2Frequency.toFixed(2) + "{end}" + "/" + mcdu.vor2IdPilotValue.padEnd(3, "\xa0");
+            if (!mcdu.backupNavTuning) {
+                vor2FrequencyCell = "[\xa0\xa0.\xa0]/[\xa0]";
+                const vor2Beacon = mcdu.radioNav.getVORBeacon(2);
+                const vor2Ident = vor2Beacon && vor2Beacon.ident.length >= 2 && vor2Beacon.ident.length <= 3 ? vor2Beacon.ident : "";
+                if (mcdu.vor2Frequency != 0 && mcdu.vor2FreqIsPilotEntered && !mcdu.vor2IdIsPilotEntered) {
+                    vor2FrequencyCell = mcdu.vor2Frequency.toFixed(2) + "/" + "{small}" + vor2Ident.padEnd(3, "\xa0") + "{end}";
+                } else if (mcdu.vor2Frequency != 0 && !mcdu.vor2FreqIsPilotEntered && mcdu.vor2IdIsPilotEntered) {
+                    vor2FrequencyCell = "{small}" + mcdu.vor2Frequency.toFixed(2) + "{end}" + "/" + mcdu.vor2IdPilotValue.padEnd(3, "\xa0");
+                }
             }
+
             mcdu.onRightInput[0] = (value, scratchpadCallback) => {
+                if (mcdu.backupNavTuning) {
+                    mcdu.setScratchpadMessage(NXSystemMessages.notAllowed);
+                    scratchpadCallback();
+                    return false;
+                }
+
                 const numValue = parseFloat(value);
                 if (value === FMCMainDisplay.clrValue) {
                     mcdu.vor2FreqIsPilotEntered = false;
@@ -286,11 +327,20 @@ class CDUNavRadioPage {
                     scratchpadCallback();
                 }
             };
-            vor2CourseCell = "[\xa0]";
-            if (mcdu.vor2Course > 0) {
-                vor2CourseCell = mcdu.vor2Course.toFixed(0).padStart(3, "0");
+
+            if (!mcdu.backupNavTuning) {
+                vor2CourseCell = "[\xa0]";
+                if (mcdu.vor2Course > 0) {
+                    vor2CourseCell = mcdu.vor2Course.toFixed(0).padStart(3, "0");
+                }
             }
             mcdu.onRightInput[1] = (value, scratchpadCallback) => {
+                if (mcdu.backupNavTuning) {
+                    mcdu.setScratchpadMessage(NXSystemMessages.notAllowed);
+                    scratchpadCallback();
+                    return false;
+                }
+
                 const numValue = parseFloat(value);
                 if (isFinite(numValue) && numValue > 0 && numValue <= 360) {
                     SimVar.SetSimVarValue("K:VOR2_SET", "number", numValue).then(() => {
@@ -307,16 +357,25 @@ class CDUNavRadioPage {
                     scratchpadCallback();
                 }
             };
-            adf2FrequencyCell = "[\xa0\xa0\xa0.]/[\xa0]";
-            const adf2Ident = SimVar.GetSimVarValue(`ADF IDENT:2`, "string");
-            if (mcdu.adf2Frequency > 0 && mcdu.adf2FreqIsPilotEntered && !mcdu.adf2IdIsPilotEntered) {
-                adf2FrequencyCell = mcdu.adf2Frequency.toFixed(1) + "/" + "{small}" + adf2Ident.padEnd(3, "\xa0") + "{end}";
-                adf2BfoOption = "ADF2 BFO>";
-            } else if (mcdu.adf2Frequency > 0 && !mcdu.adf2FreqIsPilotEntered && mcdu.adf2IdIsPilotEntered) {
-                adf2FrequencyCell = "{small}" + mcdu.adf2Frequency.toFixed(1) + "{end}" + "/" + mcdu.adf2IdPilotValue.padEnd(3, "\xa0");
-                adf2BfoOption = "ADF2 BFO>";
+
+            if (!mcdu.backupNavTuning) {
+                adf2FrequencyCell = "[\xa0\xa0\xa0.]/[\xa0]";
+                const adf2Ident = SimVar.GetSimVarValue(`ADF IDENT:2`, "string");
+                if (mcdu.adf2Frequency > 0 && mcdu.adf2FreqIsPilotEntered && !mcdu.adf2IdIsPilotEntered) {
+                    adf2FrequencyCell = mcdu.adf2Frequency.toFixed(1) + "/" + "{small}" + adf2Ident.padEnd(3, "\xa0") + "{end}";
+                    adf2BfoOption = "ADF2 BFO>";
+                } else if (mcdu.adf2Frequency > 0 && !mcdu.adf2FreqIsPilotEntered && mcdu.adf2IdIsPilotEntered) {
+                    adf2FrequencyCell = "{small}" + mcdu.adf2Frequency.toFixed(1) + "{end}" + "/" + mcdu.adf2IdPilotValue.padEnd(3, "\xa0");
+                    adf2BfoOption = "ADF2 BFO>";
+                }
             }
             mcdu.onRightInput[4] = (value, scratchpadCallback) => {
+                if (mcdu.backupNavTuning) {
+                    mcdu.setScratchpadMessage(NXSystemMessages.notAllowed);
+                    scratchpadCallback();
+                    return false;
+                }
+
                 const numValue = parseFloat(value);
                 if (!isFinite(numValue) && value.length >= 2 && value.length <= 3) {
                     mcdu.adf2FreqIsPilotEntered = false;