diff --git a/Aircraft/Instruments-3d/clock/M877/M877.nas b/Aircraft/Instruments-3d/clock/M877/M877.nas
index 42d989b21..da2a3f13e 100644
--- a/Aircraft/Instruments-3d/clock/M877/M877.nas
+++ b/Aircraft/Instruments-3d/clock/M877/M877.nas
@@ -1,58 +1,129 @@
-var m877 = {
+ var m877 = {
     new : func(prop1){
         m = { parents : [m877]};
         m.MODE =0;
+        m.digit_to_set=0;
+        m.digit=[];
+        m.set_mode=0;
+        m.et_start_time=0;
+        m.et_countdown=0;
+        m.et_running=0;
+        m.et_elapsed=0;
+        m.ft_start_time=0;
         m.modetext =["GMT","LT","FT","ET"];
-        m.M877 = props.globals.getNode(prop1,1);
-        m.set_hour=m.M877.getNode("set-hour",1);
-        m.set_hour.setBoolValue(0);
-        m.set_min=m.M877.getNode("set-min",1);
-        m.set_min.setBoolValue(0);
-        m.mode=m.M877.getNode("mode",1);
-        m.mode.setIntValue(m.MODE);
-        m.tenths=m.M877.getNode("display-tenths",1);
-        m.tenths.setBoolValue(0);
-        m.modestring=m.M877.getNode("mode-string",1);
-        m.modestring.setValue(m.modetext[m.MODE]);
-        m.HR=m.M877.getNode("indicated-hour",1);
-        m.HR.setIntValue(0);
-        m.MN=m.M877.getNode("indicated-min",1);
-        m.MN.setIntValue(0);
-        m.ET_HR=m.M877.getNode("ET-hr",1);
-        m.ET_HR.setIntValue(0);
-        m.ET_MN=m.M877.getNode("ET-min",1);
-        m.ET_MN.setIntValue(0);
-        m.ET_string=m.M877.getNode("ET-string",1);
-        m.ET_string.setValue("00:00");
+        m.M877 = props.globals.initNode(prop1);
+        m.tenths=m.M877.initNode("tenths",0,"BOOL");
+        m.ET_alarm=m.M877.initNode("et-alarm",0,"BOOL");
+        m.FT_alarm=m.M877.initNode("ft-alert",0,"BOOL");
+        m.FT_alarm_time=m.M877.initNode("ft-alarm-time",0,"BOOL");
+        append(m.digit,m.M877.initNode("digit[0]",1,"BOOL"));
+        append(m.digit,m.M877.initNode("digit[1]",1,"BOOL"));
+        append(m.digit,m.M877.initNode("digit[2]",1,"BOOL"));
+        append(m.digit,m.M877.initNode("digit[3]",1,"BOOL"));
+        m.modestring=m.M877.initNode("mode-string",m.modetext[m.MODE],"STRING");
+        m.power=m.M877.initNode("power",1,"BOOL");
+        m.HR=m.M877.initNode("indicated-hour",0,"INT");
+        m.MN=m.M877.initNode("indicated-min",0,"INT");
+        m.ET_HR=m.M877.initNode("ET-hr",0,"INT");
+        m.ET_MN=m.M877.initNode("ET-min",0,"INT");
+        m.FT_HR=m.M877.initNode("FT-hr",0,"INT");
+        m.FT_MN=m.M877.initNode("FT-min",0,"INT");
         return m;
     },
-#### next mode  ####
-    set_clock : func(){
-        var cmode = me.mode.getValue();
-        cmode +=1;
-        if(cmode>3)cmode -=4;
-        me.mode.setValue(cmode);
+#### displayed mode  ####
+    select_display : func(){
+        if(me.set_mode==0){
+            me.MODE +=1;
+            if(me.MODE>3)me.MODE -=4;
+            me.modestring.setValue(me.modetext[me.MODE]);
+        }else{
+            me.digit[me.digit_to_set].setValue(1);
+            me.digit_to_set+=1;
+            if(me.digit_to_set>3){
+                me.digit_to_set=0;
+                me.set_mode=0;
+            }
+        }
     },
+#### set displayed mode  ####
+    set_time : func(){
+        me.set_mode=1-me.set_mode;
+    },
+#### CTL button action ####
+    control_action : func(){
+        if(me.set_mode==0){
+            if(me.MODE==3){
+                if(me.et_running==0){
+                me.et_start_time=getprop("/sim/time/elapsed-sec");
+                    me.et_running=1;
+                }else{
+                    me.et_start_time=getprop("/sim/time/elapsed-sec");
+                    me.et_elapsed=0;
+                    me.et_running=0;
+                }
+            }
+        }else{
+            if(me.MODE==0){
+                me.set_gmt();
+            }elsif(meMODE==1){
+                me.set_lt();
+            }elsif(meMODE==2){
+                me.set_ft();
+            }elsif(meMODE==3){
+                me.set_et();
+            }
+        }
+    },
+
+#### set GMT  ####
+    set_gmt : func(){
+    
+    },
+
+#### set LT  ####
+    set_lt : func(){
+    
+    },
+
+#### set FT  ####
+    set_ft : func(){
+    
+    },
+
+#### set ET  ####
+    set_et : func(){
+    
+    },
+
 #### elapsed time  ####
     update_ET : func(){
-        var fmeter = getprop("/instrumentation/clock/m877/ET-sec");
-        var fhour = fmeter/3600;
-        var inthour =int(fhour);
-        me.ET_HR.setValue(inthour);
-        var fmin = (fhour - inthour);
-        if(me.tenths.getBoolValue()){
-            fmin *=100;
-        }else{
-            fmin *=60;
+        if(me.et_running!=0){
+        me.et_elapsed=getprop("/sim/time/elapsed-sec") - me.et_start_time;
+        }
+        var ethour = me.et_elapsed/3600;
+        var hr= int(ethour);
+        var etmin=(ethour-hr) * 60;
+        var min = int(etmin);
+        var etsec= (etmin- min) *60;
+        if(ethour <1){
+            me.ET_HR.setValue(min);
+            me.ET_MN.setValue(etsec);
+        }else{
+            me.ET_HR.setValue(hr);
+            me.ET_MN.setValue(min);
         }
-        me.ET_MN.setValue(fmin);
-        var str = sprintf("%02.0f:%02.0f",inthour,fmin);
-        me.ET_string.setValue(str);
     },
 #### update clock  ####
     update_clock : func{
+        var pwr=me.power.getValue();
+        if(me.set_mode==0){
+            pwr=1-pwr;
+        }else{
+            pwr=1;
+        }
+        me.power.setValue(pwr);
         me.update_ET();
-        var cm = me.mode.getValue();
+        var cm = me.MODE;
         if(cm ==0){
             me.HR.setValue(getprop("/instrumentation/clock/indicated-hour"));
             me.MN.setValue(getprop("/instrumentation/clock/indicated-min"));
@@ -72,30 +143,27 @@ var m877 = {
                 me.MN.setValue(me.ET_MN.getValue());
             }
         }
+        if(me.set_mode==1){
+            var flsh=me.digit[me.digit_to_set].getValue();
+            flsh=1-flsh;
+            me.digit[me.digit_to_set].setValue(flsh);
+        }else{
+            me.digit[me.digit_to_set].setValue(1);
+        }
     },
 };
-
+#####################################
 
 var davtron=m877.new("instrumentation/clock/m877");
 var ETmeter = aircraft.timer.new("/instrumentation/clock/m877/ET-sec", 10);
 
-##################################
 
 setlistener("/sim/signals/fdm-initialized", func {
-    ETmeter.reset();
     settimer(update,2);
     print("Chronometer ... Check");
 });
 
-setlistener("/gear/gear[1]/wow", func(gr){
-    if(gr.getBoolValue()){
-        ETmeter.stop();
-    }else{
-        ETmeter.start();
-    }
-},0,0);
-
 var update = func{
 davtron.update_clock();
-settimer(update,1);
+settimer(update,0.5);
 }
\ No newline at end of file
diff --git a/Aircraft/Instruments-3d/clock/M877/M877.png b/Aircraft/Instruments-3d/clock/M877/M877.png
index fadf01b15..7cd6673e1 100644
Binary files a/Aircraft/Instruments-3d/clock/M877/M877.png and b/Aircraft/Instruments-3d/clock/M877/M877.png differ
diff --git a/Aircraft/Instruments-3d/clock/M877/M877.rgb b/Aircraft/Instruments-3d/clock/M877/M877.rgb
deleted file mode 100644
index c8971b569..000000000
Binary files a/Aircraft/Instruments-3d/clock/M877/M877.rgb and /dev/null differ
diff --git a/Aircraft/Instruments-3d/clock/M877/m877.ac b/Aircraft/Instruments-3d/clock/M877/m877.ac
index 164e1d3f3..50d27c38e 100644
--- a/Aircraft/Instruments-3d/clock/M877/m877.ac
+++ b/Aircraft/Instruments-3d/clock/M877/m877.ac
@@ -4,16 +4,19 @@ MATERIAL "glow2" rgb 0.829458 0.829458 0.829458 amb 0.5 0.5 0.5 emis 0.6 0.6 0.6
 MATERIAL "glow" rgb 1 1 1 amb 0.5 0.5 0.5 emis 1 1 1 spec 0 0 0 shi 32 trans 0
 MATERIAL "glosswhite" rgb 0.8 0.8 0.8 amb 0 0 0 emis 0 0 0 spec 1 1 1 shi 64 trans 0
 OBJECT world
-kids 13
-OBJECT group
-name "CTL.btn"
-kids 2
+kids 15
 OBJECT poly
-name "CTL.btn_0"
-data 4
-Cube
+name "CTL.btn"
+data 8
+Cube.001
+texture "M877.png"
+texrep 1 1
 crease 30.000000
-numvert 8
+numvert 12
+0.004398 -0.012743 -0.016302
+0.004398 -0.018403 -0.016302
+0.004398 -0.018403 -0.005646
+0.004398 -0.012743 -0.005646
 0.002006 -0.012743 -0.016302
 0.002006 -0.018403 -0.016302
 0.002006 -0.018403 -0.005646
@@ -22,56 +25,42 @@ numvert 8
 0.004398 -0.018403 -0.016302
 0.004398 -0.018403 -0.005646
 0.004398 -0.012743 -0.005646
-numsurf 4
+numsurf 5
 SURF 0x00
 mat 1
 refs 4
 0 0.751193165779 0.486213296652
-4 0.751193165779 0.486213296652
-5 0.751193165779 0.402652829885
-1 0.751193165779 0.402652829885
-SURF 0x00
-mat 1
-refs 4
-1 0.751193165779 0.402652829885
-5 0.751193165779 0.402652829885
-6 0.664250850677 0.402652829885
-2 0.664250850677 0.402652829885
-SURF 0x00
-mat 1
-refs 4
-2 0.664250850677 0.402652829885
-6 0.664250850677 0.402652829885
-7 0.664250850677 0.486213296652
 3 0.664250850677 0.486213296652
+2 0.664250850677 0.402652829885
+1 0.751193165779 0.402652829885
 SURF 0x00
 mat 1
 refs 4
 4 0.751193165779 0.486213296652
-0 0.751193165779 0.486213296652
-3 0.664250850677 0.486213296652
-7 0.664250850677 0.486213296652
-kids 0
-OBJECT poly
-name "CTL.btn_1"
-data 4
-Cube
-texture "M877.png"
-texrep 1 1
-crease 30.000000
-numvert 4
-0.004398 -0.012743 -0.016302
-0.004398 -0.018403 -0.016302
-0.004398 -0.018403 -0.005646
-0.004398 -0.012743 -0.005646
-numsurf 1
+8 0.751193165779 0.486213296652
+9 0.751193165779 0.402652829885
+5 0.751193165779 0.402652829885
 SURF 0x00
 mat 1
 refs 4
-0 0.751193165779 0.486213296652
-3 0.664250850677 0.486213296652
-2 0.664250850677 0.402652829885
-1 0.751193165779 0.402652829885
+5 0.751193165779 0.402652829885
+9 0.751193165779 0.402652829885
+10 0.664250850677 0.402652829885
+6 0.664250850677 0.402652829885
+SURF 0x00
+mat 1
+refs 4
+6 0.664250850677 0.402652829885
+10 0.664250850677 0.402652829885
+11 0.664250850677 0.486213296652
+7 0.664250850677 0.486213296652
+SURF 0x00
+mat 1
+refs 4
+8 0.751193165779 0.486213296652
+4 0.751193165779 0.486213296652
+7 0.664250850677 0.486213296652
+11 0.664250850677 0.486213296652
 kids 0
 OBJECT poly
 name "HR.001"
@@ -949,36 +938,46 @@ refs 4
 15 0.553054749966 0.963210463524
 kids 0
 OBJECT poly
+name "M877.colon"
+data 5
+Plane
+texture "M877.png"
+texrep 1 1
+crease 30.000000
+numvert 4
+0.000961 0.010318 0.000855
+0.000961 0.000885 0.000855
+0.000961 0.000885 -0.001969
+0.000961 0.010318 -0.001969
+numsurf 1
+SURF 0x00
+mat 2
+refs 4
+3 0.957149386406 0.984786868095
+0 0.924547255039 0.984786868095
+1 0.924547195435 0.693980753422
+2 0.957149386406 0.693980753422
+kids 0
+OBJECT poly
 name "M877.display"
 data 9
 Plane.469
 texture "M877.png"
 texrep 1 1
 crease 30.000000
-numvert 8
-0.000961 0.010318 -0.001969
-0.000961 0.000885 -0.001969
-0.000961 0.000885 0.000855
-0.000961 0.010318 0.000855
+numvert 4
 0.000579 0.0142 -0.022098
 0.000579 -0.004183 -0.022098
 0.000579 -0.004183 0.022112
 0.000579 0.0142 0.022112
-numsurf 2
+numsurf 1
 SURF 0x00
 mat 2
 refs 4
-0 0.957149386406 0.984786868095
-3 0.924547255039 0.984786868095
-2 0.924547195435 0.693980753422
-1 0.957149386406 0.693980753422
-SURF 0x00
-mat 2
-refs 4
-4 0.976998031139 0.596293568611
-7 0.902328789234 0.596293568611
-6 0.902328789234 0.480971485376
-5 0.976998031139 0.480971485376
+0 0.976998031139 0.596293568611
+3 0.902328789234 0.596293568611
+2 0.902328789234 0.480971485376
+1 0.976998031139 0.480971485376
 kids 0
 OBJECT poly
 name "MN.001"
@@ -1022,15 +1021,18 @@ refs 4
 2 0.0181855931878 0.00866907835007
 1 0.0918634906411 0.00866907835007
 kids 0
-OBJECT group
-name "SEL.btn"
-kids 2
 OBJECT poly
-name "SEL.btn_0"
+name "SEL.btn"
 data 8
-Cube.001
+Cube.002
+texture "M877.png"
+texrep 1 1
 crease 30.000000
-numvert 8
+numvert 12
+0.004398 -0.012743 0.006863
+0.004398 -0.018403 0.006863
+0.004398 -0.018403 0.01752
+0.004398 -0.012743 0.01752
 0.002006 -0.012743 0.006863
 0.002006 -0.018403 0.006863
 0.002006 -0.018403 0.01752
@@ -1039,56 +1041,63 @@ numvert 8
 0.004398 -0.018403 0.006863
 0.004398 -0.018403 0.01752
 0.004398 -0.012743 0.01752
-numsurf 4
+numsurf 5
 SURF 0x00
 mat 1
 refs 4
 0 0.75237852335 0.796478271484
-4 0.75237852335 0.796478271484
-5 0.75237852335 0.708643317223
+3 0.66299623251 0.796478271484
+2 0.66299623251 0.708643317223
 1 0.75237852335 0.708643317223
 SURF 0x00
 mat 1
 refs 4
-1 0.75237852335 0.708643317223
-5 0.75237852335 0.708643317223
-6 0.66299623251 0.708643317223
-2 0.66299623251 0.708643317223
+4 0.750929892063 0.795054674149
+8 0.750929892063 0.795054674149
+9 0.750929892063 0.710066914558
+5 0.750929892063 0.710066914558
 SURF 0x00
 mat 1
 refs 4
-2 0.66299623251 0.708643317223
-6 0.66299623251 0.708643317223
-7 0.66299623251 0.796478271484
-3 0.66299623251 0.796478271484
+5 0.750929892063 0.710066914558
+9 0.750929892063 0.710066914558
+10 0.664444863796 0.710066914558
+6 0.664444863796 0.710066914558
 SURF 0x00
 mat 1
 refs 4
-4 0.75237852335 0.796478271484
-0 0.75237852335 0.796478271484
-3 0.66299623251 0.796478271484
-7 0.66299623251 0.796478271484
+6 0.664444863796 0.710066914558
+10 0.664444863796 0.710066914558
+11 0.664444863796 0.795054674149
+7 0.664444863796 0.795054674149
+SURF 0x00
+mat 1
+refs 4
+8 0.750929892063 0.795054674149
+4 0.750929892063 0.795054674149
+7 0.664444863796 0.795054674149
+11 0.664444863796 0.795054674149
 kids 0
 OBJECT poly
-name "SEL.btn_1"
+name "SET.btn"
 data 8
-Cube.001
+Cube.004
 texture "M877.png"
 texrep 1 1
 crease 30.000000
 numvert 4
-0.004398 -0.012743 0.006863
-0.004398 -0.018403 0.006863
-0.004398 -0.018403 0.01752
-0.004398 -0.012743 0.01752
+0.0019 -0.012311 0.005884
+0.0019 -0.019511 0.005884
+0.0019 -0.019511 -0.004815
+0.0019 -0.012311 -0.004815
 numsurf 1
 SURF 0x00
-mat 1
+mat 3
 refs 4
-0 0.75237852335 0.796478271484
-3 0.66299623251 0.796478271484
-2 0.66299623251 0.708643317223
-1 0.75237852335 0.708643317223
+3 0.838916540146 0.523605704308
+0 0.791258811951 0.523605704308
+1 0.791258811951 0.466369539499
+2 0.838916540146 0.466369539499
 kids 0
 OBJECT poly
 name "et"
diff --git a/Aircraft/Instruments-3d/clock/M877/m877.xml b/Aircraft/Instruments-3d/clock/M877/m877.xml
index c050c1336..2e56ab932 100644
--- a/Aircraft/Instruments-3d/clock/M877/m877.xml
+++ b/Aircraft/Instruments-3d/clock/M877/m877.xml
@@ -3,13 +3,21 @@
 
     <path>m877.ac</path>
 
+<animation>
+    <type>select</type>
+    <object-name>M877.colon</object-name>
+    <condition>
+        <property>instrumentation/clock/m877/power</property>
+    </condition>
+</animation>
+
 <animation>
     <type>select</type>
     <object-name>gmt</object-name>
     <condition>
         <equals>
-            <property>instrumentation/clock/m877/mode</property>
-            <value>0</value>
+            <property>instrumentation/clock/m877/mode-string</property>
+            <value>GMT</value>
         </equals>
     </condition>
 </animation>
@@ -19,8 +27,8 @@
     <object-name>lt</object-name>
     <condition>
         <equals>
-            <property>instrumentation/clock/m877/mode</property>
-            <value>1</value>
+            <property>instrumentation/clock/m877/mode-string</property>
+            <value>LT</value>
         </equals>
     </condition>
 </animation>
@@ -30,8 +38,8 @@
     <object-name>ft</object-name>
     <condition>
         <equals>
-            <property>instrumentation/clock/m877/mode</property>
-            <value>2</value>
+            <property>instrumentation/clock/m877/mode-string</property>
+            <value>FT</value>
         </equals>
     </condition>
 </animation>
@@ -41,12 +49,44 @@
     <object-name>et</object-name>
     <condition>
         <equals>
-            <property>instrumentation/clock/m877/mode</property>
-            <value>3</value>
+            <property>instrumentation/clock/m877/mode-string</property>
+            <value>ET</value>
         </equals>
     </condition>
 </animation>
 
+<animation>
+    <type>select</type>
+    <object-name>HR.001</object-name>
+    <condition>
+        <property>instrumentation/clock/m877/digit[3]</property>
+    </condition>
+</animation>
+
+<animation>
+    <type>select</type>
+    <object-name>HR.002</object-name>
+    <condition>
+        <property>instrumentation/clock/m877/digit[2]</property>
+    </condition>
+</animation>
+
+<animation>
+    <type>select</type>
+    <object-name>MN.001</object-name>
+    <condition>
+        <property>instrumentation/clock/m877/digit[1]</property>
+    </condition>
+</animation>
+
+<animation>
+    <type>select</type>
+    <object-name>MN.002</object-name>
+    <condition>
+        <property>instrumentation/clock/m877/digit[0]</property>
+    </condition>
+</animation>
+
 <animation>
     <type>textranslate</type>
     <object-name>HR.001</object-name>
@@ -101,6 +141,19 @@
 
 <!-- -hotspots -->
 
+<animation>
+    <type>pick</type>
+    <object-name>SEL.btn</object-name>
+    <action>
+        <button>0</button>
+        <repeatable>false</repeatable>
+        <binding>
+                 <command>nasal</command>
+                <script>m877.davtron.select_display();</script>
+       </binding>
+    </action>
+</animation>
+
 <animation>
     <type>pick</type>
     <object-name>CTL.btn</object-name>
@@ -109,10 +162,22 @@
         <repeatable>false</repeatable>
         <binding>
                  <command>nasal</command>
-                <script>m877.davtron.set_clock();</script>
+                <script>m877.davtron.control_action();</script>
        </binding>
     </action>
 </animation>
 
+<animation>
+    <type>pick</type>
+    <object-name>SET.btn</object-name>
+    <action>
+        <button>1</button>
+        <repeatable>false</repeatable>
+        <binding>
+                 <command>nasal</command>
+                <script>m877.davtron.set_time();</script>
+       </binding>
+    </action>
+</animation>
 
 </PropertyList>
\ No newline at end of file