@@ -84,6 +84,9 @@ var displayClass = {

                     'Rose',

                     'Heading-bug',

                     'PFD-Widgets',

+                    'Trends',

+                    'Airspeed-Trend-Indicator',

+                    'Altitude-Trend-Indicator',

                 );

                 append(groups.hide,

                     'CDI',

@@ -315,8 +318,20 @@ var displayClass = {

             .setTranslation(0,(math.mod(ias,10) + (ias >= 10)*10) * 36);

         me.screenElements.SpeedTape

             .setTranslation(0,ias * 5.711);

+        var now = systime();

+        # estimated speed in 6s

+        var Sy = 6 * (ias - me._last_ias_kt) / (now - me._last_ias_s);

+        if (abs(Sy) > 30)

+            Sy = 30 * abs(Sy)/Sy; # = -30 or 30

+        me.screenElements['Airspeed-Trend-Indicator']

+            .setScale(1,Sy)

+            .setTranslation(0, -284.5 * (Sy - 1));

+        me._last_ias_kt = ias;

+        me._last_ias_s = now;

         settimer(func me.updateIAS(getprop('/velocities/airspeed-kt')), 0.1);

     },

+    _last_ias_kt : 0,

+    _last_ias_s : systime(),

 #}}}

     updateALT: func (alt) {

@@ -457,8 +472,20 @@ var displayClass = {

                 me.screenElements["AltSmallD"~place].setTranslation(offset,0);

             }

         }

+        var now = systime();

+        # altitude in 6s

+        var Sy = .3 * (alt - me._last_alt_ft) / (now - me._last_alt_s); # scale = 1/20ft

+        if (abs(Sy) > 15)

+            Sy = 15 * abs(Sy)/Sy; # = -15 or 15

+        me.screenElements['Altitude-Trend-Indicator']

+            .setScale(1,Sy)

+            .setTranslation(0, -284.5 * (Sy - 1));

+        me._last_alt_ft = alt;

+        me._last_alt_s = now;

         settimer(func me.updateALT(getprop('instrumentation/altimeter/indicated-altitude-ft')), 0.2);

     },

+    _last_alt_ft : 0,

+    _last_alt_s  : systime(),

 #}}}

     updateHSI : func (hdg) {

@@ -915,23 +915,25 @@

       </g>

     </g>

     <g

-       id="layer23"

-       inkscape:label="Trent"

+       id="Trends"

+       inkscape:label="Trends"

        style="display:inline">

       <rect

-         style="opacity:1;fill:#ff00ff;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

-         id="rect5430"

+         style="opacity:1;fill:#ff00ff;fill-opacity:1;stroke:none;stroke-width:0.18398723;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

+         id="Airspeed-Trend-Indicator"

          width="3"

-         height="170.5"

+         height="5.7716465"

          x="240"

-         y="114" />

+         y="278.75592"

+         inkscape:label="Airspeed-Trend-Indicator" />

       <rect

-         style="display:inline;opacity:1;fill:#ff00ff;fill-opacity:1;stroke:none;stroke-width:1;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

-         id="rect5434"

+         style="display:inline;opacity:1;fill:#ff00ff;fill-opacity:1;stroke:none;stroke-width:0.26083553;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1"

+         id="Altitude-Trend-Indicator"

          width="3"

-         height="170.5"

+         height="11.6"

          x="704"

-         y="114" />

+         y="272.89999"

+         inkscape:label="Altitude-Trend-Indicator" />

     </g>

     <g

        id="VDI"