diff --git a/Models/Instruments/Upper-ECAM/Upper-ECAM.nas b/Models/Instruments/Upper-ECAM/Upper-ECAM.nas
index f731ca69..96da4856 100644
--- a/Models/Instruments/Upper-ECAM/Upper-ECAM.nas
+++ b/Models/Instruments/Upper-ECAM/Upper-ECAM.nas
@@ -34,6 +34,7 @@ var du3_test = props.globals.initNode("/instrumentation/du/du3-test", 0, "BOOL")
 var du3_test_time = props.globals.initNode("/instrumentation/du/du3-test-time", 0.0, "DOUBLE");
 var du3_test_amount = props.globals.initNode("/instrumentation/du/du3-test-amount", 0.0, "DOUBLE");
 var du3_offtime = props.globals.initNode("/instrumentation/du/du3-off-time", 0.0, "DOUBLE");
+var slatLockFlash = props.globals.initNode("/instrumentation/du/slat-lock-flash", 0, "BOOL");
 
 # Fetch nodes:
 var acconfig_weight_kgs = props.globals.getNode("/systems/acconfig/options/weight-kgs", 1);
@@ -97,6 +98,7 @@ var ECAM_line7c = props.globals.getNode("/ECAM/msg/linec7", 1);
 var ECAM_line8c = props.globals.getNode("/ECAM/msg/linec8", 1);
 var ECAMleft = props.globals.getNode("/ECAM/left-msg", 1);
 var ECAMright = props.globals.getNode("/ECAM/right-msg", 1);
+var slatsLocked = props.globals.getNode("/fdm/jsbsim/fcs/slat-locked", 1);
 var rate = props.globals.getNode("/systems/acconfig/options/uecam-rate", 1);
 
 var canvas_upperECAM_base = {
@@ -253,6 +255,24 @@ var canvas_upperECAM_base = {
 			me["FlapDots"].hide();
 		}
 		
+		if (slatsLocked.getValue() == 1) {
+			if (slatLockGoing == 0) {
+				slatLockGoing = 1;
+			}
+			if (slatLockGoing == 1) {
+				slatLockTimer.start();
+				if (slatLockFlash.getValue() == 1) {
+					me["SlatAlphaLock"].show();	
+				} else {
+					me["SlatAlphaLock"].hide();	
+				}
+			}
+		} else {
+			slatLockTimer.stop();
+			slatLockGoing = 0;
+			me["SlatAlphaLock"].hide();	
+		}
+		
 		# FOB
 		if (acconfig_weight_kgs.getValue() == 1)
 		{
@@ -626,7 +646,7 @@ var canvas_upperECAM_cfm_eis2 = {
 		"EGT2-scale","EGT2-box","EGT2-scale2","EGT2-scaletick","EGT2-XX","N22","N22-decpnt","N22-decimal","N22-XX","FF2","FF2-XX","FOB-LBS","FlapTxt","FlapDots","N1Lim-mode","N1Lim","N1Lim-decpnt","N1Lim-decimal","N1Lim-percent","N1Lim-XX","N1Lim-XX2","REV1",
 		"REV1-box","REV2","REV2-box","ECAM_Left","ECAML1","ECAML2","ECAML3","ECAML4","ECAML5","ECAML6","ECAML7","ECAML8","ECAMR1", "ECAMR2", "ECAMR3", "ECAMR4", "ECAMR5", "ECAMR6", "ECAMR7", "ECAMR8", "ECAM_Right", "TO_Memo","TO_Autobrake","TO_Signs","TO_Spoilers","TO_Flaps","TO_Config","TO_Autobrake_B","TO_Signs_B","TO_Spoilers_B","TO_Flaps_B",
 		"TO_Config_B","LDG_Memo","LDG_Gear","LDG_Signs","LDG_Spoilers","LDG_Flaps","LDG_Gear_B","LDG_Signs_B","LDG_Spoilers_B","LDG_Flaps_B","LDG_Flaps_B3",
-		"FOB-weight-unit","FFlow-weight-unit"];
+		"FOB-weight-unit","FFlow-weight-unit","SlatAlphaLock"];
 	},
 	update: func() {
 		# N1
@@ -879,7 +899,7 @@ var canvas_upperECAM_iae_eis2 = {
 		"EPR2-decimal","EPR2-box","EPR2-scale","EPR2-scaletick","EPR2-scalenum","EPR2-XX","EPR2-XX2","EGT2-needle","EGT2","EGT2-scale","EGT2-scale2","EGT2-box","EGT2-scaletick","EGT2-XX","N12-needle","N12-thr","N12-ylim","N12","N12-decpnt","N12-decimal",
 		"N12-scale","N12-scale2","N12-scaletick","N12-scalenum","N12-XX","N22","N22-decpnt","N22-decimal","N22-XX","FF2","FF2-XX","FOB-LBS","FlapTxt","FlapDots","EPRLim-mode","EPRLim","EPRLim-decpnt","EPRLim-decimal","EPRLim-XX","EPRLim-XX2","REV1","REV1-box",
 		"REV2","REV2-box","ECAM_Left","ECAML1","ECAML2","ECAML3","ECAML4","ECAML5","ECAML6","ECAML7","ECAML8", "ECAMR1", "ECAMR2", "ECAMR3", "ECAMR4", "ECAMR5", "ECAMR6", "ECAMR7", "ECAMR8", "ECAM_Right", "TO_Memo","TO_Autobrake","TO_Signs","TO_Spoilers","TO_Flaps","TO_Config","TO_Autobrake_B","TO_Signs_B","TO_Spoilers_B","TO_Flaps_B","TO_Config_B",
-		"LDG_Memo","LDG_Gear","LDG_Signs","LDG_Spoilers","LDG_Flaps","LDG_Gear_B","LDG_Signs_B","LDG_Spoilers_B","LDG_Flaps_B","LDG_Flaps_B3", "FFlow1-weight-unit", "FFlow2-weight-unit", "FOB-weight-unit"];
+		"LDG_Memo","LDG_Gear","LDG_Signs","LDG_Spoilers","LDG_Flaps","LDG_Gear_B","LDG_Signs_B","LDG_Spoilers_B","LDG_Flaps_B","LDG_Flaps_B3", "FFlow1-weight-unit", "FFlow2-weight-unit", "FOB-weight-unit","SlatAlphaLock"];
 	},
 	update: func() {
 		N1_1_cur = N1_1.getValue();
@@ -1264,3 +1284,13 @@ var showUpperECAM = func {
 setlistener("/systems/electrical/bus/ac-ess", func() {
 	canvas_upperECAM_base.updateDu3();
 }, 0, 0);
+
+
+var slatLockGoing = 0;
+var slatLockTimer = maketimer(0.50, func {
+	if (!slatLockFlash.getBoolValue()) {
+		slatLockFlash.setBoolValue(1);
+	} else {
+		slatLockFlash.setBoolValue(0);
+	}
+});
\ No newline at end of file
diff --git a/Models/Instruments/Upper-ECAM/res/cfm-eis2.svg b/Models/Instruments/Upper-ECAM/res/cfm-eis2.svg
index 60b59f29..ddb88681 100644
--- a/Models/Instruments/Upper-ECAM/res/cfm-eis2.svg
+++ b/Models/Instruments/Upper-ECAM/res/cfm-eis2.svg
@@ -12,7 +12,7 @@
    viewBox="0 0 1024 1024"
    version="1.1"
    id="svg2"
-   inkscape:version="0.92.2 (5c3e80d, 2017-08-06)"
+   inkscape:version="0.92.4 (5da689c313, 2019-01-14)"
    sodipodi:docname="cfm-eis2.svg">
   <metadata
      id="metadata375">
@@ -40,10 +40,10 @@
      inkscape:window-width="1366"
      inkscape:window-height="705"
      id="namedview371"
-     showgrid="false"
-     inkscape:zoom="0.50000001"
-     inkscape:cx="659.36853"
-     inkscape:cy="512.09207"
+     showgrid="true"
+     inkscape:zoom="1.4142136"
+     inkscape:cx="832.32702"
+     inkscape:cy="561.61738"
      inkscape:window-x="-8"
      inkscape:window-y="-8"
      inkscape:window-maximized="1"
@@ -1852,4 +1852,16 @@
          id="tspan1108"
          sodipodi:role="line">LINE 8</tspan></text>
   </g>
+  <text
+     xml:space="preserve"
+     style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:30px;line-height:1.25;font-family:'Liberation Sabs';-inkscape-font-specification:'Liberation Sabs';letter-spacing:0px;word-spacing:0px;fill:#0dc04b;fill-opacity:1;stroke:none;stroke-width:0.75"
+     x="650.08069"
+     y="575.68427"
+     id="SlatAlphaLock"
+     inkscape:label="#text4800"><tspan
+       sodipodi:role="line"
+       id="tspan4798"
+       x="650.08069"
+       y="575.68427"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:31.25px;font-family:'Liberation Sans';-inkscape-font-specification:'Liberation Sans';fill:#0dc04b;fill-opacity:1;stroke-width:0.75">A-LOCK</tspan></text>
 </svg>
diff --git a/Models/Instruments/Upper-ECAM/res/iae-eis2.svg b/Models/Instruments/Upper-ECAM/res/iae-eis2.svg
index 7528bc69..9adb1a60 100644
--- a/Models/Instruments/Upper-ECAM/res/iae-eis2.svg
+++ b/Models/Instruments/Upper-ECAM/res/iae-eis2.svg
@@ -2220,4 +2220,16 @@
          id="tspan1162"
          sodipodi:role="line">LINE 8</tspan></text>
   </g>
+  <text
+     xml:space="preserve"
+     style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:30px;line-height:1.25;font-family:'Liberation Sabs';-inkscape-font-specification:'Liberation Sabs';letter-spacing:0px;word-spacing:0px;fill:#0dc04b;fill-opacity:1;stroke:none;stroke-width:0.75"
+     x="650.08069"
+     y="575.68427"
+     id="SlatAlphaLock"
+     inkscape:label="#text4800"><tspan
+       sodipodi:role="line"
+       id="tspan4798"
+       x="650.08069"
+       y="575.68427"
+       style="font-style:normal;font-variant:normal;font-weight:normal;font-stretch:normal;font-size:31.25px;font-family:'Liberation Sans';-inkscape-font-specification:'Liberation Sans';fill:#0dc04b;fill-opacity:1;stroke-width:0.75">A-LOCK</tspan></text>
 </svg>
diff --git a/Systems/a320-fcs.xml b/Systems/a320-fcs.xml
index 0d8af793..85fa3186 100644
--- a/Systems/a320-fcs.xml
+++ b/Systems/a320-fcs.xml
@@ -646,8 +646,49 @@
 	
 	<channel name="Slats">
 		
+		<switch name="fcs/slat-locked-cmd">
+			<default value="0"/>
+			<test logic="AND" value="1">
+				fcs/slat-locked-cmd eq 1
+				<test logic="OR">
+					/gear/gear[1]/wow ne 1
+					/velocities/airspeed-kt ge 60
+				</test>
+				<test logic="OR">
+					aero/alpha-deg gt 7.6
+					/systems/navigation/adr/output/cas-1 lt 154
+				</test>
+			</test>
+			<test logic="AND" value="1">
+				fcs/slat-locked-cmd eq 0
+				/controls/flight/flaps-input ne 0
+				<test logic="OR">
+					/gear/gear[1]/wow ne 1
+					/velocities/airspeed-kt ge 60
+				</test>
+				<test logic="OR">
+					aero/alpha-deg gt 8.5
+					/systems/navigation/adr/output/cas-1 lt 148
+				</test>
+			</test>
+		</switch>
+		
+		<switch name="fcs/slat-locked">
+			<default value="0"/>
+			<test logic="AND" value="1">
+				/controls/flight/flaps-input eq 0
+				fcs/slat-pos-deg le 18.01
+				fcs/slat-locked-cmd eq 1
+			</test>
+		</switch>
+		
 		<switch name="fcs/slat-pos-rate">
 			<default value="0.0"/>
+			<test logic="AND" value="0.0">
+				/controls/flight/flaps-input eq 0
+				fcs/slat-pos-deg le 18.01
+				fcs/slat-locked eq 1
+			</test>
 			<test value="100">
 				/systems/acconfig/autoconfig-running eq 1
 			</test>