diff --git a/Nasal/FMGC/FMGC.nas b/Nasal/FMGC/FMGC.nas
index 532532ea..2bde3628 100644
--- a/Nasal/FMGC/FMGC.nas
+++ b/Nasal/FMGC/FMGC.nas
@@ -1015,12 +1015,6 @@ var reset_FMGC = func {
 	setprop("systems/pressurization/diff-to-target", "0");
 	setprop("systems/pressurization/ditchingpb", 0);
 	setprop("systems/pressurization/targetvs", "0");
-	setprop("systems/ventilation/cabin/fans", 0); # aircon fans
-	setprop("systems/ventilation/avionics/fan", 0);
-	setprop("systems/ventilation/avionics/extractvalve", "0");
-	setprop("systems/ventilation/avionics/inletvalve", "0");
-	setprop("systems/ventilation/lavatory/extractfan", 0);
-	setprop("systems/ventilation/lavatory/extractvalve", "0");
 	setprop("systems/pressurization/ambientpsi", "0");
 	setprop("systems/pressurization/cabinpsi", "0");
 	
diff --git a/Nasal/Systems/hydraulics.nas b/Nasal/Systems/hydraulics.nas
index 1497f52a..3b95f47b 100644
--- a/Nasal/Systems/hydraulics.nas
+++ b/Nasal/Systems/hydraulics.nas
@@ -4,14 +4,11 @@
 # Copyright (c) 2019 Jonathan Redpath
 
 var accum = 0;
-var parking = 0;
-var askidnws_sw = 0;
 var down = 0;
 
 var HYD = {
 	Brakes: {
 		accumPressPsi: props.globals.initNode("/systems/hydraulic/brakes/accumulator-pressure-psi", 0, "INT"),
-		accumPressPsi1: props.globals.initNode("/systems/hydraulic/brakes/accumulator-pressure-psi-1", 0, "INT"),
 		leftPressPsi: props.globals.initNode("/systems/hydraulic/brakes/pressure-left-psi", 0, "INT"),
 		rightPressPsi: props.globals.initNode("/systems/hydraulic/brakes/pressure-right-psi", 0, "INT"),
 		askidSw: props.globals.initNode("/systems/hydraulic/brakes/askidnwssw", 1, "BOOL"),
@@ -86,22 +83,11 @@ var HYD = {
 	},
 	loop: func() {
 		accum = me.Brakes.accumPressPsi.getValue();
-		parking = getprop("/controls/gear/brake-parking");
-		askidnws_sw = me.Brakes.askidSw.getBoolValue();
 		
-		if (!parking and askidnws_sw and me.Psi.green.getValue() > 2500) {
-			# set mode to on
-			me.Brakes.mode.setValue(1);
-		} else if ((!parking and askidnws_sw and me.Psi.yellow.getValue() > 2500) or (!parking and askidnws_sw and accum > 0)) {
-			# set mode to altn
-			me.Brakes.mode.setValue(2);
-		} else {
-			# set mode to off
-			me.Brakes.mode.setValue(0);
-		}
-		
-		if (me.Brakes.mode.getValue() == 2 and me.Psi.yellow.getValue() > 2500 and accum < 700) {
-			me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() + 50);
+		if (me.Brakes.mode.getValue() == 2) {
+			if (me.Psi.yellow.getValue() > 2500 and accum < 700) {
+				me.Brakes.accumPressPsi.setValue(me.Brakes.accumPressPsi.getValue() + 50);
+			}
 		}
 	},
 };
diff --git a/Nasal/Systems/pneumatics.nas b/Nasal/Systems/pneumatics.nas
index 4da9eeee..6ba11a8d 100644
--- a/Nasal/Systems/pneumatics.nas
+++ b/Nasal/Systems/pneumatics.nas
@@ -132,12 +132,9 @@ var PNEU = {
 		setprop("/systems/pressurization/pack-2-comp-out-temp", 0);
 		setprop("/systems/pressurization/pack-1-valve", 0);
 		setprop("/systems/pressurization/pack-2-valve", 0);
-		setprop("/systems/ventilation/cabin/fans", 0); # aircon fans
-		setprop("/systems/ventilation/avionics/fan", 0);
-		setprop("/systems/ventilation/avionics/extractvalve", "0");
-		setprop("/systems/ventilation/avionics/inletvalve", "0");
-		setprop("/systems/ventilation/lavatory/extractfan", 0);
-		setprop("/systems/ventilation/lavatory/extractvalve", "0");
+		#setprop("/systems/ventilation/cabin/fans", 0); # aircon fans
+		#setprop("/systems/ventilation/avionics/extractvalve", "0");
+		#setprop("/systems/ventilation/avionics/inletvalve", "0");
 		setprop("/controls/oxygen/masksDeploy", 0);
 		setprop("/controls/oxygen/masksDeployMan", 0);
 		setprop("/controls/oxygen/masksReset", 0); # this is the TMR RESET pb on the maintenance panel, needs 3D model
@@ -199,20 +196,11 @@ var PNEU = {
 			setprop("/systems/pressurization/cabinalt", cabinalt + ((manvs / 60) / 10));
 		}
 		
-		if (ditch and auto) {
-			setprop("/systems/pressurization/outflowpos", "1");
-			setprop("/systems/ventilation/avionics/extractvalve", "1");
-			setprop("/systems/ventilation/avionics/inletvalve", "1");
-		}
-		
-		if (systems.ELEC.Bus.dcEss.getValue() >= 25 or systems.ELEC.Bus.acEss.getValue() > 110) {
-			setprop("/systems/ventilation/avionics/fan", 1);
-			setprop("/systems/ventilation/lavatory/extractfan", 1);
-		} else {
-			setprop("/systems/ventilation/avionics/fan", 0);
-			setprop("/systems/ventilation/lavatory/extractfan", 0);
-		}
-		
+		#if (ditch and auto) {
+			#setprop("/systems/pressurization/outflowpos", "1");
+			#setprop("/systems/ventilation/avionics/extractvalve", "1");
+			#setprop("/systems/ventilation/avionics/inletvalve", "1");
+		#}
 		
 		# Oxygen
 		if (cabinalt > 13500) { 
diff --git a/Systems/a320-hydraulic.xml b/Systems/a320-hydraulic.xml
index e0a87d7e..ec49d1e7 100644
--- a/Systems/a320-hydraulic.xml
+++ b/Systems/a320-hydraulic.xml
@@ -500,6 +500,27 @@
 		
 	</channel>
 	
+	<channel name="Brakes" execrate="8">
+		
+		<switch name="/systems/hydraulic/brakes/mode">
+			<default value="0"/>
+			<test logic="AND" value="1">
+				/controls/gear/brake-parking ne 1
+				/systems/hydraulic/brakes/askidnwssw eq 1
+				/systems/hydraulic/green-psi ge 2500
+			</test>
+			<test logic="AND" value="2">
+				/controls/gear/brake-parking ne 1
+				/systems/hydraulic/brakes/askidnwssw eq 1
+				/systems/hydraulic/yellow-psi ge 2500
+			</test>
+			<test logic="AND" value="2">
+				/controls/gear/brake-parking ne 1
+				/systems/hydraulic/brakes/accumulator-pressure-psi ge 0
+			</test>
+		</switch>
+	</channel>
+	
 	<channel name="Lights" execrate="8">
 	
 		<switch name="/systems/hydraulic/lights/blue-elec-fault">