diff --git a/.github/CHANGELOG.md b/.github/CHANGELOG.md
index c6abdfea87b..2f6eae7bd0c 100644
--- a/.github/CHANGELOG.md
+++ b/.github/CHANGELOG.md
@@ -5,6 +5,7 @@
 <!--  1. [Changed Area] Title of changes - @github username (Name)  -->
 
 ## 0.6.0
+1. [HYD] First hydraulics systems integration - @crocket63 (crocket)
 1. [CDU] Added WIND page - @tyler58546 (tyler58546)
 1. [SOUND] Improved engine startup and fly by sound - @hotshotp (Boris#9134)
 1. [SOUND] Added new vent test and ext pwr relay random sounds - @hotshotp (Boris#9134)
diff --git a/docs/a320-simvars.md b/docs/a320-simvars.md
index d1f492e56bc..fb117e1d7b2 100644
--- a/docs/a320-simvars.md
+++ b/docs/a320-simvars.md
@@ -99,43 +99,43 @@
     - Bool
     - True if pedestal door video button is being held
 
-- A32NX_HYD_ENG1PUMP_FAULT
+- A32NX_OVHD_HYD_ENG_1_PUMP_PB_HAS_FAULT
     - Bool
     - True if engine 1 hyd pump fault
 
-- A32NX_HYD_ENG1PUMP_TOGGLE
+- A32NX_OVHD_HYD_ENG_1_PUMP_PB_IS_AUTO
     - Bool
     - True if engine 1 hyd pump is on
 
-- A32NX_HYD_ENG2PUMP_FAULT
+- A32NX_OVHD_HYD_ENG_2_PUMP_PB_HAS_FAULT
     - Bool
     - True if engine 2 hyd pump fault
 
-- A32NX_HYD_ENG2PUMP_TOGGLE
+- A32NX_OVHD_HYD_ENG_2_PUMP_PB_IS_AUTO
     - Bool
     - True if engine 2 hyd pump is on
 
-- A32NX_HYD_ELECPUMP_FAULT
+- A32NX_OVHD_HYD_EPUMPB_PB_HAS_FAULT
     - Bool
     - True if elec hyd pump fault
 
-- A32NX_HYD_ELECPUMP_TOGGLE
+- A32NX_OVHD_HYD_EPUMPB_PB_IS_AUTO
     - Bool
     - True if elec hyd pump is on/auto
 
-- A32NX_HYD_PTU_FAULT
+- A32NX_OVHD_HYD_PTU_PB_HAS_FAULT
     - Bool
     - True if PTU fault
 
-- A32NX_HYD_PTU_TOGGLE
+- A32NX_OVHD_HYD_PTU_PB_IS_AUTO
     - Bool
     - True if PTU system on/auto
 
-- A32NX_HYD_ELECPUMPY_FAULT
+- A32NX_OVHD_HYD_EPUMPY_PB_HAS_FAULT
     - Bool
     - True if yellow elec hyd pump fault
 
-- A32NX_HYD_ELECPUMPY_TOGGLE
+- A32NX_OVHD_HYD_EPUMPY_PB_IS_AUTO
     - Bool
     - True if yellow elec hyd pump is on/auto
 
@@ -223,7 +223,7 @@
     - Bool
     - True if PFD metric altitude enabled
 
-- A32NX_OVHD_HYD_BLUEPUMP_OVRD
+- A32NX_OVHD_HYD_EPUMPY_OVRD_PB_IS_ON
     - Bool
     - True if "BLUE PUMP OVRD" switch is off
 
@@ -649,3 +649,95 @@
     - {number}
         - 1
         - 2
+
+- A32NX_HYD_{loop_name}_PRESSURE
+    - Pressure
+    - Current pressure in the {loop_name} hydraulic circuit
+    - {loop_name}
+        - GREEN
+        - BLUE
+        - YELLOW
+
+- A32NX_HYD_{loop_name}_RESERVOIR
+    - Volume
+    - Current fluid level in the {loop_name} hydraulic circuit reservoir
+    - {loop_name}
+        - GREEN
+        - BLUE
+        - YELLOW
+
+- A32NX_HYD_{loop_name}_EDPUMP_ACTIVE
+    - Bool
+    - Engine driven pump of {loop_name} hydraulic circuit is active
+    - {loop_name}
+        - GREEN
+        - YELLOW
+
+- A32NX_HYD_{loop_name}_EDPUMP_LOW_PRESS
+    - Bool
+    - Engine driven pump of {loop_name} hydraulic circuit is active but pressure is too low
+    - {loop_name}
+        - GREEN
+        - YELLOW
+
+- A32NX_HYD_{loop_name}_EPUMP_ACTIVE
+    - Bool
+    - Electric pump of {loop_name} hydraulic circuit is active
+    - {loop_name}
+        - BLUE
+        - YELLOW
+
+- A32NX_HYD_{loop_name}_EPUMP_LOW_PRESS
+    - Bool
+    - Electric pump of {loop_name} hydraulic circuit is active but pressure is too low
+    - {loop_name}
+        - BLUE
+        - YELLOW
+
+- A32NX_HYD_{loop_name}_FIRE_VALVE_OPENED
+    - Bool
+    - Engine driven pump of {loop_name} hydraulic circuit can receive hydraulic fluid
+    - {loop_name}
+        - GREEN
+        - YELLOW
+
+- A32NX_HYD_PTU_VALVE_OPENED
+    - Bool
+    - Power Transfer Unit can receive fluid from yellow and green circuits
+
+- A32NX_HYD_PTU_ACTIVE_{motor_side}
+    - Bool
+    - Power Transfer Unit is trying to transfer hydraulic power from either yellow to green or green to yellow circuits
+    - {motor_side}
+        - Y2G
+        - G2Y
+
+- A32NX_HYD_PTU_MOTOR_FLOW
+    - Gallon per second
+    - Power Transfer Unit instantaneous flow in motor side
+
+- A32NX_HYD_RAT_STOW_POSITION
+    - Position [0.0 : 1.0]
+    - RAT position, from fully stowed (0) to fully deployed (1)
+
+- A32NX_HYD_RAT_RPM
+    - Rpm
+    - RAT propeller current RPM
+
+- A32NX_HYD_BRAKE_NORM_{brake_side}_PRESS
+    - psi
+    - Current pressure in brake slave circuit on green brake circuit
+    - {brake_side}
+        - LEFT
+        - RIGHT
+
+- A32NX_HYD_BRAKE_ALTN_{brake_side}_PRESS
+    - psi
+    - Current pressure in brake slave circuit on yellow alternate brake circuit
+    - {brake_side}
+        - LEFT
+        - RIGHT
+
+- A32NX_HYD_BRAKE_ALTN_ACC_PRESS
+    - psi
+    - Current pressure in brake accumulator on yellow alternate brake circuit