diff --git a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/flight_model.cfg b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/flight_model.cfg
index 85f64480d..121bfd81d 100644
--- a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/flight_model.cfg
+++ b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/flight_model.cfg
@@ -229,7 +229,7 @@ vtail_pos_vert=23.5
 vtail_span=28.87
 vtail_sweep=43
 vtail_thickness_ratio=0.028
-wing_area=3892.23
+wing_area=3504.729
 wing_camber=3
 wing_dihedral=8
 wing_incidence=0
diff --git a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/target_performance.cfg b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/target_performance.cfg
index cfe987f9f..321404ebd 100644
--- a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/target_performance.cfg
+++ b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_A330neo/target_performance.cfg
@@ -48,7 +48,7 @@ full_flap_max_vert_dive_speed_0pctpower = 389.1,1;
 no_flap_max_flat_fall_speed_0pctpower = 87.48,1;
 
 [DOUBLE_CHECKS]
-wing_area = 5010.0,0.1;
+wing_area = 3504.729,0.1;
 wing_span = 209.97,0.1;
 htail_area = 880,0.1;
 htail_span = 63.65,0.1;
diff --git a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/flight_model.cfg b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/flight_model.cfg
index c48d9f671..fe8d5e5bc 100644
--- a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/flight_model.cfg
+++ b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/flight_model.cfg
@@ -222,7 +222,7 @@ vtail_pos_vert=23.5
 vtail_span=30
 vtail_sweep=43
 vtail_thickness_ratio=0.028
-wing_area=5010
+wing_area=3504.729
 wing_camber=3
 wing_dihedral=8
 wing_incidence=0
diff --git a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/target_performance.cfg b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/target_performance.cfg
index cfe987f9f..321404ebd 100644
--- a/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/target_performance.cfg
+++ b/hdw-a339x/src/base/headwindsim-aircraft-a330-900/SimObjects/Airplanes/Headwind_ACJ330_900/target_performance.cfg
@@ -48,7 +48,7 @@ full_flap_max_vert_dive_speed_0pctpower = 389.1,1;
 no_flap_max_flat_fall_speed_0pctpower = 87.48,1;
 
 [DOUBLE_CHECKS]
-wing_area = 5010.0,0.1;
+wing_area = 3504.729,0.1;
 wing_span = 209.97,0.1;
 htail_area = 880,0.1;
 htail_span = 63.65,0.1;
diff --git a/hdw-a339x/src/systems/fmgc/src/guidance/vnav/FlightModel.ts b/hdw-a339x/src/systems/fmgc/src/guidance/vnav/FlightModel.ts
index 0e5aa5f52..c80669f0f 100644
--- a/hdw-a339x/src/systems/fmgc/src/guidance/vnav/FlightModel.ts
+++ b/hdw-a339x/src/systems/fmgc/src/guidance/vnav/FlightModel.ts
@@ -6,7 +6,7 @@ export class FlightModel {
 
     static wingSpan = 209.97;
 
-    static wingArea = 3892.23;
+    static wingArea = 3504.729;
 
     static wingEffcyFactor = 0.72;