diff --git a/custom_physics.lua b/custom_physics.lua
index 6a9034a..de7bc6f 100755
--- a/custom_physics.lua
+++ b/custom_physics.lua
@@ -81,7 +81,13 @@ function ap_airship.physics(self)
         self.object:set_velocity(velocity)
     end
     --minetest.chat_send_all("_baloon_buoyancy: "..self._baloon_buoyancy.." - dtime: "..self.dtime.." - ideal: "..ap_airship.ideal_step)
-    airutils.set_acceleration(self.object,{x=0,y=y_accel,z=0})
 
+    local max_y_speed = 1.5
+    local curr_y_speed = vel.y
+    if curr_y_speed < max_y_speed then
+        airutils.set_acceleration(self.object,{x=0,y=y_accel,z=0})
+    else
+        airutils.set_acceleration(self.object,{x=0,y=0,z=0})
+    end
     
 end