diff --git a/OpenRA.Mods.RA/Air/Aircraft.cs b/OpenRA.Mods.RA/Air/Aircraft.cs
index 9502290f06..762602463d 100755
--- a/OpenRA.Mods.RA/Air/Aircraft.cs
+++ b/OpenRA.Mods.RA/Air/Aircraft.cs
@@ -120,6 +120,23 @@ namespace OpenRA.Mods.RA.Air
 			Info = info;
 		}
 
+		protected void ReserveSpawnBuilding( Actor self )
+		{
+			if (self.Trait<IMove>().Altitude != 0)
+				return;
+
+			/* not spawning in the air, so try to assoc. with our afld. this is a hack. */
+			var afld = self.World.FindUnits(self.CenterLocation, self.CenterLocation)
+				.FirstOrDefault( a => a.HasTrait<Reservable>() );
+
+			if (afld == null)
+				return;
+
+			var res = afld.Trait<Reservable>();
+			if (res != null)
+				reservation = res.Reserve(afld, self, this);
+		}
+
 		public int ROT { get { return Info.ROT; } }
 		
 		public int InitialFacing { get { return Info.InitialFacing; } }
diff --git a/OpenRA.Mods.RA/Air/Plane.cs b/OpenRA.Mods.RA/Air/Plane.cs
index a8ac3cc87d..82dab3384f 100755
--- a/OpenRA.Mods.RA/Air/Plane.cs
+++ b/OpenRA.Mods.RA/Air/Plane.cs
@@ -33,19 +33,7 @@ namespace OpenRA.Mods.RA.Air
 			if (firstTick)
 			{
 				firstTick = false;
-				if (self.Trait<IMove>().Altitude == 0)
-				{	
-					/* not spawning in the air, so try to assoc. with our afld. this is a hack. */
-					var afld = self.World.FindUnits(self.CenterLocation, self.CenterLocation)
-						.FirstOrDefault( a => a.HasTrait<Reservable>() );
-
-					if (afld != null)
-					{
-						var res = afld.Trait<Reservable>();
-						if (res != null)
-							reservation = res.Reserve(afld, self, this);
-					}
-				}
+				ReserveSpawnBuilding(self);
 			}
 		}