diff --git a/src/station.cpp b/src/station.cpp
--- a/src/station.cpp
+++ b/src/station.cpp
@@ -40,7 +40,6 @@ Station::Station(TileIndex tile) :
 	SpecializedStation<Station, false>(tile),
 	bus_station(INVALID_TILE, 0, 0),
 	truck_station(INVALID_TILE, 0, 0),
-	airport(INVALID_TILE, 0, 0),
 	dock_tile(INVALID_TILE),
 	indtype(IT_INVALID),
 	time_since_load(255),
@@ -223,7 +222,7 @@ uint Station::GetCatchmentRadius() const
 		if (this->truck_stops        != NULL)         ret = max<uint>(ret, CA_TRUCK);
 		if (this->train_station.tile != INVALID_TILE) ret = max<uint>(ret, CA_TRAIN);
 		if (this->dock_tile          != INVALID_TILE) ret = max<uint>(ret, CA_DOCK);
-		if (this->airport.tile       != INVALID_TILE) ret = max<uint>(ret, this->GetAirportSpec()->catchment);
+		if (this->airport.tile       != INVALID_TILE) ret = max<uint>(ret, this->airport.GetSpec()->catchment);
 	} else {
 		if (this->bus_stops != NULL || this->truck_stops != NULL || this->train_station.tile != INVALID_TILE || this->dock_tile != INVALID_TILE || this->airport.tile != INVALID_TILE) {
 			ret = CA_UNMODIFIED;