Index: src/airport.h
===================================================================
--- src/airport.h	2008-05-24 04:54:47.000000000 +0200
+++ src/airport.h	2008-05-25 17:48:47.000000000 +0200
@@ -113,7 +113,9 @@
 	OUT_WAY_block2           = 1ULL << 31,
 /* end of new blocks */
 
-	NOTHING_block            = 1ULL << 30;
+	NOTHING_block            = 1ULL << 30,
+
+	AIRPORT_CLOSED_block     = 1ULL << 32;
 
 struct AirportMovingData {
 	int16 x;
Index: src/aircraft_cmd.cpp
===================================================================
--- src/aircraft_cmd.cpp	2008-05-18 18:51:44.000000000 +0200
+++ src/aircraft_cmd.cpp	2008-05-25 17:51:19.000000000 +0200
@@ -1684,6 +1684,7 @@
 
 	/* runway busy or not allowed to use this airstation, circle */
 	if (apc->flags & (v->subtype == AIR_HELICOPTER ? AirportFTAClass::HELICOPTERS : AirportFTAClass::AIRPLANES) &&
+			!HASBITS(st->airport_flags, AIRPORT_CLOSED_block) &&
 			st->airport_tile != 0 &&
 			(st->owner == OWNER_NONE || st->owner == v->owner)) {
 		// {32,FLYING,NOTHING_block,37}, {32,LANDING,N,33}, {32,HELILANDING,N,41},
Index: src/command_type.h
===================================================================
--- src/command_type.h	2008-04-07 22:02:36.000000000 +0200
+++ src/command_type.h	2008-05-25 17:51:53.000000000 +0200
@@ -280,6 +280,8 @@
 	CMD_CHANGE_TIMETABLE,             ///< change the timetable for a vehicle
 	CMD_SET_VEHICLE_ON_TIME,          ///< set the vehicle on time feature (timetable)
 	CMD_AUTOFILL_TIMETABLE,           ///< autofill the timetable
+
+	CMD_OPEN_CLOSE_AIRPORT,           ///< open/close an airport
 };
 
 /**
Index: src/command.cpp
===================================================================
--- src/command.cpp	2008-05-06 17:11:33.000000000 +0200
+++ src/command.cpp	2008-05-25 17:55:21.000000000 +0200
@@ -199,6 +199,8 @@
 DEF_COMMAND(CmdChangeTimetable);
 DEF_COMMAND(CmdSetVehicleOnTime);
 DEF_COMMAND(CmdAutofillTimetable);
+
+DEF_COMMAND(CmdOpenCloseAirport);
 #undef DEF_COMMAND
 
 /**
@@ -348,6 +350,8 @@
 	{CmdChangeTimetable,                     0}, /* CMD_CHANGE_TIMETABLE */
 	{CmdSetVehicleOnTime,                    0}, /* CMD_SET_VEHICLE_ON_TIME */
 	{CmdAutofillTimetable,                   0}, /* CMD_AUTOFILL_TIMETABLE */
+
+	{CmdOpenCloseAirport,                    0}, /* CMD_OPEN_CLOSE_AIRPORT */
 };
 
 /*!
Index: src/station_gui.h
===================================================================
--- src/station_gui.h	2008-05-18 18:51:44.000000000 +0200
+++ src/station_gui.h	2008-05-25 17:56:02.000000000 +0200
@@ -46,6 +46,7 @@
 	SVW_PLANES,          ///< List of scheduled planes button
 	SVW_SHIPS,           ///< List of scheduled ships button
 	SVW_RESIZE,          ///< Resize button
+	SVW_CLOSEAIRPORT,    ///< Close airport button
 };
 
 enum StationCoverageType {
Index: src/station_cmd.cpp
===================================================================
--- src/station_cmd.cpp	2008-05-24 04:54:47.000000000 +0200
+++ src/station_cmd.cpp	2008-05-25 18:00:25.000000000 +0200
@@ -1820,6 +1820,7 @@
 		UpdateStationAcceptance(st, false);
 		InvalidateWindowData(WC_STATION_LIST, st->owner, 0);
 		InvalidateWindowWidget(WC_STATION_VIEW, st->index, SVW_PLANES);
+		InvalidateWindowWidget(WC_STATION_VIEW, st->index, SVW_CLOSEAIRPORT);
 
 		if (_patches.station_noise_level) {
 			InvalidateWindow(WC_TOWN_VIEW, st->town->index);
@@ -1875,8 +1876,10 @@
 
 		st->airport_tile = 0;
 		st->facilities &= ~FACIL_AIRPORT;
+		st->airport_flags = 0;
 
 		InvalidateWindowWidget(WC_STATION_VIEW, st->index, SVW_PLANES);
+		InvalidateWindowWidget(WC_STATION_VIEW, st->index, SVW_CLOSEAIRPORT);
 
 		if (_patches.station_noise_level) {
 			InvalidateWindow(WC_TOWN_VIEW, st->town->index);
@@ -1889,6 +1892,32 @@
 	return cost;
 }
 
+/** Open/close an airport.
+ * @param tile unused
+ * @param flags type of operation
+ * @param p1 station ID of the airport
+ * @param p2 new status (0 open, 1 closed)
+ */
+CommandCost CmdOpenCloseAirport(TileIndex tile, uint32 flags, uint32 p1, uint32 p2)
+{
+	if (!IsValidStationID(p1)) return CMD_ERROR;
+	Station *st = GetStation(p1);
+
+	if (!(st->facilities & FACIL_AIRPORT)) return CMD_ERROR;
+	if (!CheckOwnership(st->owner)) return CMD_ERROR;
+
+	if (flags & DC_EXEC) {
+		if (p2) {
+			SETBITS(st->airport_flags, AIRPORT_CLOSED_block);
+		} else {
+			CLRBITS(st->airport_flags, AIRPORT_CLOSED_block);
+		}
+		InvalidateWindowWidget(WC_STATION_VIEW, st->index, SVW_CLOSEAIRPORT);
+	}
+
+	return CommandCost();
+}
+
 /** Build a buoy.
  * @param tile tile where to place the bouy
  * @param flags operation to perform
Index: src/station_gui.cpp
===================================================================
--- src/station_gui.cpp	2008-05-24 01:02:13.000000000 +0200
+++ src/station_gui.cpp	2008-05-25 18:31:17.000000000 +0200
@@ -638,14 +638,15 @@
 {      WWT_PANEL,     RESIZE_RB,    14,     0,   236,    14,    65, 0x0,               STR_NULL},                             // SVW_WAITING
 {  WWT_SCROLLBAR,    RESIZE_LRB,    14,   237,   248,    14,    65, 0x0,               STR_0190_SCROLL_BAR_SCROLLS_LIST},
 {      WWT_PANEL,    RESIZE_RTB,    14,     0,   248,    66,    97, 0x0,               STR_NULL},                             // SVW_ACCEPTLIST / SVW_RATINGLIST
-{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,    59,    98,   109, STR_00E4_LOCATION, STR_3053_CENTER_MAIN_VIEW_ON_STATION}, // SVW_LOCATION
-{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,    60,   120,    98,   109, STR_3032_RATINGS,  STR_3054_SHOW_STATION_RATINGS},        // SVW_RATINGS / SVW_ACCEPTS
-{ WWT_PUSHTXTBTN,    RESIZE_RTB,    14,   121,   180,    98,   109, STR_0130_RENAME,   STR_3055_CHANGE_NAME_OF_STATION},      // SVW_RENAME
-{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   181,   194,    98,   109, STR_TRAIN,         STR_SCHEDULED_TRAINS_TIP },            // SVW_TRAINS
-{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   195,   208,    98,   109, STR_LORRY,         STR_SCHEDULED_ROAD_VEHICLES_TIP },     // SVW_ROADVEHS
-{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   209,   222,    98,   109, STR_PLANE,         STR_SCHEDULED_AIRCRAFT_TIP },          // SVW_PLANES
-{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   223,   236,    98,   109, STR_SHIP,          STR_SCHEDULED_SHIPS_TIP },             // SVW_SHIPS
-{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   237,   248,    98,   109, 0x0,               STR_RESIZE_BUTTON},
+{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,     0,    59,   110,   121, STR_00E4_LOCATION, STR_3053_CENTER_MAIN_VIEW_ON_STATION}, // SVW_LOCATION
+{ WWT_PUSHTXTBTN,     RESIZE_TB,    14,    60,   120,   110,   121, STR_3032_RATINGS,  STR_3054_SHOW_STATION_RATINGS},        // SVW_RATINGS / SVW_ACCEPTS
+{ WWT_PUSHTXTBTN,    RESIZE_RTB,    14,   121,   180,   110,   121, STR_0130_RENAME,   STR_3055_CHANGE_NAME_OF_STATION},      // SVW_RENAME
+{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   181,   194,   110,   121, STR_TRAIN,         STR_SCHEDULED_TRAINS_TIP },            // SVW_TRAINS
+{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   195,   208,   110,   121, STR_LORRY,         STR_SCHEDULED_ROAD_VEHICLES_TIP },     // SVW_ROADVEHS
+{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   209,   222,   110,   121, STR_PLANE,         STR_SCHEDULED_AIRCRAFT_TIP },          // SVW_PLANES
+{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,   223,   236,   110,   121, STR_SHIP,          STR_SCHEDULED_SHIPS_TIP },             // SVW_SHIPS
+{  WWT_RESIZEBOX,   RESIZE_LRTB,    14,   237,   248,   110,   121, 0x0,               STR_RESIZE_BUTTON},
+{ WWT_PUSHTXTBTN,   RESIZE_LRTB,    14,     0,   248,    98,   109, STR_CLOSE_AIRPORT, STR_CLOSE_AIRPORT_TIP},                // SVW_CLOSEAIRPORT
 {   WIDGETS_END},
 };
 
@@ -783,6 +784,13 @@
 		this->SetWidgetDisabledState(SVW_ROADVEHS, !(st->facilities & FACIL_TRUCK_STOP) && !(st->facilities & FACIL_BUS_STOP));
 		this->SetWidgetDisabledState(SVW_PLANES,   !(st->facilities & FACIL_AIRPORT));
 		this->SetWidgetDisabledState(SVW_SHIPS,    !(st->facilities & FACIL_DOCK));
+		if (st->facilities & FACIL_AIRPORT) {
+			this->SetWidgetDisabledState(SVW_CLOSEAIRPORT, st->owner != _local_player);
+			this->SetWidgetLoweredState(SVW_CLOSEAIRPORT, HASBITS(st->airport_flags, AIRPORT_CLOSED_block));
+		} else {
+			this->DisableWidget(SVW_CLOSEAIRPORT);
+			this->RaiseWidget(SVW_CLOSEAIRPORT);
+		}
 
 		SetDParam(0, st->index);
 		SetDParam(1, st->facilities);
@@ -963,6 +971,12 @@
 				ShowVehicleListWindow(owner, VEH_SHIP, (StationID)this->window_number);
 				break;
 			}
+
+			case SVW_CLOSEAIRPORT: { // Open/close airport
+				const Station *st = GetStation(this->window_number);
+				DoCommandP(0, st->index, HASBITS(st->airport_flags, AIRPORT_CLOSED_block) ? 0 : 1, NULL, CMD_OPEN_CLOSE_AIRPORT | CMD_MSG(STR_CLOSE_AIRPORT_ERROR));
+				break;
+			}
 		}
 	}
 
@@ -984,7 +998,7 @@
 
 
 static const WindowDesc _station_view_desc = {
-	WDP_AUTO, WDP_AUTO, 249, 110, 249, 110,
+	WDP_AUTO, WDP_AUTO, 249, 122, 249, 122,
 	WC_STATION_VIEW, WC_NONE,
 	WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_DEF_WIDGET | WDF_UNCLICK_BUTTONS | WDF_STICKY_BUTTON | WDF_RESIZABLE,
 	_station_view_widgets,
Index: src/lang/english.txt
===================================================================
--- src/lang/english.txt	2008-05-24 04:54:47.000000000 +0200
+++ src/lang/english.txt	2008-05-25 18:32:00.000000000 +0200
@@ -3215,6 +3215,10 @@
 STR_SCHEDULED_AIRCRAFT_TIP                                      :{BLACK}Show all aircraft which have this station on their schedule
 STR_SCHEDULED_SHIPS_TIP                                         :{BLACK}Show all ships which have this station on their schedule
 
+STR_CLOSE_AIRPORT                                               :{BLACK}Close airport
+STR_CLOSE_AIRPORT_TIP                                           :{BLACK}Prevent aircraft from landing on this airport
+STR_CLOSE_AIRPORT_ERROR                                         :{WHITE}Cannot open/close airport...
+
 STR_VEH_WITH_SHARED_ORDERS_LIST                                 :{WHITE}Shared orders of {COMMA} Vehicle{P "" s}
 STR_VEH_WITH_SHARED_ORDERS_LIST_TIP                             :{BLACK}Show all vehicles that share this schedule