--- a/src/airport.h	Tue Feb 13 11:29:20 2007 +0000
+++ b/src/airport.h	Tue Feb 13 12:34:54 2007 +0000
@@ -77,7 +77,7 @@
 
 /* Movement Blocks on Airports */
 // blocks (eg_airport_flags)
-enum {
+static const uint64
 	TERM1_block              = 1 <<  0,
 	TERM2_block              = 1 <<  1,
 	TERM3_block              = 1 <<  2,
@@ -119,8 +119,7 @@
 	OUT_WAY_block2           = 1 << 31,
 // end of new blocks
 
-	NOTHING_block            = 1 << 30
-};
+	NOTHING_block            = 1 << 30;
 
 typedef struct AirportMovingData {
 	int16 x;

--- a/src/airport_movement.h	Tue Feb 13 11:29:20 2007 +0000
+++ b/src/airport_movement.h	Tue Feb 13 12:34:54 2007 +0000
@@ -9,7 +9,7 @@
 typedef struct AirportFTAbuildup {
 	byte position; // the position that an airplane is at
 	byte heading;  // the current orders (eg. TAKEOFF, HANGAR, ENDLANDING, etc.)
-	uint32 block;  // the block this position is on on the airport (st->airport_flags)
+	uint64 block;  // the block this position is on on the airport (st->airport_flags)
 	byte next;     // next position from this position
 } AirportFTAbuildup;
 

--- a/src/saveload.cpp	Tue Feb 13 11:29:20 2007 +0000
+++ b/src/saveload.cpp	Tue Feb 13 12:34:54 2007 +0000
@@ -30,7 +30,7 @@
 #include "variables.h"
 #include <setjmp.h>
 
-extern const uint16 SAVEGAME_VERSION = 45;
+extern const uint16 SAVEGAME_VERSION = 46;
 uint16 _sl_version;       /// the major savegame version identifier
 byte   _sl_minor_version; /// the minor savegame version, DO NOT USE!
 

--- a/src/station.h	Tue Feb 13 11:29:20 2007 +0000
+++ b/src/station.h	Tue Feb 13 12:34:54 2007 +0000
@@ -139,8 +139,7 @@
 
 	Date build_date;
 
-	//uint16 airport_flags;
-	uint32 airport_flags;
+	uint64 airport_flags;   /// stores which blocks on the airport are taken. was 16 bit earlier on, then 32
 	StationID index;
 
 	byte last_vehicle_type;

--- a/src/station_cmd.cpp	Tue Feb 13 11:29:20 2007 +0000
+++ b/src/station_cmd.cpp	Tue Feb 13 12:34:54 2007 +0000
@@ -2855,8 +2855,9 @@
 	SLE_CONDNULL(2, 0, 5), // Truck/bus stop status
 	SLE_CONDNULL(1, 0, 4), // Blocked months
 
-	SLE_CONDVAR(Station, airport_flags,              SLE_VAR_U32 | SLE_FILE_U16,  0,  2),
-	SLE_CONDVAR(Station, airport_flags,              SLE_UINT32,                  3, SL_MAX_VERSION),
+	SLE_CONDVAR(Station, airport_flags,              SLE_VAR_U64 | SLE_FILE_U16,  0,  2),
+	SLE_CONDVAR(Station, airport_flags,              SLE_VAR_U64 | SLE_FILE_U32,  3, 45),
+	SLE_CONDVAR(Station, airport_flags,              SLE_UINT64,                 46, SL_MAX_VERSION),
 
 	SLE_CONDNULL(2, 0, 25), /* Ex last-vehicle */
 	SLE_CONDVAR(Station, last_vehicle_type,          SLE_UINT8,                  26, SL_MAX_VERSION),