3 files changed, 3 insertions, 17 deletions
diff --git a/src/ai/api/ai_airport.cpp b/src/ai/api/ai_airport.cpp
index b2b969b82..ed58701c3 100644
--- a/src/ai/api/ai_airport.cpp
+++ b/src/ai/api/ai_airport.cpp
@@ -11,7 +11,7 @@
 
 /* static */ bool AIAirport::IsValidAirportType(AirportType type)
 {
-	return type >= AT_SMALL && type <= AT_HELISTATION;
+	return type >= AT_SMALL && type <= AT_HELISTATION && HasBit(::GetValidAirports(), type);
 }
 
 /* static */ bool AIAirport::IsHangarTile(TileIndex tile)
@@ -28,13 +28,6 @@
 	return ::IsTileType(tile, MP_STATION) && ::IsAirport(tile);
 }
 
-/* static */ bool AIAirport::AirportAvailable(AirportType type)
-{
-	if (!IsValidAirportType(type)) return false;
-
-	return HasBit(::GetValidAirports(), type);
-}
-
 /* static */ int32 AIAirport::GetAirportWidth(AirportType type)
 {
 	if (!IsValidAirportType(type)) return -1;
diff --git a/src/ai/api/ai_airport.hpp b/src/ai/api/ai_airport.hpp
index 559d9c6ae..88d208043 100644
--- a/src/ai/api/ai_airport.hpp
+++ b/src/ai/api/ai_airport.hpp
@@ -47,9 +47,9 @@ public:
 	};
 
 	/**
-	 * Checks whether the given AirportType is valid.
+	 * Checks whether the given AirportType is valid and available.
 	 * @param type The AirportType to check.
-	 * @return True if and only if the AirportTypeis valid.
+	 * @return True if and only if the AirportType is valid and available.
 	 */
 	static bool IsValidAirportType(AirportType type);
 
@@ -70,12 +70,6 @@ public:
 	static bool IsAirportTile(TileIndex tile);
 
 	/**
-	 * Check if a certain airport type is already available.
-	 * @param type The type of airport to check.
-	 */
-	static bool AirportAvailable(AirportType type);
-
-	/**
 	 * Get the width of this type of airport.
 	 * @param type The type of airport.
 	 * @return The width in tiles.
diff --git a/src/ai/api/ai_airport.hpp.sq b/src/ai/api/ai_airport.hpp.sq
index f84412869..fdf8153b6 100644
--- a/src/ai/api/ai_airport.hpp.sq
+++ b/src/ai/api/ai_airport.hpp.sq
@@ -41,7 +41,6 @@ void SQAIAirport_Register(Squirrel *engine) {
 	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::IsValidAirportType,       "IsValidAirportType",       2, "?i");
 	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::IsHangarTile,             "IsHangarTile",             2, "?i");
 	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::IsAirportTile,            "IsAirportTile",            2, "?i");
-	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::AirportAvailable,         "AirportAvailable",         2, "?i");
 	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::GetAirportWidth,          "GetAirportWidth",          2, "?i");
 	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::GetAirportHeight,         "GetAirportHeight",         2, "?i");
 	SQAIAirport.DefSQStaticMethod(engine, &AIAirport::GetAirportCoverageRadius, "GetAirportCoverageRadius", 2, "?i");