Index: src/aircraft.h
===================================================================
--- src/aircraft.h	(revision 14290)
+++ src/aircraft.h	(working copy)
@@ -130,4 +130,11 @@
 	bool FindClosestDepot(TileIndex *location, DestinationID *destination, bool *reverse);
 };
 
+/**
+ * Clears the blocks created by the specified aircraft
+ * @note This have to be used when cleaning up aircraft to have its airport's blockings removed
+ * @param v Vehicle
+ */
+void AirportForceClearBlocks(const Vehicle *v);
+
 #endif /* AIRCRAFT_H */
Index: src/aircraft_cmd.cpp
===================================================================
--- src/aircraft_cmd.cpp	(revision 14290)
+++ src/aircraft_cmd.cpp	(working copy)
@@ -1770,6 +1770,15 @@
 	}
 }
 
+void AirportForceClearBlocks(const Vehicle *v)
+{
+	Station *st = GetStation(v->u.air.targetairport);
+	const AirportFTAClass *apc = st->Airport();
+
+	CLRBITS(st->airport_flags, apc->layout[v->u.air.previous_pos].block);
+	CLRBITS(st->airport_flags, apc->layout[v->u.air.pos].block);
+}
+
 static void AirportGoToNextPosition(Vehicle *v)
 {
 	/* if aircraft is not in position, wait until it is */
Index: src/vehicle.cpp
===================================================================
--- src/vehicle.cpp	(revision 14290)
+++ src/vehicle.cpp	(working copy)
@@ -694,6 +694,11 @@
 {
 	assert(v->First() == v);
 
+	if (v->type == VEH_AIRCRAFT)
+	{
+		AirportForceClearBlocks(v);
+	}
+
 	do {
 		Vehicle *u = v;
 		/* sometimes, eg. for disaster vehicles, when company bankrupts, when removing crashed/flooded vehicles,