public Airplane() {
	 wSeats=new String[TOTAL_WIN_SEATS];
	 aSeats=new String[TOTAL_AISLE_SEATS];
	 for(int i=0;i<wSeats.length;i++) {
		wSeats[i]=new String("NA");  
	 }
	 for(int i=0;i<wSeats.length;i++) {
		aSeats[i]=new String("NA");  
	 }
	}