THE CREW OF THE DEPARTING ATR-42, N242AT, HAD ACCEPTED AN INTERSECTION DEPARTURE, AND WAS HOLDING ON A STUB TAXIWAY WHEN THE FOLLOWING B-747, HZ-AIS, TRIED TO GET AROUND IT. THE LEFT WING OF THE B-747 CONTACTED THE VERTICAL STABILIZER AND RUDDER OF THE ATR-42. AT THE TIME OF THE ACCIDENT, THE CAPTAIN OF THE B-747 WAS MAKING AN ANNOUNCEMENT ON THE PUBLIC ADDRESS SYSTEM TO THE CABIN, AND AT THE SAME TIME ATTEMPTING TO MANEUVER THE AIRPLANE TO THE RIGHT TO AVOID THE ATR-42.