On the second approach, the Apache touched down on taxiway W, parallel to and about 406 feet to the right (east) of runway 36L. At the same time, a Pan American Boeing B-727 was proceeding southbound on taxiway W. When the captain of the Pan-Am 727 saw the Apache emerge from the dense fog directly in front of him, he turned to the right (west) in an attempt to avoid the impending collision.