I work at VW/AUDI dealer. In the summertime I was replacing the "small" radiator fan nearly everyday on your vehicle.
When the fans are running, check to see which one is not spinning, guaranteed it is the small radiator fan. If so, replace it. There are extremely common.
Why you get the "airplane" noise is because the larger radiator fan is now working at double the speed to compensate for the other fan that is not moving.
Friday, December 23rd, 2011 AT 12:34 AM