Robert Kadera of Lake Villa and his 14-year-old son, Isaac, were standing outside the aircraft, a 1949 Piper Clipper, which was sitting in the middle of the golf course about 20 feet south of the retaining wall that separates the golf course from Route 22, police said.

Kadera said it was not an emergency landing, but rather, the boy was late for his tennis lesson at the Lincolnshire Club across the street from the golf course on Route 22, police said.

http://cbs2chicago.com/local/golf.course.plane.2.668950.html

Here’s a thought.  There is no degree of being late for tennis practice that would make it reasonable to land on a golf course.  Definite fail of common sense check.