At 12:30 Pacific time, a Piper PA-28R-200 landed short of the approach end of runway 22 at the Catalina Island Airport, shearing off the right main gear and damaging the right wing. The three occupants were not injured. Steeply downsloping terrain surrounds the airport on three sides and the terrain at the approach end of runway 22 is very precipitous down to the ocean below. The pilot said the airplane was caught in a downdraft as he came over the cliff edge for landing. The airplane landed hard approximately 20 feet short of the approach end of the runway.