N409TA

The airplane sustained substantial damage during a hard landing. The airplane was configured with full flaps and 80 knots on final. The pilot reported that the airplane was about 20 - 25 feet above the runway as it was "floating down the runway" and bleeding off airspeed. He reported, "Suddenly it seemed that the plane just dropped." The pilot reported the airplane ballooned so he added full throttle and aborted the landing. He returned to the departure airport and landed without incident. The inspection of the airplane revealed that the stall warning system operated. An avionics technician inspected the airspeed indicator and it indicated the correct airspeeds. The post accident inspection of the airplane revealed no preexisting anomalies that could be associated with a pre-impact condition.