Accident Overview
Following completion of a 14 CFR 135 pilot proficiency check, the pilot decided to perform additional landing practice. At the recommendation of the right-seat pilot, the pilot flew a tight, flaps-up pattern with a full forward slip. The landing runway, which had standing water on its surface, was 3,059 feet long.
Approach and Touchdown
The pilot's approach was high and at an excessive airspeed. Crossing the runway threshold, he stated 'We may be going around'; however, he then continued the approach to a 'firm' touchdown approximately halfway down the runway.
Landing Roll and Overrun
During the landing roll, the pilots stated that the aircraft hydroplaned. The aircraft overran the end of the runway by 'approximately 40 yards' onto a grass overrun.
Damage
After the event, the right elevator tip was found hanging from the elevator. Examinations conducted at the NTSB Materials Laboratory and by Cessna characterized the fractures as overstress separations. Photographs showed the top of the elevator spar buckled, the bottom of the spar fractured at a 45-degree angle, and upper elevator skin bent upward 90 degrees. Additionally, damage was observed to both main landing gear struts.