The pilot stated that he was conducting a skydiver “jump run”, and prior to letting the skydivers out the radio squelch interrupter failed causing a constant static noise. After letting the skydivers out over the airport the pilot set up the descent based on the winds acquired for the previous landing on runway 22. As he circled for landing the manifold pressure indication “dropped off” to zero.
The pilot was landing the twin-engine, turboprop airplane on a 3,000-foot-long, 70-foot-wide, asphalt runway, when he encountered a high sink rate. He applied engine power; however, the engines did not respond quickly enough to prevent a hard landing. During the hard landing, the main landing gear separated and the left landing gear struck the vertical stabilizer. The pilot subsequently performed a go-around and landed on a grass runway, without further incident. The pilot stated that he did not experience any mechanical malfunctions. He reported 5000 hours of total flight experience, which included 500 hours in the same make and model as the accident airplane.