Incident Overview
While operating in conditions of outside air temperature 25 degrees below zero and heavy rain, the pilot reported that the elevator trim tab had become inoperative. While manually attempting to stabilize the aircraft during an instrument landing system approach, the airplane descended below the glideslope and collided with a 35-foot television antenna located 2 to 3 miles from the runway. The pilot then executed a missed approach and subsequently decided to proceed to the original alternate airport, Columbus.
Landing and Nose Gear Failure
On final approach to Columbus, tower personnel observed that the nose landing gear was not fully extended and notified the pilot. Both engines were feathered. Upon touchdown, the nose gear collapsed.
Investigation Findings
The investigation determined that the aircraft, registration N3DS, had been cleared for a DME/ILS approach to 7,000 feet, but no final approach clearance had ever been issued.