Background
Approximately two hours before departure, the instrument-rated pilot accessed weather information through the Direct User Access Terminal Service (DUATS). The data obtained included surface observations, radar summaries, and terminal forecasts for areas along the intended route of flight. However, the pilot did not request or obtain in-flight weather advisories, which had been issued for instrument flight rules (IFR) conditions, mountain obscuration, icing, and turbulence along the same route.
Weather Conditions
Surface observations from airports along the intended route indicated that instrument meteorological conditions (IMC) prevailed at the time of the flight. Despite these conditions, the pilot departed on the night cross-country flight without filing a flight plan.
Accident Sequence
The airplane was reported missing after failing to arrive at its destination. Search efforts located the wreckage nine days later in mountainous terrain. The accident site was situated at an elevation of approximately 2,600 feet above mean sea level (MSL), while the surrounding mountain peak reached an elevation of about 3,211 feet MSL.
Wreckage Examination
Initial tree impact scars encompassed several trees and appeared level along the tops of the trees. The scars measured approximately 30 feet in width and became progressively lower and narrower in the direction of the wreckage. A thorough examination of the airplane and engine revealed no mechanical deficiencies.