What happened
The airplane impacted mountainous terrain while maintaining a near wings-level attitude during instrument meteorological conditions (IMC). Eyewitnesses observed the aircraft flying over their location and reported that the engine sounded normal at that time. There is no record indicating that the pilot obtained a weather briefing prior to departure.
The investigation
A thorough examination of the aircraft wreckage was conducted to determine the cause of the accident. Investigators found no evidence of mechanical failures or malfunctions with the aircraft systems prior to impact. Both propellers exhibited chordwise scratches and 'S' bending, consistent with the engine operating at high power at the time of impact.
Findings
The primary factors contributing to this accident were the pilot's failure to obtain a preflight weather briefing and the subsequent encounter with IMC in mountainous terrain. The absence of mechanical issues suggests the aircraft was airworthy prior to the collision.