Accident Overview
A pilot flying a single-engine airplane on a cross-country trip between Long Beach and Mammoth, California, collided with trees and terrain during a dark nighttime flight over high mountainous terrain. The accident occurred near a mountain campground at an approximate elevation of 7,300 feet above mean sea level.
Preflight and Weather
The pilot received four weather briefings prior to departure. The briefer informed the pilot of variable weather conditions, including mixed icing in clouds, mountain obscurement, and precipitation. At the accident site, witnesses estimated the ceiling to be about 200 feet above ground level, with snow falling.
Flight and Collision
No flight plan was filed for the flight. Witnesses near the campground heard the airplane approaching with its engine running before it collided with trees and terrain.
Pilot Background
The pilot's medical certificate had expired. The Federal Aviation Administration (FAA) had declined to issue the pilot another medical certificate because his diabetes was insufficiently controlled.