AFTER LANDING, THE AIRCRAFT WAS REFUELED. WHEN IT WAS IDENTIFIED AS BEING STOLEN, THE PILOT HURRIEDLY RETURNED TO THE PLANE, STARTED THE ENGINE, TAXIED TO THE RUNWAY, & MADE AN INTERSECTION TAKEOFF. AFTER TAKEOFF, THE AIRCRAFT WAS SEEN CLIMBING NORTH TOWARD MOUNTAINOUS TERRAIN. SUBSEQUENTLY, IT COLLIDED WITH A STEEP/WOODED SLOPE IN THE MOUNTAINS. NO PREIMPACT PART FAILURE OR MALFUNCTION OF THE AIRCRAFT WAS FOUND THAT WOULD HAVE RESULTED IN THE ACCIDENT. LOCAL PILOTS REPORTED THAT THE MOUNTAIN TOPS WERE OBSCURED BY WEATHER AT THE TIME OF THE ACCIDENT. TOXICOLOGY TESTS OF THE PILOT SHOWED ALCOHOL LEVELS OF 68 MG/DL (0.068%) IN HIS BLOOD, 89 MG/DL (0.089%) IN INVITREOUS FLUID, & 115 MG/DL (0.115%) IN HIS URINE, AND 0.147 UG/ML OF ALPRAZOLAM IN HIS BLOOD. THERE WAS EVIDENCE THAT THE PILOT'S SEAT BELT WAS NOT USED; HIS BODY WAS EJECTED FROM THE AIRPLANE DURING IMPACT.
The National Transportation Safety Board determines the probable cause(s) of this accident as follows:
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