Circumstances
The aircraft crashed into trees during an approach to land after sunset. The crash site was located approximately 2 miles from the airport. The aircraft came to rest inverted about 100 feet from the first point of impact with trees.
Pilot Statement
The pilot stated that he was descending from 10,500 feet through 5,000 feet with the airport in sight, as well as the lights of Sacramento, California. He does not remember the accident itself, but he recalled that his wife was asleep and that the dog in the back tried to get up front, which he later thought was unusual. The flight lasted one hour, and the heater was on during the flight.
Post-Accident Examination
Tests for carbon monoxide (CO) conducted days after the accident were inconclusive. A post-accident examination of the aircraft's exhaust system showed no malfunction.