A Cal-Ore twin engine aircraft from Crescent City was heading to Oakland, California when the pilot declared an emergency due to smoke in the cockpit.
He said he would return to Crescent City, but contact was lost about 5 miles northeast of Arcata Airport.
The NTSB report details the conversation between pilot Larry Mills and the traffic controller, but does not provide any cause of the crash or new information.
To read the full preliminary report, click HERE.
The final report is still pending.