Aircraft	King Air 300 (BE30)
Airline	DenBeste Transportation, Inc (Part 91 owner/operator)
Name	Ryan O'Harren
Date	13 Dec 2008
Groundspeed	474 kts
Notes	Overhead AVE VOR (Central California) enroute from STS to BFL at FL250. Very strong jet stream of 140 knots associated with a cold front from Alaska