"...Widebody was cleared for takeoff, and we [commuter twin] were cleared into position and hold. The Captain called for the controls unlocked and runway checklist. While on [taxiway] approaching the runway, just after the hold line, the jet blast hit the airplane. The Captain applied the brakes, however the jet blast lifted the right wing and the right main gear off the ground. The jet blast blew the aircraft into the blast fence at the approach end of Runway 31L." (ACN 145186)