Citation Excel (C560XL)
Flight Crew Air Transport Pilot (ATP); Flight Crew Instrument; Flight Crew Multiengine
Inflight Event / Encounter Loss Of Aircraft Control; Inflight Event / Encounter Wake Vortex Encounter
Air Traffic Control Issued New Clearance; Flight Crew Requested ATC Assistance / Clarification; Flight Crew Regained Aircraft Control; Flight Crew Took Evasive Action
Procedure; Environment - Non Weather Related
At 8000 feet on the Tipp Toe visual to 28L over the EDDYY intersection; autopilot on; no warning; air was smooth; plane rolled left approximately 60-90 degrees; slightly nose down; auto pilot kicked off. I disconnected the yaw damp and began the recovery immediately; rolling wings level and limiting altitude loss. Lost about 300 feet of altitude. Informed ATC of the wake turbulence encounter; Approach said we were 8 miles in trail of a 737-800. Approach gave us a vector turn to 330 for spacing. We checked with passengers (to include two little girls in car seats) and all passengers were fine; seated; and buckled in. Seat belt sign was on at 10000 feet.
CE-560XLS Captain reported encountering wake turbulence on arrival into SFO in trail of a B737-800.