Ce-560XLS captain reported encountering wake turbulence on arrival into sfo in trail of a B737-800.

Attributes
ACN	1567901
Time
Date	201808
Place
Locale Reference	NCT.TRACON
State Reference	CA
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Citation Excel (C560XL)
Operating Under FAR Part	Part 135
Flight Phase	Initial Approach
Route In Use	Visual Approach
Flight Plan	IFR
Aircraft 2
Make Model Name	B737-800
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Person 1
Function	Pilot Flying Captain
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Inflight Event / Encounter Loss Of Aircraft Control Inflight Event / Encounter Wake Vortex Encounter

Narrative:

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.

Original NASA ASRS Text

Title: CE-560XLS Captain reported encountering wake turbulence on arrival into SFO in trail of a B737-800.

Narrative: 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.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.