As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED, DUIRNG DESCENT INTO SFO FLIGHT CREW REPORTED A FLIGHT CONTROL SLAT FAULT MESSAGE AND NO SLATS. THE AIRCRAFT LANDED SAFELY AT SFO WITHOUT FURTHER INCIDENT AND WAS TOWED TO THE GATE. MAINTENANCE FOUND THE LEFT WING #5 LEADING EDGE SLAT ACTUATOR 6037CM HAD FAILED AND REPLACED IT PER AMM 27-84-49. A SATISFACTORY OPERATIONAL CHECK WAS ACCOMPLISHED.