As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MIA-SFO - FLT 357 - DURING CRUISE, EMERGENCY FLOOR LIGHTS ILLUMINATED THROUGHOUT CABIN FOR APPROXIMATELY 3 MINUTES AND THEN EXTINGUISHED. ACFT PROCEEDED TO SFO WITH NO FURTHER ILLUMINATIONS. ACCOMPLISHED CHECK OF EMERGENCY FLOOR LIGHT SYSTEM WITH NO DEFECTS FOUND. UNABLE TO DUPLICATE PROBLEM. ACFT RETURNED TO SERVICE. (W)