As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SFO - FLT 177 - DURING DESCENT, EMERGENCY FLOOR LIGHTS THROUGHOUT CABIN ILLUMINATED AND EXTINGUISHED PRIOR TO LANDING. ACFT LANDED SFO WITHOUT INCIDENT. ACCOMPLISHED EMERGENCY FLOOR LIGHT SYSTEM CHECK AND POWER SUPPLY CHECK WITH NO DEFECTS FOUND. UNABLE TO DUPLICATE INCIDENT AND ACFT RETURNED TO SERVICE. (W)