As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA - AFTER ARRIVAL OF FLT 577, CREW REPORTED THE EMERGENCY FLOOR TRACK LIGHTS ILLUMINATE INTERMITTENTLY DURING FLIGHT. ACCOMPLISHED OPERATIONAL CHECK OF EMERGENCY FLOOR TRACK LIGHTING SYSTEM, UNABLE TO DUPLICATE DISCREPANCY. PRECAUTIONARY REPLACED THE EMERGENCY LIGHTS CONTROL SWITCH S1-177 ON THE OVERHEAD PANEL IN THE FLIGHT COMPARTMENT AND OPERATED NORMALLY. (X)