As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TEST OF THE EMERGENCY LIGHTING SYSTEM, IT WAS DISCOVERED THAT THE TRACK LIGHTS IN FIRST CLASS EXTINGUISHED AFTER TOO SHORT A TIME PERIOD. THE POWER SUPPLY AT THE R-1 POSITION WAS REPLACED AND THE EMERGENCY LIGHTS TESTED NORMALLY.