As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PHX - EEL - DURING 4-DAY CHECK, FUNCTIONAL TEST OF EMERGENCY LIGHTING SYSTEM FOUND THE AFT SECTION EMERGENCY ESCAPE PATH LIGHTS INOPERATIVE. MAINTENANCE REMOVED AND REPLACED LT AFT EMERGENCY POWER SUPPLY UNIT (13WL), OPERATIONAL CHECK WAS GOOD.