As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT IN BASE MAINTENANCE: EMERGENCY LIGHTS FAIL SYSTEM OPERATION TEST WITH FAULT MESSAGE EPSU EXT LOAD EMER L DISPLAYED - MAINTENANCE REPLACED LIGHT BULB CM 1810 ON THE LEFT AFT FAIRING AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK PER AMM 33-51-15