As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT NOT GROUNDED: MAINTENANCE REPORTS OPERATIONAL TEST OF EMERGENCY LIGHTING SYSTEM AMM 33-51-00 FAILED EPSU SYSTEM TEST. MAINTENANCE ACCOMPLISHED INSTALLATION OF THE EMERGENCY POWER SUPPLY UNIT EPSU 13WL IAW AMM 33-51-38. OPS CHECK NORMAL.