What was found
AIRCRAFT FAILED OPERATIONAL TEST OF EMERGENCY LIGHTS USING THE MCDU. EPSU SYSTEM TEST MESSAGE SLIDE LT/EPSU 18WL DOOR 4R. REPLACED DOOR SLIDE.
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
AIRCRAFT FAILED OPERATIONAL TEST OF EMERGENCY LIGHTS USING THE MCDU. EPSU SYSTEM TEST MESSAGE SLIDE LT/EPSU 18WL DOOR 4R. REPLACED DOOR SLIDE.