As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: DURING LEFT AFT DOOR SLIDE CHANGE DUE TO TIME, MAINTENANCE DETERMINED THE NEW SLIDE WAS BAD FROM STOCK DUE TO IT WAS CAUSING MULTIPLE EMERGENCY LIGHT FAULTS TO DISPLAY DURING THE POST INSTALLATION OPERATIONAL TEST OF THE EMERGENCY LIGHTING SYSTEM. MAINTENANCE REPLACED THE DEFECTIVE SLIDE WITH A SEFVICEABLE UNIT.